硕士研究生入学考试试题.doc
m <0m >0, p K 应是 1p <，且随温度升高而增大 1p <，且随温度升高而减小1p K >，且随度升高而增大1p >，且随温度升高而减小℃下A 、B 两种气体在同一溶剂中的亨利常数分别为k A 气体的蒸汽压相同时，溶液中 22
k k C - 1,1,A A
k k k B -−−
C . 1,2A
k
A B −−→, 2k B C D +−−→ D . 1,2
1,22A A
k k k A
B C -−−→
8.在统计热力学中，根据粒子间的相互作用可否忽略将统计系统分为 和 系统，根据粒子的运动特点将统计系统分为 和 系统，非理想气体 是 子系统。
9.理想气体反应PCl 5 (g) ＝ PCl 3 (g)＋Cl 2 (g) 的187.9r m H kJ mol -∆=,,()0B p m B
C B ν≈∑,要提高
PCl 5 (g)的解离度，可采取的措施是 。
A .降温
B . 加压
C . 降温和加压
D .升温和减压 10．对独立子系统，在各种运动形式的配分函数中，与压力有关的是 。
A. 平动配分函数
B.转动配分函数 C . 振动配分函数 D.电子配分函数
二．(20分)
101 kPa 下，将1g 、0℃的冰投入到10g 沸水中，冰立即熔化。
计算该过程的Q 、W 、ΔU 、ΔH 、ΔS ，并说明此过程为自发自发过程。
已知在此条件下，冰的熔化焓为6025J·mol －1 ，水的平均等压摩尔热容为75.29J ·mol -1·K －1
, 水的摩尔质量为18.01g ·mol -1。
三．(20分)
NH 4Cl(s)受热分解：
NH 4Cl(s) ＝ NH 3 （g ） + HCl(g)
实验测得加热NH 4Cl(s)至700K 和732K 时，其蒸气压分别为607.94 kPa 和1114.56 kPa 。
（1）计算上述两温度下NH 4Cl(s)分解反应的标准平衡常数。
（2）假设NH 4Cl(s)分解反应的△r C P ，m ≈ 0 , 计算NH 4Cl(s)分解反应的r m H ∆和r m S ∆。
（3）300K 下，30.001NH HCl p p kPa ==， 能否生成NH 4Cl(s) ? 说明理由。
.四． (22分)
A 与
B 二组分液态完全互溶，固态完全不互溶，
其低共溶混合物中B 的质量分数为60%，101.3kPa 下A-B 二组分相图如右图所示。
（1）指出相图中1、2、3 区 及E 点的相及自 由度；
（2）画出图上a 点所示系统的步冷曲，并说明 各转折点的相态变化。
(3) 冷却B 的质量分数为40%的A-B 二组分液
t /℃
1
2)kg H -|2(Pb
, 2(PbCl s 1
kg -，计算298 K 下该电池的电动势及电池反应的摩尔吉布斯函数变。
1） 苯的正常沸点为80.1℃，摩尔气化焓33.9m = m -3。
若。
全国硕士研究生入学考试政治试题及答案
全国硕士研究生入学考试政治试题及答案考试科目：政治考试时间：120分钟试题总分：150分考试类型：选择题、判断题第一部分：选择题（共100分）请根据题意选择最佳答案，并将其填写在答题卡上。
1. 下列哪个是中国共产党的最高纲领？A. 马克思主义基本原理B. 发展生产力C. 建设中国特色社会主义D. 党的总路线2. 全面建设社会主义现代化国家的目标是在什么基础上实现的？A. 全体人民自力更生B. 中国特色社会主义制度C. 民主政治制度D. 公有制经济3. 社会主义初级阶段的基本经济制度是什么？A. 公有制经济为主体B. 混合所有制经济C. 计划经济D. 市场经济4. 我国国家机关的性质是什么？A. 人民的工具B. 人民的服务者C. 资本主义D. 官僚主义5. 阶级斗争是马克思主义的核心观点之一，它的根本目的是什么？A. 保持社会稳定B. 实现社会平等C. 推动社会发展D. 实现无阶级社会......第二部分：判断题（共50分）请根据题意选择“正确”或“错误”，并将其填写在答题卡上。
1. 中国特色社会主义必须坚持党的领导，坚持以人为本，坚持经济持续发展，坚持改革开放，坚持科学发展观。
（）2. 中国共产党是中国工人阶级的先锋队，同时也是中国一切劳动者的先锋队。
（）3. 我国国家机关的任务是为人民服务，为人民维权。
（）4. 政治素质是指一个人具备政治觉悟、政治能力和运用政治方法处理社会问题的能力。
（）5. 中国特色社会主义制度是我国的根本制度，不可动摇。
（）......答案解析：第一部分：选择题1. A2. B3. A4. B5. C......第二部分：判断题1. 正确2. 正确3. 正确4. 正确5. 正确......注意：以上答案仅供参考，具体以考试或教师要求为准。
希望以上考试题目及答案能够帮助您更好地准备全国硕士研究生入学考试政治科目。
祝您考试顺利！。
2023年硕士研究生统一入学考试自命题试题4
35.水平肌链由口轮匝肌、颊肌和翼内肌构成（ ）
36.下颌边缘运动代表了下颌、颞下颌关节及其韧带和咀嚼肌旳功能潜能。（ ）
37.在ICP时, 下颌位置都居于正中, 不偏左不偏右（ ）
38.颈鞘位于颈交感干旳后方浅面（ ）
39.根管为位于牙根内旳大部分髓腔, 一般一种牙根内不一定只有一种根管（ ）
全国硕士硕士统一入学考试自命题试题
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学科与专业名称: 口腔基础医学 口腔临床医学 口腔医学（专业学位）
考试科目代码与名称: 352 口腔综合
二、判断题（你认为对旳, 用T表达, 错误旳用F表达。共50小题, 每题1分, 共50分）
1.根管长度电测量法旳原理是根据牙周膜与口腔黏膜简朴电阻恒定为, 设计出第一代旳根测仪牙周膜旳电阻值为40微安（ ）
2.弯曲根管旳器械制备原则是尽量将根管扩直（ ）
3.牙根尖形成术实际上是活髓疗法, 牙根尖成形术是对死髓旳年轻恒牙旳治疗（ ）
12.简述拔牙创骨组织修复重建过程？
13.试述颞下颌关节基本构成和形态特性？
14.请解释三个基本颌位及其三者旳关系？
15.描述上颌骨旳三大支柱以及支架构造？
16.何为面部旳危险三角区及其临床意义？
17.口腔黏膜旳非角质形成细胞有哪些？ 各有什么功能？
18.从病理学和生物学角度鉴别多形性腺瘤和腺淋巴瘤？
22.三角挺重要提供旳力是楔力（ ）
23.颞深间隙感染最轻易并发骨髓炎（ ）
24.临床创口分为无菌创口、污染创口、感染创口（ ）
2020年全国硕士研究生入学统一考试数学二试题完整版附答案分析及详解
x (0, 0)
xy (0, 0)
(x, y)→( 0,0 )
y→0 x→0
数是
A.4 B.3 C.2 D.1
答案：B
6. 设函数 f (x) 在区间 − 2,2上可导，且 f (x) f (x) 0 ，则（）
A f (−2) 1 f (−1)
B f (0) e C f (1) e2 D f (2) e3
3.
1
0
arcsin
x (1−xx)源自dx=π2
A.
4
π2
B.
8
C. π
D. π
4
8
答案： A
解析： 1 arcsin xdx = arcsin2
0 x(1− x)
x
1 0
2 =
4
.
4. f ( x) = x2 ln (1− x), n 3 时， f (n) (0) =
A. − n! n−2
答案： A
+
y(x)dx =
0
解析：由
y + 2y + y = 0
y
(0)
=0，y
(
0)
y))dy
dz
(0, )
=
(
−1)dx − dy
12.斜边长为 2a 等腰直角三角形平板铅直地沉没在水中，且斜边与水面相齐，设重力加速度 为 g，水密度为 ，则该平板一侧所受的水压力为
答案： 1 ega3 3
解析： a g(a − y)[ y − (− y)]dy = 1 ga3
0
3
13.设 y = y ( x) 满足 y + 2y + y = 0 ，且 y (0) =0，y(0) =1，则
全国硕士学位研究生入学统一考试英语试题1-4答案
medals would be a pie in the sky. What’s more, the
international exchanges has brought about the growth of
Li Ming
(126 words)
52. 参考范文
As is vividly betrayed in the chart above, the number of gold
medals which are snatched by P.R. China has been climbing and
growth of Chinese sports. The Opening-up and Reform since 1978
has improved the development of economy in China, which has
laid a solid foundation for the development of sports in
university to make contribution to the development of my
hometown, which is still one of the ten counties in poverty.
Best wishes to you!
Sincerely Yours
Section Ⅰ Use of English
1. B
2. B
3. C
4. D
5. C
2021 年全国硕士研究生入学统一考试英语(二)试题真题(打印版)
2021 年全国硕士研究生入学统一考试英语(二)试题Section I Use of EnglishDirections:Read the following text.Choose the best word(s) for each numberedblank and mark A,B, C or D on ANSWER SHEET 1. (10 points)Section Reading ComprehensionPart ADirections:Read the following four texts.Answer the questions below each textby choosing A, B, C, or D. Mark your answers on ANSWER SHEET 1.(40 points)Reskilling is something that sounds like a buzzword but is actually arequirement if we plan to have a future where a lot of would-beworkers do not get left behind.. We know we are moving into a period where the jobs in demandwill change rapidly, as will the requirements of the jobs that remain.Research by the WEF detailed in the Harvard Business Review, findsthat on average 42 per cent of the core skills " within job roles willchange by 2022. That is a very short timeline, so we can onlyimagine what the changes will be further in the future.The question of who should pay for reskilling is a thorny one Forindividual companies, the temptation is always to let go of workerswhose skills are no longer demand and replace them with thosewhose skills are.That does not always happen.AT&T is often given asthe gold standard of a company who decided to do a massivereskilling program rather than go with a fire-and-hire strategy.ultimatelyretraining 18,000employees. Prepandemic,othercompanies including Amazon and Disney had also pledged to createtheir own plans. When the skills mismatch is in the broader economythough, the focus usually turns to government to handle. Efforts inCanada and elsewhere have been arguably languid at best, and havegiven us a situation where we frequently hear of employers beggingfor workers even at times and In regionswhere unemployment is high.With the pandemic, unemployment is veryhigh indeed. In February,at 3.5 per cent and 5.5 per cent respectively,unemployment rates inCanada and the United States were at generational lows and workershortages were everywhere.As of May, those rates had spiked up to13.3 per cent and 13.7 per cent, and although many worker shortageshad disappeared, not all had done so. In the medical field, to take anobvious example,the pandemic meant that there were still clearshortages of doctors, nurses and other medical personnelOf course, it is not like you can take an unemployed waiter andtrain him to be a doctor in a few weeks, no matter who pays for it.Buteven if you cannot close that gap, maybe you can close others, anddoing so would be to the benefit of all concerned That seems to bethe case in Sweden, where the pandemickick-started a retrainingprogram where business as well as government had a role.Reskiling in this way would be challenging in a North Americancontext. You can easily imagine a chorus of"you cant do that,"because teachers or nurses or whoever have special skills, and usingany support staff who has been quickly trained is bound to end indisaster. Maybe. Or maybe it is something that can work 'ell inSweden,with its history of co-operation between business,labourand government, but not in North Americawhere our history is verydifferent. Then again, maybe it is akin to wartime, when extraordinarythings take place, but it is business as usualafter the fact.And yet, asin war the pandemic is teaching us that many things, including rapidreskilling, can be done if there is a will to do them. In any case,Swedens work force is now more skilled, in more things,and moreflexible than it was before.Of course, reskilling programs, whether for pandemic needs or thepostpandemic world,are expensive and at a time when everyonesbudgets are lean this may not be the time to implement them.Thenagain,extending income support programs to get us through thenext months is expensive, too, to say nothing of the cost of having aswath of long-term unemployed in thePOST-COVID years Given that,perhaps we should think hard about whether the pandemic canjump-start us to a place where reskilling becomes much more than abuzzword.B.PreDaacancies for the unemplovo teau.e1C. Retrain their cabin staff for better servicesD.finance their staff' s college educationText 2When Microsoft bought task managennent app Wunderlist andmobile calendar Sunrise in 2015, it pickecup two newcomers thatwere attracting considerable buzz in Silicon Valley. Microsoft' s ownOffice dominates the market for"productivity"software, but thestart-ups represented a new wave of technology designed from theground up for the smartphone world.Both apps, however, were later scrapped, after Microsoft said it hadused their best features in its own productsTheir teams of engineersstayed on, making them two of the many" acqui-hires"that thebiggest companies have used to feed their insatiable hunger for techtalent.To Microsoft’ s critics,the fates of Wunderlist and Sunrise areexamples of a remorseless drive by Big Tech to chew up anyinnovative companies that lie in their path. " They bought theseedlings and closed them down,"complained Paul Arnold, a partnerat San Francisco-based Switch Ventures, putting paid to businessesthat might one day turn into competitors. Microsoft declined tccomment.Like other start-up investors,Mr Arnold ' s own business oftendepends on selling start-ups to larger tech companies,though headmits to mixed feelings about the result:"I think these things aregood for me, if I put my selfish hat on. But are they good for theAmerican economy? I don' t know.”The US Federal Trade Commission says it wants to find the answerto that question. This week, it asked the five most valuable US techcompanies for information about their many smallacquisitions ovelthe past decade. Although only a research project at this stage, therequest has raised the prospect of regulators wading into early-stagetech markets that until now have been beyond their reach.Given their combined market value of more than $5.5tn,riflingthrough such small deals —many of them much less prominent thanwunderlist and Sunrise —might seem beside the point. Betweenthem,the five companies (Apple，Microsoft,Google，Amazon andFacebook) have spent an average of only $3.4bn a year on sub-$1bnacquisitions over the past five years a drop in the ocean compared with their massive financial reserves, and the more than$130bn of venture capital that was invested in the US last year.However, critics say that the big companies use such deals to buytheir most threatening potential competitcrs before their businesseshave a chance to gain momentum, in some cases as part of a"buyand kill" tactic to simply close them down31. What is true about Wuderlist and sunrise after their acquisitionsA.Their market values declined.B. Their tech features improvedC. Their engineers were retainedD. Their products werere-priced.32. Microsoft's critics believe that the big tech companies tend toA. ignore public opinionsB.treat new tech talent unfairlyC.exaggerate their product qualityD.eliminate their potential competitors.33. Paul Arnold is concerned that small acquisitions miahtA. harm the national economyB. worsen market competitionC. discourage start-up investorsD.weaken big tech companies.34. The US Federal Trade Commission intend toA. examine small acquisitionsB. limit Big Tech'’ s expansionC. supervise start-ups’operationsD.encourage research collaboration35. For the five biggest tech companies, their small acquisition haveA. brought little financial pressureB. raised few management challengesC.set an example for future dealsD. generated considerable profitsText 4we're fairly good at judging people based on first impressions,thin slices of experience ranging from a glimpse of a photo to afive-minute interaction, and deliberation can be not only extraneousbut intrusive. In one study of the ability she dubbed"thin slicing,"the late psychologist Nalini Ambady asked participants to watchsilent 10-second video clips of professors and to rate the instructor's overall effectiveness. Their ratings correlated strongly withstudents’ end-of-semester ratings.Another set of participants had tccount backward from 1,000 by nines as they watched the clips,occupying their conratings were just asaccurate, demonstrie social processing.Critically, anotherninute writing downreasons for their Jjudgment,betore giving the rating. Accuracydropped dramatically. Ambady suspected that deliberation focusedthem on vivid but misleading cues,such as certain gestures orutterances, rather than letting the complex interplay of subtle signalsform a holistic impression. She found similar interference whenparticipants watched 15-second clips of pairs of people and judgedwhether they were strangers, friends, or dating partners.Other research shows we' re better at detecting deception andsexual orientation from thin slices when we rely on intuition insteadof reflection.“It' s as if you' re driving a stick shift," says Judith Hall,a psychologist at Northeastern University,"and if you start thinkingabout it too much, you can' t remember what you’ re doing. But if yougo on automatic pilot, you' re fine. Much of our social life is like that."Thinking too much can also harm our ability to form preferencesCollege students' ratings of strawberry jams and college coursesaligned better with experts' opinions when the students weren'tasked to analyze their rationale. And peoplemadecar-buyingdecisions that were both objectively better and more personallysatisfying when asked to focus on their feelings rather than on details,but only if the decision was complex — when they had a lot o1information to process.Intuition ' s special powers are unleashed only in certaincircumstances. In one study, participants completed a battery of eighttasks, including four that tapped reflective thinking (discerning rules,comprehending vocabulary) and four that tapped intuition andcreativity (generating new products or figures of speech).Then theyrated the degree to which they had used intuition ( "gut feelings,""hunches,"“my heart”). Use of their gut hurt their performance onthe first four tasks,as expected, and helped them on the restSometimes the heart is smarter than the head.36. Nalini Ambabys study deals with_A. instructor student interactionB.the power of people's memoryC. the reliability of first impressionsD.People’s ability to influence others37. In Ambaby ' s study,rating accuracydropped whenparticipants_A. gave the rating in limited timeB. focused on specific detailsC. watched shorter video clipsD. discussed with on another38.Judith Hall mentions driving to mention that_A. memory can be selectiveB.reflection can be distractingC. social skills must be cultivatedD. deception is difficult to detect39. When you are making complex decisions, it is advisable to_A. follow your feelingsB. list your preferencesc. seek expert adviceD.collect enough data40.(缺)Directions:In the following article, some sentences have been removed. FotQuestions 41—45, choose the most suitable one from the list A—G tcfit into each of the numbered blanks.There are two extra choiceswhich do not fit in any of the blanks. Mark your answers on ANSWERSHEET 1.(10 points)A. Stay calmB. Stay humbleC. Don’t make judgmentsD.Be realistic about the risksE. Decide whether to waitF.Ask permission to disagreeG. Identify a shared goalHow to Disagree with Someone More Powerful than YouYour boss proposes a new initiative you think won' t work.Youlsenior colleague outlines a project timeline you think is unrealistic.What do you say when you disagree with someone who has morepower than you do? How do you decide whether it’s worth speakingup? And if you do, what exactly should you say? Here' s how tcdisagree with someone more powerful than you.41.You may decide it' s best to hold off on voicing your opinion.Maybe you haven’t finished thinking the problem through, the wholediscussion was a surprise to you, or you want to get a clearer sense oiwhat the group thinks. If you think other people are going to disagree too, you might want to gather your army first. People can contributeexperience or information to your thinking—all the things that wouldmake the disagreement stronger or more valid. It's also a good ideato delay the conversation if you' re in a meeting or other public space.Discussing the issue in private will make the powerful person feel lessthreatened.42.Before you share your thoughts,think about what the powerfulperson cares aboutit may be "the credibility of their team orgetting a project done on time. You' re more likely to be heard if youcan connect your disagreement to a higher purpose.When you dospeak up, don' t assume the link will be clear. You’ ll want to state itovertly, contextualizing your statements so that you' re seen not as adisagreeable underling but as a colleague whos trying to advance ashared goal. The discussion will then become more like a chess gamethan a boxing match.43.This step may sound overly deferential, but it' s a smart way to givethe powerful person psychological safety and control. You can saysomething like,“I know we seem to be moving toward a first-quartercommitment here.I have reasons to think that won' t work.T d like to lay out my reasoning. Would that be OK?"This gives the person achoice,allowing them to verbally opt in.And, assuming they say yes.it willmake, you feel more confidentabout voicing yourdisagreement.44._You might feel your heart racing or your face turning red, but dcwhatever you can to remain neutral in both your words and actions,When your body language communicates reluctance or anxiety,itundercuts the message. Itsends a mixed message, and yourcounterpart gets to choose what to read. Deep breaths can help, ascan speaking more slowly and deliberately. When we feel panicky wetend to talk louder and faster. Simply slowing the pace and talking inan even tone helps the other person calm down and does the samefor you. It also makes you seem confident, even if you aren't.45._Emphasize that you're offering your opinion, not gospel truth. Itmay be a well-informed, well-researched opinion, but it' s still anopinion, my talk tentatively and slightly understate your confidence.Instead of saying something like, " If we set an end-of-quarterdeadline, we'll never make it,:" say,“This is just my opinion, but ldon't see how we will make that deadline." Having asserted yourposition(as a position，not as a fact) demonstrate equal curiosityabout other views.Remind the person that this is your point of view,and then invite critique. Be open to hearing other opinions.Part CDirections:Translate the following text into Chinese. Write your translation onthe ANSWER SHEET. (10 points)We tend to think that friends and family members are our biggestsource of connection, laughter and warmth . While that may well betrue, researchers have also recently found that interacting withstrangers actually brings a boost in mood and feelings of belongingthat we didn't expect.In one series of studies,researchers instructed Chicago- areacommuters using publictransportation to strike up a conversationwith someone near them. On average,participants who followed thisinstruction felt better than those who had been told to stand or sit insilence.The researchers also argued that when we shy away fromcasual interactions with strangers,It is often due to a misplacedanxiety that they might not want to talk to us. Much of the time,however, this belief is false . As it tums outmany people are actuallyperfectly wiling to talk- and may even beflattered to receive yourattention .Section m WritinPart A51. Directions:Suppose you are organising an online meeting. Write an email to Jackan international student.(1) invite him to participate,and(2) tell him the detailsYou should write neatly on ANSWER SHEET 2.Do not sign your own name at the end of the e-mail. Use " LiMing"instead.Do not write the address. (10 points)Part B52.Directions:Write an essay based on chart below. In your writing,you should(1) interpret the chart,and(2) give your commentsYou should write about 150words on theANSWERhave a chance to gain momentum, in some cases as part of a"buyand kill" tactic to simply close them down31. What is true about Wuderlist and sunrise after their acquisitionsA.Their market values declined.B. Their tech features improvedC. Their engineers were retainedD. Their products werere-priced.32. Microsoft's critics believe that the big tech companies tend toA. ignore public opinionsB.treat new tech talent unfairlyC.exaggerate their product qualityD.eliminate their potential competitors.33. Paul Arnold is concerned that small acquisitions miahtA. harm the national economyB. worsen market competitionC. discourage start-up investorsD.weaken big tech companies.34. The US Federal Trade Commission intend toA. examine small acquisitionsB. limit Big Tech'’ s expansionC. supervise start-ups’operationsD.encourage research collaboration35. For the five biggest tech companies, their small acquisition haveA. brought little financial pressureB. raised few management challengesC.set an example for future dealsD. generated considerable profitsText 4we're fairly good at judging people based on first impressions,thin slices of experience ranging from a glimpse of a photo to afive-minute interaction, and deliberation can be not only extraneousbut intrusive. In one study of the ability she dubbed"thin slicing,"the late psychologist Nalini Ambady asked participants to watchsilent 10-second video clips of professors and to rate the instructor's overall effectiveness. Their ratings correlated strongly withstudents’ end-of-semester ratings.Another set of participants had tccount backward from 1,000 by nines as they watched the clips,occupying their conratings were just asaccurate, demonstrie social processing.Critically, anotherninute writing downreasons for their Jjudgment,betore giving the rating. Accuracydropped dramatically. Ambady suspected that deliberation focusedthem on vivid but misleading cues,such as certain gestures orutterances, rather than letting the complex interplay of subtle signalsform a holistic impression. She found similar interference whenparticipants watched 15-second clips of pairs of people and judgedwhether they were strangers, friends, or dating partners.Other research shows we' re better at detecting deception andsexual orientation from thin slices when we rely on intuition insteadof reflection.“It' s as if you' re driving a stick shift," says Judith Hall,a psychologist at Northeastern University,"and if you start thinkingabout it too much, you can' t remember what you’ re doing. But if yougo on automatic pilot, you' re fine. Much of our social life is like that."Thinking too much can also harm our ability to form preferencesCollege students' ratings of strawberry jams and college coursesaligned better with experts' opinions when the students weren'tasked to analyze their rationale. And people madecar-buyingdecisions that were both objectively better and more personallysatisfying when asked to focus on their feelings rather than on details,but only if the decision was complex — when they had a lot o1information to process.Intuition ' s special powers are unleashed only in certaincircumstances. In one study, participants completed a battery of eighttasks, including four that tapped reflective thinking (discerning rules,comprehending vocabulary) and four that tapped intuition andcreativity (generating new products or figures of speech).Then theyrated the degree to which they had used intuition ( "gut feelings,""hunches,"“my heart”). Use of their gut hurt their performance onthe first four tasks,as expected, and helped them on the restSometimes the heart is smarter than the head.36. Nalini Ambabys study deals with_A. instructor student interactionB.the power of people's memoryC. the reliability of first impressionsD.People’s ability to influence others37. In Ambaby ' s study,rating accuracydropped whenparticipants_A. gave the rating in limited timeB. focused on specific detailsC. watched shorter video clipsD. discussed with on another38.Judith Hall mentions driving to mention that_A. memory can be selectiveB.reflection can be distractingC. social skills must be cultivatedD. deception is difficult to detect39. When you are making complex decisions, it is advisable to_A. follow your feelingsB. list your preferencesc. seek expert adviceD.collect enough data40.(缺)Directions:In the following article, some sentences have been removed. FotQuestions 41—45, choose the most suitable one from the list A—G tcfit into each of the numbered blanks.There are two extra choiceswhich do not fit in any of the blanks. Mark your answers on ANSWERSHEET 1.(10 points)A. Stay calmB. Stay humbleC. Don’t make judgmentsD.Be realistic about the risksE. Decide whether to waitF.Ask permission to disagreeG. Identify a shared goalHow to Disagree with Someone More Powerful than YouYour boss proposes a new initiative you think won' t work.Youlsenior colleague outlines a project timeline you think is unrealistic.What do you say when you disagree with someone who has morepower than you do? How do you decide whether it’s worth speakingup? And if you do, what exactly should you say? Here' s how tcdisagree with someone more powerful than you.41.You may decide it' s best to hold off on voicing your opinion.Maybe you haven’t finished thinking the problem through, the wholediscussion was a surprise to you, or you want to get a clearer sense oiwhat the group thinks. If you think other people are going to disagree too, you might want to gather your army first. People can contributeexperience or information to your thinking—all the things that wouldmake the disagreement stronger or more valid. It's also a good ideato delay the conversation if you' re in a meeting or other public space.Discussing the issue in private will make the powerful person feel lessthreatened.42.Before you share your thoughts,think about what the powerfulperson cares aboutit may be "the credibility of their team orgetting a project done on time. You' re more likely to be heard if youcan connect your disagreement to a higher purpose.When you dospeak up, don' t assume the link will be clear. You’ ll want to state itovertly, contextualizing your statements so that you' re seen not as adisagreeable underling but as a colleague whos trying to advance ashared goal. The discussion will then become more like a chess gamethan a boxing match.43.This step may sound overly deferential, but it' s a smart way to givethe powerful person psychological safety and control. You can saysomething like,“I know we seem to be moving toward a first-quartercommitment here.I have reasons to think that won' t work.T d like to lay out my reasoning. Would that be OK?"This gives the person achoice,allowing them to verbally opt in.And, assuming they say yes.it willmake, you feel more confidentabout voicing yourdisagreement.44._You might feel your heart racing or your face turning red, but dcwhatever you can to remain neutral in both your words and actions,When your body language communicates reluctance or anxiety,itundercuts the message. Itsends a mixed message, and yourcounterpart gets to choose what to read. Deep breaths can help, ascan speaking more slowly and deliberately. When we feel panicky wetend to talk louder and faster. Simply slowing the pace and talking inan even tone helps the other person calm down and does the samefor you. It also makes you seem confident, even if you aren't.45._Emphasize that you're offering your opinion, not gospel truth. Itmay be a well-informed, well-researched opinion, but it' s still anopinion, my talk tentatively and slightly understate your confidence.Instead of saying something like, " If we set an end-of-quarterdeadline, we'll never make it,:" say,“This is just my opinion, but ldon't see how we will make that deadline." Havingasserted yourposition(as a position，not as a fact) demonstrate equal curiosityabout other views.Remind the person that this is your point of view,and then invite critique. Be open to hearing other opinions.Part CDirections:Translate the following text into Chinese. Write your translation onthe ANSWER SHEET. (10 points)We tend to think that friends and family members are our biggestsource of connection, laughter and warmth . While that may well betrue, researchers have also recently found that interacting withstrangers actually brings a boost in mood and feelings of belongingthat we didn't expect.In one series of studies,researchers instructed Chicago- areacommuters using public transportation to strike up a conversationwith someone near them. On average,participants who followed thisinstruction felt better than those who had been told to stand or sit insilence.The researchers also argued that when we shy away fromcasual interactions with strangers,It is often due to a misplacedanxiety that they might not want to talk to us. Much of the time,however, this belief is false . As it tums outmany people are actuallyperfectly wiling to talk- and may even beflattered to receive yourattention .Section m WritinPart A51.Directions:Suppose you are organising an online meeting. Write an email to Jackan international student.(1)invite him to participate,and(2) tell him the detailsYou should write neatly on ANSWER SHEET 2.Do not sign your own name at the end of the e-mail. Use " LiMing"instead.Do not write the address. (10 points)Part B52.Directions:Write an essay based on chart below. In your writing,you should(1) interpret the chart,and (2)give your commentsYou should write about 150words on theANSWERSHEET.(15points)60.0%,50.0% ,4.0%s30.0N)23.9%20.ogsy,10.0gy .px.hep.0.0%。
硕士研究生入学考试生物化学试题及答案
硕士研究生入学考试生物化学试题（A）一、选择题（选择1个正确答案，每题1分，共15分。
）1. 下列叙述中哪一个是正确的？（）A.线粒体内膜对H+离子没有通透性。
B.线粒体内膜能由内向外通透H+离子。
C.线粒体内膜能由外向内通透H+离子。
D.线粒体内膜能自由通透H+离子。
2. 下列有关RNA聚合酶的陈述中，哪一种是正确的？（）A. 合成多核苷酸链时，RNA聚合酶作用于核苷二磷酸。
B. RNA聚合酶作用时，需要引物。
C. RNA聚合酶在多核苷酸链的3' 端加上核苷酸。
D. RNA聚合酶可以在DNA模板的两条链上同时分别合成RNA。
3. 纤维素分子的糖苷键是（）糖苷键。
A.α(1→ 4)B. α(1→ 6)C. β(1→ 4)D. β(1→ 6)4. 前列腺素是一种（）。
A. 环羟脂酸B. 寡聚糖C. 多肽激素D. 氨基酸5. 要把膜蛋白完整地从膜上溶解下来，可以用（）。
A. 蛋白酶B. 透明质酸酶C. 去污剂D. 糖苷酶6. 形成蛋白质三级结构的驱动力是（）。
A. 离子键B. 疏水作用力C. 二硫键D. 氢键7. 真核生物mRNA的帽子结构中，m7G与多核苷酸链通过三个磷酸基连接，连接方式是（）。
A. 2ˊ-5ˊB. 3ˊ-5ˊC. 3ˊ-3ˊD. 5ˊ-5ˊ8. 在氧化脱羧反应中，需要下列哪一种辅酶？（）A. 磷酸吡哆醛B. 生物素C. 抗坏血酸D. 焦磷酸硫胺素9. 用下列方法测定蛋白质含量时，哪一种方法需要完整的肽键？（）A. 凯氏定氮法B. 紫外吸收法C. 茚三酮反应D. 双缩脲法10. 糖酵解的速度主要取决于（）的活性。
A. 磷酸葡萄糖变位酶B. 磷酸果糖激酶C. 醛缩酶D. 磷酸甘油激酶11. NADPH能为合成代谢提供还原势，NADPH中的氢主要来自（）。
A. 糖酵解B. 柠檬酸循环C. 氧化磷酸化D. 磷酸戊糖途径12. 生物体内甲基的直接供体是（）。
A. S-腺苷蛋氨酸B. 半胱氨酸C. 蛋氨酸D. 牛磺酸13. 酶催化反应中，决定酶促反应专一性的是（）。
全国硕士研究生入学统一考试英语(一)试题及答案
XX年全国硕士研究生入学统一考试英语(一)试题及答案xx年全国硕士研究生入学统一考试英语(一)试题及答案下面是的xx年全国硕士研究生入学统一考试英语(一)试题及答案，欢迎阅读，希望对大家有所帮助。
Section I Use of EnglishDirections:Read the following text. Choose the best word (s) for each numbered blank and mark A, B, C or D on the ANSWER SHEET. (10 points)Could a hug a day keep the doctor away? The answer may be a resounding “yes!”1 helping you feel close and 2 to people you care about, it turns out that hugs can bring a 3 of health benefits to your body and mind. Believe it or not, a warm embrace might even help you 4getting sick this winter.In a recent study 5 over 400 health adults, researchers from Carnegie Mellon University in Pennsylvania examinedthe effects of perceived social support and the receipt of hugs6 the partic ipants’ susceptibility to developing the mon cold after being 7 to the virus .People who perceived greater social support were less likely to e 8 with acold ,and the researchers 9 that the stress-reducingeffects of hugging10 about 32 percent of that beneficial effect. 11 among those who got a cold, the ones who feltgreater social support and received more frequent hugs had less severe 12 .“Hugging protects people who are under stress from the 13 risk for colds that’s usually14 with stress,” notes Sheldon Cohen, a professor of psychology at Carnegie. Hugging “is a marker of intimacy and helps 15 the feeling that others are there to help 16difficulty.”Some experts 17 the stress-reducing , health-related benefits of hugging to the release of oxytocin, often called “the bonding hormone” 18 it promotes attachment in relationships, including that between mother and their newborn babies. Oxytocin is made primarily in the central lower part of the brain , and some of it is released into the bloodstream. But some of it 19 in the brain, where it 20 mood, behavior and physiology.1.[A] Unlike [B] Besides [C] Despite [D] Throughout【答案】[B] Besides2.[A] connected [B] restricted [C] equal [D] inferior【答案】[A] connected3.[A] choice [B] view [C] lesson [D] host【答案】[D] host4.[A] recall [B] forget [C] avoid [D] keep【答案】[C] avoid5.[A] collecting [B] involving [C] guiding [D]affecting【答案】[B] involving6.[A] of [B] in [C] at [D] on【答案】[D] on7.[A] devoted [B] exposed [C] lost [D] attracted【答案】[B] exposed8.[A] across [B] along [C] down [D] out【答案】[C] down9.[A] calculated [B] denied [C] doubted [D] imagined【答案】[A] calculated10.[A] served [B] required [C] restored [D] explained【答案】[D] explained11.[A] Even [B] Still [C] Rather [D] Thus【答案】[A] Even12.[A] defeats [B] symptoms [C] tests [D] errors【答案】[B] symptoms13.[A] minimized [B] highlighted [C] controlled [D] increased【答案】[D] increased14.[A] equipped [B] associated [C] presented [D] pared【答案】[B] associated15.[A] assess [B] moderate [C] generate [D] record【答案】[C] generate16.[A] in the face of [B] in the form of [C] in the way of [D] in the name of【答案】[A] in the face of17.[A] transfer [B] mit [C] attribute [D] return【答案】[C] attribute18.[A] because [B] unless [C] though [D] until【答案】[A] because19.[A] emerges [B] vanishes [C] remains [D] decreases【答案】[C] remains20.[A] experiences [B] bines [C] justifies[D]influences【答案】[D]influencesSection II Reading ComprehensionPart ADirections:Read the following four texts. Answer the questions below each text by choosing A, B, C or D. Mark your answers on the ANSWER SHEET. (40 points)Text 1First two hours , now three hours—this is how far in advance authorities are remending people show up to catch a domestic flight , at least at some major U.S. airports with increasingly massive security lines.Americans are willing to tolerate time-consuming security procedures in return for increased safety. The crash of Egypt Air Flight 804,which terrorists may have downed over the Mediterranean Sea ,provides another tragic reminder of why. But demanding too much of air travelers orproviding too little security in return undermines public support for the process. And it should: Wasted time is a drag on Americans’ economic and private lives, not to mention infuriating.Last year, the Transportation Security Administration (TSA) found in a secret check that undercover investigators were able to sneak weapons---both fake and real—past airport security nearly every time they tried .Enhanced security measures since then, bined with a rise in airline travel due to the improving Chicago’s O’HareInternational .It is not yet clear how much more effective airline security has bee—but the lines are obvious.Part of the issue is that the government did not anticipate the steep increase in airline travel , so the TSA is now rushing to get new screeners on the line. Part of the issue is that airports have only so much room for screening lanes. Another factor may be that more people are trying to overpack their carry-on bags to avoid checked-baggage fees, though the airlines strongly dispute this.There is one step the TSA could take that would not require remodeling airports or rushing to hire: Enroll more people in the PreCheck program. PreCheck is supposed to be a win-win for travelers and the TSA. Passengers who pass a background check are eligible to useexpeditedscreeninglanes. This allows the TSA wants to enroll 25 millionpeople in PreCheck.It has not gotten anywhere close to that, and one big reason is sticker shock. Passengers must pay $85 every five years to process their background checks. Since the beginning, this price ta g has been PreCheck’s fatal flaw. Uping reforms might bring the price to a more reasonable level. But Congress should look into doing so directly, by helping to finance PreCheck enrollment or to cut costs in other ways.The TSA cannot continue diverting resources into underused PreCheck lanes while most of the traveling public suffers in unnecessary lines. It is long past time to make the program work.21. the crash of Egypt Air Flight 804 is mentioned to[A] stress the urgency to strengthen security worldwide.[B] highlight the necessity of upgrading major US airports.[C] explain Americans’ tolerance of current security checks.[D] emphasis the importance of privacy protection.【答案】[C] explain Americans’ tolerance of current security checks.22. which of the following contributions to long waitsat major airport?[A] New restrictions on carry-on bags.[B] The declining efficiency of the TSA.[C] An increase in the number of travelers.[D] Frequent unexpected secret checks.【答案】[C] An increase in the number of travelers.23.The word “expedited” (Line 4, Para.5) is closest in meaning to[A] faster.[B] quieter.[C] wider.[D] cheaper.【答案】[A] faster.24. One problem with the PreCheck program is[A] A dramatic reduction of its scale.[B] Its wrongly-directed implementation.[C] The government’s reluctance to back it.[D] An unreasonable price for enrollment.【答案】[D] An unreasonable price for enrollment.25. Which of the following would be the best title for the text?[A] Less Screening for More Safety[B] PreCheck-a Belated Solution[C] Getting Stuck in Security Lines[D] Underused PreCheck Lanes【答案】[B] PreCheck-a Belated SolutionText 2“The ancient Hawaiians were astronomers,” wrote Queen Liliuokalani, Hawaii’s last reigning monarch, in 1897. Star watchers were among the most esteemed members of Hawaiian society. Sadly, all is not well with astronomy in Hawaii today. Protests have erupted over construction of the Thirty Meter Telescope(TMT), a giant observatory that promises to revolutionize humanity’s view of the cosmos.At issue is the TMT’s planned location on Mauna Kea, a dormant volcano worshiped by some Hawaiians as the piko , that connects the Hawaiian Islands to the heavens. But Mauna Kea is also home to some of the world’s most powerful telescopes. Rested in the Pacific Ocean, Mauna Kea’s peak rises above the bulk of our pla’s dense atmosphere, where conditions allow telescopes to obtain images of unsurpassed clarity.Opposition to telescopes on Mauna Kea is nothing new. A small but vocal group of Hawaiians and environments have long viewed their presence as disrespect for sacred land and a painful reminder of the oupation of what was once a sovereign nation.Some blame for the current controversy belongs to astronomers. In their eagerness to build bigger telescopes, they forgot that science is the only way of understanding the world. They did not always prioritize the protection ofMauna Kea’s fragi le ecosystems or its holiness to the island’s inhabitants. Hawaiian culture is not a relic of the past; it is a living culture undergoing a renaissance today.Yet science has a cultural history, too, with roots going back to the dawn of civilization. The same curiosity to find what lies beyond the horizon that first brought early Polynesians to Hawaii’s shores inspires astronomers today to explore the heavens. Calls to disassemble all telescopes on Mauna Kea or to ban future development there ignore the reality that astronomy and Hawaiian culture both seek to answer big questions about who we are, where we e from and where we are going. Perhaps that is why we explore the starry skies, as if answering a primal calling to know ourselves and our true ancestral homes.The astronomy munity is making promises to change its use of Mauna Kea. The TMT site was chosen to minimize the telescope’s visibility around the island and to avoid archaeological and environmental impact. To limit the number of telescopes on Mauna Kea, old ones will be removed at the end of their lifetimes and their sites returned to a natural state. There is no reason why everyone cannot be weled on Mauna Kea to embrace their cultural heritage and to study the stars.26. Queen Liliuokalan i’s remark in Paragraph 1 indicates[A] its conservative view on the historical role of astronomy.[B] the importance of astronomy in ancient Hawaiian society.[C] the regrettable decline of astronomy in ancient times.[D] her appreciation of s tar watchers’ feats in her time.【答案】[B] the importance of astronomy in ancient Hawaiian society.27. Mauna Kea is deemed as an ideal astronomical site due to[A] its geographical features[B] its protective surroundings.[C] its religious implications.[D] its existing infrastructure.【答案】[A] its geographical features28. The construction of the TMT is opposed by some locals partly because[A] it may risk ruining their intellectual life.[B] it reminds them of a humiliating history.[C] their culture will lose a chance of revival.[D] they fear losing control of Mauna Kea.【答案】[B] it reminds them of a humiliating history.29. It can be inferred from Paragraph 5 that progress in today’s astronomy[A] is fulfilling the dreams of ancient Hawaiians.[B] helps spread Hawaiian culture across the world.[C] may uncover the origin of Hawaiian culture.[D] will eventually soften Hawaiians’ hostility.【答案】[C] may uncover the origin of Hawaiian culture.30. Th e author’s attitude toward choosing Mauna Kea as the TMT site is one of[A] severe criticism.[B] passive aeptance.[C] slight hesitancy.[D] full approval.【答案】[D] full approval.Text 3Robert F. Kennedy once said that a country’s GDP measures “everything except that which makes life worthwhile.” With Britain voting to leave the European Union, and GDP already predicted to slow as a result, it is now a timely moment to assess what he was referring to.The question of GDP and its usefulness has annoyed policymakers for over half a century. Many argue that it is a flawed concept. It measures things that do not matter and misses things that do. By most recent measures, the UK’sGDP has been the envy of the Western world, with record low unemployment and high growth figures. If everything was going so well, then why did over 17 million people vote for Brexit, despite the warnings about what it could do totheir country’s economic prospects?A recent annual study of countries and their ability to convert growth into well-being sheds some light on that question. Across the 163 countries measured, the UK is oneof the poorest performers in ensuring that economic growthis translated into meaningful improvements for its citizens. Rather than just focusing on GDP, over 40 different sets of criteria from health, education and civil society engagement have been measured to get a more rounded assessment of how countries are performing.While all of these countries face their own challenges , there are a number of consistent themes . Yes , there has been a budding economic recovery since the xx global crash , but in key indicators in areas such as health andeducation , major economies have continued to decline . Yet this isn’t the case with al l countries . Some relatively poor European countries have seen huge improvements across measures including civil society , ine equality and the environment.This is a lesson that rich countries can learn : When GDP is no longer regarded as the sole measure of a country’s suess, the world looks very different .So, what Kennedy was referring to was that while GDP has been the most mon method for measuring the economic activity of nations , as a measure , it is no longer enough . It does not include important factors such as environmental quality or education outes – all things that contribute to a person’s sense of well-being.The sharp hit to growth predicted around the world and in the UK could lead to a decline in the everyday services we depend on for our well-being and for growth . But policymakers who refocus efforts on improving well-being rather than simply worrying about GDP figures could avoid the forecasted doom and may even see progress .31.Robert F. Kennedy is cited because he[A]praised the UK for its GDP.[B]identified GDP with happiness .[C]misinterpreted the role of GDP .[D]had a low opinion of GDP .【答案】[D] had a low opinion of GDP32.It can be inferred from Paragraph 2 that[A]the UK is reluctant to remold its economic pattern .[B]GDP as the measure of suess is widely defied in the UK .[C]the UK will contribute less to the world economy .[D]policymakers in the UK are paying less attention to GDP .【答案】[B]GDP as the measure of suess is widely defied in the UK .33.Which of the following is true about the recent annual study ?[A]It is sponsored by 163 countries .[B]It excludes GDP as an indicator.[C]Its criteria are questionable .[D]Its results are enlightening .【答案】[D]Its results are enlightening .34.In the last two paragraphs , the author suggeststhat[A]the UK is preparing for an economic boom .[B]high GDP foreshadows an economic decline .[C]it is essential to consider factors beyond GDP .[D]it requires caution to handle economic issues .【答案】[C]it is essential to consider factors beyond GDP .35.Which of the following is the best title for thetext ?[A]High GDP But Inadequate Well-being , a UK Lesson[B]GDP Figures, a Window on Global Economic Health[C]Rebort F.Kennedy, a Terminator of GDP[D]Brexit, the UK’s Gateway to Well-being【答案】[A]High GDP But Inadequate Well-being , a UK LessonText 4In a rare unanimous ruling, the US Supreme Court has overturned the corruption conviction of a former Virginia governor, Robert McDonnell. But it did so while holding its nose at the ethics of his conduct, which included aepting gifts such as a Rolex watch and a Ferrari automobile from a pany seeking aess to government.The high cour t’s decision said the judge in Mr. McDonnell’s trial failed to tell a jury that it must look only at his “official acts,” or the former governor’s decisions on “specific” and “unsettled” issues related to his duties.Merely helping a gift-giver gain aess to other officials, unless done with clear intent to pressure those officials, is not corruption, the justices found.The court did suggest that aepting favors in return for opening doors is “distasteful” and “nasty.” But under anti-bribery laws, proof must be made of concrete benefits, such as approval of a contract or regulation. Simply arranging a meeting, making a phone call, or hosting an event is not an “official act”.The court’s ruling is legally sound in defining a kind of favoritism that is not criminal. Elected leaders must be allowed to help supporters deal with bureaucratic problems without fear of prosecution for bribery.” The basic pact underlying representative government,” wrote Chief Justice John Roberts for the court,” assumes that public officials will hear from their constituents and act on their concerns.”But the ruling reinforces the need for citizens and their elected representatives, not the courts, to ensure equality of aess to government. Officials must not be allowed to play favorites in providing information or in arranging meetings simply because an individual or group provides a campaign donation or a personal gift. This type of integrity requires well-enforced laws in government transparency, such as records of official meetings, rules on lobbying, and information about each elected leader’s source of wealth.Favoritism in official aess can fan public perceptions of corruption. But it is not always corruption. Rather officials must avoid double standards, or different types of aess for average people and the wealthy. If connections can be bought, a basic premise of democratic society—that all are equal in treatment by government—is undermined.Good governance rests on an understanding of the inherent worth of each individual.The court’s ruling is a step forward in the struggle against both corruption and official favoritism.36. The undermined sentence (Para.1) most probably shows that the court[A] avoided defining the extent of McDonnell’s duties.[B] made no promise in convicting McDonnell.[C] was contemptuous of McDonnell’s conduct.[D] refused to ment on McDonnell’s ethics.【答案】[C] was contemptuous of McDonnell’s conduct.37. Aording to Paragraph 4, an official act is deemed corruptive only if it involves[A] leaking secrets intentionally.[B] sizable gains in the form of gifts.[C] concrete returns for gift-givers.[D] breaking contracts officially.【答案】[C] concrete returns for gift-givers.38. The court’s ruling is bas ed on the assumption that public officials are[A] justified in addressing the needs of their constituents.[B] qualified to deal independently with bureaucratic issues.[C] allowed to focus on the concerns of their supporters.[D] exempt from conviction on the charge of favoritism.【答案】[A] justified in addressing the needs of their constituents.39. Well-enforced laws in government transparency are needed to[A] awaken the conscience of officials.[B] guarantee fair play in official aess.[C] allow for certain kinds of lobbying.[D] inspire hopes in average people.【答案】[B] guarantee fair play in official aess.40. The author’s attitude toward the court’s rulingis[A] sarcastic.[B] tolerant.[C] skeptical.[D] supportive【答案】[D] supportivePart BDirections:The following paragraphs are given in a wrong order. For Questions 41-45, you are required to reorganize these paragraphs into a coherent article by choosing from thelist A-G to filling them into the numbered box. ParagraphsB and D have been correctly placed. Mark your answers on ANSWER SHEET. (10 points)[A]The first published sketch, “A Dinner at Poplar Walk” brought tears to Dickens’s eyes when he discovered it in the pages of The Monthly Magazine. From then on his sketches ,which appeared under the pen name “Boz” inThe Evening Chronicle, earned him a modest reputation.[B]The runaway suess ofThe Pickwick Papers, as it is generally known today, secured Dickens’s fame. There were Pickwick coats and Pickwick cigars, and the plump, spectacled hero, Samuel Pickwick, became a national figure.[C]Soon after Sketches by Bozappeared, a publishingfirm approached Dickens to write a story in monthly installments, as a backdrop for a series of woodcuts by the ten-famous artist Robert Seymour, who had originated the idea for the story. With characteristic confidence, Dickens suessfully insisted that Seymour’s pictures illustrate his own story instead. After the first installment, Dickens wrote to the artist and asked him to correct a drawing Dickens felt was not faithful enough to his prose. Seymour made the change, went into his backyard, and expressed his displeasure by mitting suicide. Dickens and his publishers simply pressed on with a new artist. The ic novel, The Posthumous Papers of the Pickwick Club, appeared seriallyin 1836 and 1837, and was first published in book form in 1837.[D]Charles Dickens is probably the best-known and, to many people, the greatest English novelist of the 19th century. A moralist, satirist, and social reformer. Dickens crafted plex plots and striking characters that capture the panorama of English society.[E]Soon after his father’s release from prison,Dickens got a better job as errand boy in law offices. He taught himself shorthand to get an even better job later as a court stenographer and as a reporter in Parliament. Atthe same time, Dickens, who had a reporter’s eye for transcribing the life around him especially anything ic or odd, submitted short sketches to obscure magazines.[F] Dickens was born in Portsmouth, on England’s southern coast. His father was a clerk in the British navy pay office –a respectable position, but wish little social status. His paternal grandparents, a steward and a housekeeper possessed even less status, having been servants, and Dickens later concealed their background. Dicken’s mother supposedly came from a more respectable family. Yet two years before Dicken’s birth, his mother’s father was caught stealing and fled to Europe, never to return. The family’s increasing poverty forced Dickens out of school at age 12 to work in Warren’s Blacking Warehouse,a shoe-polish factory, where the other working boys mocked him as “the young gentleman.” His father was then imprisoned fo r debt. The humiliations of his father’s imprisonment and his labor in the blacking factory formed Dicken’s greatest wound and became his deepest secret. He could not confide them even to his wife, although they provide the unacknowledged foundation of his fiction.[G] After Pickwick, Dickens plunged into a bleaker world. In Oliver Twist, e traces an orphan’s progress from the workhouse to the criminal slums of London. Nicholas Nickleby, his next novel, bines the darkness of Oliver Twist with the sunlight of Pickwick. The popularity of these novels consolidated Dichens’ as a nationally and internationally celebrated man of letters.D → 41. → 42. → 43. → 44. → B →45.【答案】41. [F] Dickens was born in Portsmouth42. [E] Soon after his father’s re lease from prison43. [A]The first published sketch44. [C]Soon after Sketches by Bozappeared45. [G] After Pickwick, Dickens plunged into a bleaker worldPart CDirections:Read the following text carefully and then translate the underlined segments into Chinese. Your translation should be written neatly on the ANSWER SHEET. (10 points) The growth of the use of English as the world`s primary language for international munication has obviously been continuing for several decades.(46)But even as the number of English speakers expands further there are signs that the global predominance of the language may fade within the foreseeable future.Complex international, economic, technological and culture change could start to diminish the leading position of English as the language of the world market, and UK interests which enjoy advantage from the breath of English usage would consequently face new pressures. Thoserealistic possibilities are highlighted in the study presented by David Graddol(47)His analysis should therefore end any self-contentedness among those who may believe that the global position of English is so stable that the young generation of the United Kingdom do not need additional language capabilities.David Graddol concludes that monoglot English graduates face a bleak economic future as qualified multilingual youngsters from other countries are proving to have a petitive advantage over their British counterparts inglobal panies and organizations. Alongside that,(48)many countries are introducing English into the primary-school curriculum but British schoolchildren and students do not appear to be gaining greater encouragement to achieve fluency in other languages.If left to themselves, such trends will diminish the relative strength of the English language in international education markets as the demand for educational resourcesin languages, such as Spanish ,Arabic or Mandarin grows and international business process outsourcing in other language such as Japanese, French and German, spreads.(49)The changes identified by David Graddol all present clear and major challenges to UK`s providers of English language teaching to people of other countries and to broader education business sectors.The English language teaching sector directly earns nearly &1.3 billion for the UK in invisible exports and our other education related explores earn up to &10 billion a year more. As the international education market expands, the recent slowdown in the number of international students studying in the main English-speaking countries is likely to continue, especially if there are no effective strategic policies to prevent such slippage.The anticipation of possible shifts in demand provided by this study is significant:(50)It gives a basis to allorganization which seek to promote the learning and very different operating environment.That is a necessary and practical approach. In this as in much else, those who wish to influence the future must prepare for it.【答案】(46) 但是即使当下英语使用者的人群还在进一步扩大，有迹象说明：在可预见的未来，英语可能会逐渐失去其全球主导地位。
2024年全国硕士研究生招生考试英语一真题考研英语一
2024年全国硕士研究生入学统一考试英语(一)试题Section I Use of EnglishDirections:Read the following text.Choose the best word(s) for each numbered blank and mark A,B,C or D on the ANSWER SHEET.(10 points)There's nothing more welcoming than a door opening for you. 1 the need to be touched to open or close, automatic doors are essential in 2disabled access to buildings and helping provide general3to commercial buildings.Self-sliding doors began to emerge as a commercial product in 1960 after being invented six years4by Americans Dee Horton and Lew Hewitl. They5as a novelty feature, but as their use has grown, their 6 have extended within our technologically advanced world.Particularly7in busy locations or during times of emergency, the doors8crowdmanagement by reducing the obstacles put in people's way.9 making access both in and out of buildings easier for people, the difference in the way many of these doors open helps reduce the total area10 by them. Automatic doors often open to the side, with the panels sliding across one another. Replacing swing doors, these 11 smaller buildings to maximise the usable space inside without having to12 the way for a large, sticking-out door. There are many different types of automatic door, with each13 specific signals to tell them when to open.14 these methods differ, the main15 remain the same.Each automatic door system 16 the light, sound weight or movement in their vicinity as a signal to open. Sensor types are chosen to 17 the different environments they are needed in.18,a busy street might not19 a motion-sensored door, as it would constantly be opening for passers-by. A pressure sensitive mat would be more20 to limit the surveyed area.1.[A]Through [B]Despite [C]Besides [D]Without2.[A]revealing [B]demanding [C]improving[D]tracing3.[A]experience [B]convenience[C]guidance [D]reference4.[A]previously[B]temporarily [C]successively [D]eventually5.[A]held on [B]started out[C]settled down [D]went by6.[A]relations [B]volumes [C]benefits[D]sources7.[A]useful[B]simple [C]flexible [D]stable8.[A]call for [B]yield to [C]insist on [D]act as9.[A]As well as[B]In terms of [C]Thanks to [D]Rather than10.[A]connected[B]shared [C]represented [D]occupied11.[A]allow[B]expect [C]require [D]direct12.[A]adopt [B]lead [C]clear[D]change13.[A]adapting te [B]deriving from [C]relying on[D]pointing at14.[A]Once [B]Since [C]Unless [D]Although15.[A]records [B]positions [C]principles[D]reasons16.[A]controls [B]analyses[C]produces [D]mixes17.[A]decorate [B]compare [C]protect [D]complement18.[A]In conclusion [B]By contrast [C]For example[D]Above all19.[A]identify [B]suit[C]secure [D]include20.[A]appropriate[B]obvious [C]impressive [D]delicateSection II Reading ComprehensionPart ADirections:Read the following four texts. Answer the questions below each text by choosing A,B,C or D. Mark your answers on the ANSWER SHEET.(40 points)Text 1Nearly 2000 years ago, as the Romans began to pull out of Scotland, they left behind a curious treasure:10 tons of nails, nearly a million of the things. The nail hoard was discovered in 1960 in a four-metre-deep pit covered by two metres of gravel.Why had the Romans bunied a million nails? The likely explanation is that the withdrawal was rushed, and they didn't want the local Caledonians getting their hands on 10 tons of weapon-grade iron. The Romans buried the nails so deep that they would not be discovered for almost two millennia.Later civilisations would value the skilled blacksmith's labour in a nail even more than the raw material. As Roma Agrawal explains in her new delightful book Nuts and Bolts, early 17th-century Virginians would sometimes bum down their homes if they were planning to relocate. This was an attempt to recover the valuable nails, which could be reused after sifting the ashes. The idea that one might bum down an entire house just to reclaim the nails underlines how scarce, costly and valuable the simple-seeming technology was.The price of nails fell by 90%between the late 1700s and mid-1900s,as economist Daniel Sichel points out in a research paper. According to Sichel, although the falling price of nails was driven partly by cheaper iron and cheaper energy, most of the credit goes to nail manufactures who simply found more efficient ways to turn steel into nails.Nails themselves have changed over the years, but Sichel studied them because they haven't changed much. Roman lamps and Roman chariots are very different from LED strips and sports cars,but Roman nails are still clearly nails. It would be absurd to try to track the changing price of sports cars since 1695,but to ask the same question of nails makes perfect sense.I make no apology for being obsessed by a particular feature of these objects: their price. I am an economist, after all. After writing two books about the history of inventions, one thing Ive leamt is that while it is the enchantingly sophisticated technologies that get all the hype, it's thecheap technologies that change the world.The Gutenberg printing press transformed civilisation not by changing the nature of writing but by changing its cost-and it would have achieved little without a parallel collapse in the price of surfaces to write on, thanks to an often-overlooked technology called paper. Solar panels had few niche uses until they became cheap; now they are transforming the global energy system.21.The Romans buried the nails probably for the sake of[A]saving them for future use[B]keeping them from rusting[C]letting them grow in value[D]hiding them from the locals22.The example of early 17th-century Virginians is used to[A]highlight the thriftiness of early American colonists[B]illustrate the high status of blacksmiths in that period[C]contrast the attitudes of different civilisations toward nails[D]show the preciousness of nail-making technology at that time23.What played the major role in lowering the price of nails after the late 1700s?[A]Increased productivity.[B]Wider use of new energies.[C]Fiercer market competition.[D]Reduced cost of raw materials.24.It can be leamed from Paragraph 5 that nails[A]have undergone many technological improvements[B]have remained basically the same since Roman times[C]are less studied than other everyday products[D]are one of the world's most significant inventions25.Which of the following best summarises the last two paragraphs?[A]Cheap technologies bring about revolutionary change.[B]Technological innovation is integral to economic success.[C]Technology defines people's understanding of the world.[D]Sophisticated technologies develop from small inventions.Text 2Parenting tips obtained from hunter-gatherers in Africa may be the key to bringing up more contented children, researchers have suggested. The idea is based on studies of communities such as the Kung of Botswana, where each child is cared for by many adults. Kung children as young as four will help to look after younger ones and baby-wearing", in which infants are carried in slings, is considered the norm.According to Dr Nikhil Chaudhary, an evolutionary anthropologist at Cambridge University, these practices, Known as all oparenting, could lead to less anxiety for children and parents.Dr Annie Swanepoel, a child psychiatrist, believes that there are ways to incorporate them into western life. In Germany, one scheme has paired an old people's home with a nursery. The residents help to look after the children, an arrangement akin to alloparenting. Another measure could be encouraging friendships between children indifferent school years to miror the unsupervised mixed-age playgroups in hunter-gatherer communities.In a paper published in the Journal of Child Psychology and Psychiatry, researchers said that the western nuclear family was a recent invention which family broke with evolutionary history. This abrupt shift to an "intensive mothering narrative", which suggests that mothers should manage childcare alone, was likely to have been harmful. "Such narratives can lead to maternal exhaustion and have dangerous consequences, "they wrote.By contrast, in hunter-gatherer societies adults other than the parents can provide almost half of a child's care. One previous study looked at the Efe people of the Democratic Republic of Congo. It found that infants had an average of 14 alloparents a day by the time they were 18 weeks old and were passed between caregivers eight times an hour.Chaudhary said that parents now had less childcare support from family and social networks than during most of humans'evolutionary history,but introducing additional caregivers could reduce stress and maternal depression,which could have a“knock-on"benefit to a child's wellbeing.An infant bom to a hunter-gatherer society could have more than ten caregivers-this contrasts starkly to nursery settings in the UK where regulations call for a ratio of one carer to four children aged two to three.While hunter-gatherer children leamt from observation and imitation in mixed-age playgroups,researchers said that western"instructive teaching",where pupils are asked to sit still,may contribute to conditions such as attention deficit hyperactivity disorder.Chaudhary said that Britain should explore the possibility that older siblings helping their parents“might also enhance their own social development”26.According to the first two paragraph,alloparenting refers to the practice of[A]sharing child care among community members[B]assigning babies to specific adult caregivers[C]teaching parenting details to older children[D]carrying infants around by their parent27.The scheme in Germany is mentioned to illustrate[A]an attempt to facilitate intergenerational communication[B]an approach to integrating alloparenting into western culture[C]the conventional parenting style in western culture[D]the differences between western African ways ofliving28.According to Paragraph 4,the"intensive mothering narrative"_[A]alleviate parenting pressure[B]considerate family relationships[C]results in the child-centered family[D]departs from the course of evolution29.According to paragraph 6,what can we lean about nursery in the UK?[A]They tend to fall short of official requirements.[B]They have difficulty finding enough caregivers.[C]They ought to improve their carer-to-child ratio.[D]They should try to prevent parental depression.30.Which of the following would be the best title?[A]Instructive teaching:a dilemma for anxious parents[B]For a happier family,learn from the hunter-gatherers[C]Mix-aged playgroup,a better choice for lonely children[D]Tracing the history of parenting:from Africa to EuropeText 3Rutkowski is a Polish digital artist who uses classical painting styles to create dreamy fantasy landscapes.He has made illustrations for games such as Sony's Horizon Forbidden West,Ubisoft's Anno,Dungeons&Dragons,and Magic:The Gathering.And he's become a sudden hit in the new world of text-to-image AI generation.His distinctive style is now one of the most commonly used prompts in the new open-source AI art generator Stable Diffusion,which was launched late last month.The tool,along with other popular image-generation AI models,allows anyone to create impressive images based on text prompts.For example,type in"Wizard with sword and a glowing orb of magic fire fights a fierce dragon GregRutkowski,"and the system will produce something that looks not a milion miles away from works in Rutkowski's style.But these open-source programs are built by scraping images from the Internet,often without permission and proper attribution to artists.As a result,they are raising tricky questions about ethics and copyright.And artists like Rutkowski have had enough.According to the website Lexica,which tracks over 10 million images and prompts generated by Stable Diffusion,Rutkowski's name has been used as a prompt around 93,000 times.Some of the world's most famous artists,such as Michelangelo,Pablo Picasso,and Leonardo da Vinci,brought up around 2,000 prompts each or less.Rutkowski's name also features as a prompt thousands of times in the Discord of another text-to-image generator,Midjourney.Rutkowski was initially surprised but thought it might be a good way to reach new audiences.Then he tried searching for his name to see if a piece he had worked on had been published.The online search brought back work that had his name attached to it but wasn't his.“It's been just a month.What about in a year?I probably won't be able to find my work out there because[the internet]will be flooded with AI art,"Rutkowski says."That's concerning."“There is a coalition growing within artist industries to figure out how to tackle or mitigate this,"says Ortiz.The group is in its early days of mobilization,which could involve pushing for new policies or regulation.One suggestion is that AI models could be trained on images in the public domain,and AI companies could forge partnerships with museums and artists,Ortiz says.31.What can be leamed about Rutkowski from the first two paragraphs?[A]He is enthusiastic about AI generation painting.[B]He is popular with the users of an Al art generator.[C]He attracts admiration from other illustrators.[D]He specializes in classical painting digitalization.32.The problem with open-source AI art generators is that they[A]lack flexibility in responding to prompts[B]produce artworks in unpredictable styles[C]make unauthorized use of online images[D]collect user information without consent33.After searching online,Rutkowski found[A]a unique way to reach audiences[B]a new method to identify Al images[C]AI-generated work bearing his name[D]heated disputes regarding his copyright34.According to Ortiz,AI companies are advised to[A]campaign for new policies or regulations[B]offer their services to public institutions[C]strengthen their relationships with AI users[D]adopt a different strategy for Al model training35.What is the text mainly about?[A]Artists'responses to Al art generation.[B]AI's expanded role in artistic creation.[C]Privacy issues in the application of Al.[D]Opposing views on AI development.Text 4The miracle of the Chesapeake Bay lies not in its depths,but in the complexity of its natural construction,the interaction of fresh and saline water and the mix of land and water.The shallows provide homes for hundreds of species while storing floodwaters,filtering pollutants from water,and protecting nearby communities from potentially destructive storm surges.All this was put at great risk late last month,when the US Supreme Court issued a ruling in an Idaho case that provides the EPA far less authority to regulate wetlands and waterways.Specifically,a 5-4 majority decided that wetlands protected by the EPA under it Clean Water Act authority must have a“continuous surface connection”to bodies of water.This narrowing of the regulatory scope was a victory for builders,mining operators and other commercial interests often at odds with environmental rules.And it carries"significant repercussions for water quality and flood control throughout the US,"as Justice Brett Kavanaugh observed.In Maryland,the good news is that there are many state laws in place that provide wetlands protections.But that's a very shortsighted view,particularly when it comes to the Chesapeake Bay.The reality is that water and the pollutants that so often come with it,don't respect state boundaries.The Chesapeake draws from a 64000-square-mile watershed that extends to Virginia,Pennsylvania,New York,West Virginia,the District of Columbia and Delaware.Will thosejurisdictions extend the same protections now denied under Sackett V.EPA?Perhaps some,but all?That seems unlikely.It is too easy,and misleading,to see such court rulings as merely standing up for the rights of land owners when the consequences can be so dire for their neighbors.And it's reminder that they EPA's involvement in the Chesapeake Bay program has long been crucial as the means to transcend the influence of deep-pocketed special interests in neighboring states.Pennsylvania farmers,to use one telling example,aren't thinking about next year's blue crab harvest in Maryland when they decide whether to spread animal waste on their fields,yet the runoff into nearby creeks can have enormous impacts downstream.And so we would also call on state lawmakers from Richmond to Albany to consider reviewing their own wetlands protections and see for themselves the enormous stakes involved.We can't offer them a trip to the Chesapeake Bay model.It's been gone since the 1980s but perhaps a visit to Blackwater National Wildlife Refuge in Dorchester County where American bald eagles fly over tidal marshes so shallow you could not paddle a boat across them but teaming with aquatic life.It's worth the scenic drive.36.The Chesapeake Bay is described in Paragraph 1 as[A]a value natural environment[B]a controversial conservation area[C]a place with commercial potential[D]a headache for nearby communities37.The U.S.Supreme Court's ruling in the Idaho case[A]reinforces water pollution control[B]weakens the EPA's regulatory power[C]will end conflicts among local residents[D]may face opposition from mining operators38.How does the author feel about the future of the Chesapeake Bay?[A]Worried.[B]Puzzled.[C]Relieved[D]Encouraged.39.What can be inferred about the EPA's involvement in the Chesapeake BayProgram?[A]It has restored the balance among neighboring jurisdictions.[B]It has triggered a radical reform in commercial fisheries.[C]It has set a fine example of respecting state authorities.[D]It has ensured the coordination of protection efforts.40.The author holds that the state lawmakers should[A]be cautious about the influence of landowners[B]attach due importance to wetlands protections[C]recognize the need to expand wildlife refugesPart BDirections:Read the following comments on a report about American museums returning artifacts to their countries of origin and a list of statements summarizing the comments.Choose the best statement from the list A-G for each numbered name(41—45).There are two extra choices which you do not need to use.Mark your answers on the ANSWER SHEET.(10 points)(41)HannabSimply,there are people in Nigeria who cannot travel to the Smithsonian Institution to see that part of their history and culture represented by the Benin Bronzes.These should be available to them as part of their cultural heritage and history and as a source of national pride.There is no good reason that these artifacts should be beyond the ordinary reach of the educational objectives or inspiration of the generations to which they were left.They serve no purpose in a museum in the United States or elsewhere except as curious objects.They cannot be compared to works of art produced for sale which can be passed from hand to hand and place to place by purchase.(42)BuckWe know very exact reproductions of artwork can be and are regularly produced.Perhaps museums and governments might explore some role for the use of nearly exact reproductions as a means of resolving issues relating to returning works of art and antiquities.The context of any exhibit is more important to me than whether the object being displayed is 2,000 years old or 2 months old.In many cases the experts have a hard time agreeing on what is the real object and what is a forgery.Again,the story an exhibit is trying to tell is what matters.The monetary value of the objects on display is a distant second place in importance.(43)SaraWhen visiting the Baltimore Museum of Art,I came across a magnificentlSth-century Chinese sculpture.It inspired me to learm more about the culture that it represented.Artifacts in museums have the power to inspire,and perhaps spark that need to learn and understand the nature of their creators.Having said that,I do feel that whatever artifacts find their way to public museums should,in fact,be sanctioned as having been obtained on loan,legally purchased,or obtained by treaty.Stealing artifacts from other peoples'cultures is obscene;it robs not only the physical objects,but the dignity and spirit of their creators.(44)VictorAncient art that is displaced in foreign countries should be returned.…(缺失)(45)JuliaTo those of you in the comments section,by all means,who are having strong feeling about artifacts being removed from cities in the US and Britain,I would ask you to consider…(缺失)[A]It is clear that countries of origin have never been compensated for stolen artifacts.[B]It is a flawed line of reasoning to argue against returning artifacts to their countries of origin.[C]Museum visitor can still learn as much from artifacts copies after the originals are returmed.[D]Reproductions,even if perfectly made,cannot take the place of the authentic objects.[E]The real value of artifacts can only be recognized in their countries of origin rather than anywhere else[F]Ways to get artifacts from other countries must be decent and lawful.[G]Concern over security is no excuse for refusing to return artifacts to their countries of origin. 参考答案：41.E 42.C 43.F 44.G 45.BPart CDirections:Read the following text carefully and then translate the underlined segments into Chinese.Your translation should be written clearly on the ANSWER SHEET.(10 points)“Elephants never forget”—or so they say—and that piece of folklore seems to have some foundation.The African savanna elephant also known as the African bush elephant,is distributed across 37 African countries.(46)They sometimes travel more than sixty miles to find food or water,anc are very good at working out where other elephants are—even when they are out of ing tracking devices,researchers have shown that they have"remarkable spatial acuity",when finding their way to waterholes,they headed off in exactly the right direction,on one occasion from a distance of roughly thirty miles.What is more,they almost always seem to choose the nearest water hole.(47)The researchers are convinced that the elephants always know precisely where they are in relation to all the resources they need,and can therefore take shortcuts,as well as following familiar routes.Although the cues used by African elephants for long-distance navigation are not yet understood,smell may well play a part.Elephants are very choosy eaters,but until recently litle was known about how they selected their food.(48)One possibility was that they merely used their eyes and tried out the plants they found,but that would probably result in a lot of wasted time and energy,not least because their eyesight is actually not very good.(49)The volatile chemicals produced by plants can be carried a long way,and they are very characteristic:Each plant or tree has its own particular odor signature.What is more,they can be detected even when they are not actually visible.New research suggests that smell is a crucial factor in guiding elephants—and probably other herbivores—to the best food resources.The researchers first established what kinds of plant the elephants preferred either to eat or avoid when foraging freely.They then set up a“food station”experiment,in which they gave elephants a series of choices based only on smell.(50)The experiment showed that elephants may well use smell to identify patches of trees that are good to eat,and secondly to assess the quality ofthe trees within each patch.Free-ranging elephants presumably also use this information to locate their preferred food.参考译文：(46)它们有时跋涉六十多英里寻找食物或水，并且非常善于寻找其他大象的位置——即使它们不在视线范围内。
西安电子科技大学硕士研究生入学考试试题(含答案)
也可利用不进位乘法或列表法计算。 11、已知 H ( s ) 的零极点分布图如下图所示，单位冲激响应 h(t ) 的初始值 h(0 ) = 2 ，则该 系统的系统函数 H (s) = 。
+
jω
×
j2
2 σ
−j2
−2 ×
解：由零极点分布图可写出
s →∞
H ( s) =
H 0 ( s − 2) ( s + 2) 2 + 4
对应原函数为
−3 1 −1 1 × = + ， − 1 < Re[ s ] < 2 s − 2 s +1 s − 2 s +1
e2 t ε (−t ) + e − t ε (t )
3 1 1 1 × = ， Re[ s ] > 2 s − 2 s +1 s − 2 s +1
−t
3e 2t ε (t ) ∗ e − t ε (t ) ↔
5
π
H ( jω )
ϕ (ω )
5
−10
0 (a)
10ω
−5 0 −5
5
ω
(b)
A C
、 f (t ) = cos t + cos(8t )
B
、 f (t ) = sin(2t ) + sin(4t )
2
、 f (t ) = sin(2t ) sin(4t ) D、 f (t ) = cos (4t ) 解：选 B。由系统的幅频特性和相频特性可知：若输入信号的频率均处于 ω = −5 ∼ 5 之间， 既不产生幅度失真又不产生相位失真。只有 B 满足这一条件。 d 6、信号 f (t ) = [e ε (t )] 的傅里叶变换 F ( jω ) 等于 dt
全国硕士研究生入学考试英语试题及答案
全国硕士研究生入学考试英语试题及答案一、听力部分题目一[听力材料]1.What does the woman want to do?A. Visit a museum.B. Go shopping.C. Have a coffee.2.What is the man doing?A. Taking pictures.B. Writing a report.C. Doing some research.3.What did the man say he had just done?A. Made a phone call.B. Checked his email.C. Talked to his boss.[答案解析]1. A2. A3. B题目二[听力材料]1.What does the man suggest that they do?A. Watch a movie.B. Go to a concert.C. Have a party.2.How long will the concert last?A. About an hour.B. About two hours.C. About three hours.3.What does the woman say about the singer?A. She is very popular.B. She is not very good.C. She has a great voice. [答案解析]1. A2. B3. C二、阅读理解部分题目一[文章]Researchers have developed a new technique that could help treat cancer by using an electric field to guide cancer-fighting medication directly to tumors. The team used microscopic particles called nanovesicles (small enough to enter the bloodstream) to deliver chemotherapy drugs specifically to cancer cells. These nanovesicles were then activated with an electric field, causing them to pass through the blood vessels and into the tumors themselves.题目What is the new technique that researchers have developed?A. A way to guide electric fields to tumors.B. A technique to deliver chemotherapy drugs to cancer cells.C. A method to activate microscopic particles.[答案解析]B题目二[文章]The rising cost of housing in big cities is driving workers to move to smaller towns. For many, the decision to leave urban areas is not only about money, but also about improving their quality of life.题目Why are workers moving to smaller towns?A. Because of the rising cost of housing in big cities.B. Because they want to live in a quieter environment.C. Because they want to be closer to nature.[答案解析]A三、翻译部分题目一[中文]一旦这种新技术被用于生产，它将彻底改变这个行业。