final exam1
微观经济学期末考试
对象：经济学专业本科班 答卷时间：2小时，8：00-10：00
第一部分、证明题（共20分）
1、证明以下包络定理相关问题：
（1）给定函数1(,...;)n y f x x a =，a 为参数，各个x 为自变量。
假设存在自变量的组合*
*
1(,...)n x x 使得此函数存在最优值*y ，试证明包络定理成立：*//|*dy da f a x x =∂∂=，即函数最优值随着参数的变化规律可以直接对原函数求偏导数得到。
（5分）
（2）上一问中的证明称为不带约束的包络定理，如果自变量必须服从约束条件：1(,...;)0n g x x a =。
试证明使得函数1(,...;)n y f x x a =取得的最优值*y 随着参数a 变化的规律满足：*//|*dy da L a x x =∂∂=，其中11(,...;)(,...;)n n L f x x a g x x a λ=+代表拉格朗日方程。
此证明为带约束条件的包络定理。
（6分）
（3）包络定理对于理解消费者剩余和生产者剩余至关重要，试简单说明：在分析价格上升对消费者剩余和生产者剩余影响时，是分别如何应用包络定理的。
（4分）
2、已知企业的生产函数为20.52Q L K =。
问：（1）该企业的生产是规模报酬不变的么？该生产函数是齐次函数么？（2）此函数边际生产力递减规律成立么？（5分）
第二部分、计算题（每题20分，共60分）
1、考虑社会的一个典型个体，生存两个时期，两期收入为：第一期收入300，第二期收入500。
存在借贷市场，市场利率给定为10%。
社会只有一种消费品，价格两期都为1。
在以下各种情况下，考虑不同的消费结果。
（1）若个体效用函数为：1212ln()0.8ln()(,)x x U x x +=，1x 和2x 分别为两期消费量，试求：如果消费者不能借钱，那么他的两期最优消费组合是什么？（5分）
（2）效用函数同上一问，但借贷市场是有效的，消费者可以借到想借并能够在下一期偿还的钱，此时消费者两期最优消费组合和上一问是否不同？（5分）
（3）如果第一问中效用函数中的1x 和2x 分别代表两种商品的消费量，消费者只生存一个时期，收入为500，两种商品价格都是1。
假设政府想征收50元的税，那么它有两个选择：一是对收入征收10%的所得税，第二是对商品1征收消费税，请设置一个恰好能够在消费者最优消费时征收到50的税率。
（5分）
（4）计算比较第三问中两种措施对消费者效用的影响，哪种情况下消费者效用较大？（5分）
2、在一个完全竞争市场，单个厂商的长期成本函数为32LTC=Q
-10Q +100Q ，此时市
场价格P=200，则：
（1）该厂商利润最大化的产量、平均成本和利润是多少？（8分）
（2）该行业是否处于长期均衡？为什么？（2分）
（3）该行业处于长期均衡时每个厂商的产量、平均成本和利润是多少？（8分）
（4）判断（1）中厂商是处于规模经济阶段还是规模不经济阶段？（2分）
3、考虑某个国内产品市场，需求曲线为：2002Q P =-，供给曲线为3Q P =，求：
（1）求竞争均衡价格和产量。
（2分）
（2）如果每单位产品征收10元的消费税，求生产者和消费者各负担多少税收？（4分）
（3）考虑此种产品世界价格是60元，如果可以自由贸易，没有任何税收，此时消费者剩余和生产者剩余各为多少？相比于没有国际贸易，自由贸易带来了多少总剩余的增加？（7分）
（4）考虑第三问，如果政府为每单位出口提供10元的补贴，那么新的国内价格和消费量是多少？相比于第三问的福利结果有何变化？（7分）
第三部分、简答题（共20分）
1、简要回答以下问题：
（1）对效用函数有哪些假设？哪个假设能够保证给定预算约束的效用最大化问题有唯一解？（4分）
（2）解释竞争市场短期生产者剩余和长期生产者剩余的内涵，并说明其区别？（4分）
（3）解释支出函数、成本函数、利润函数的概念。
（4分）
（4）解释希克斯需求曲线和马歇尔需求曲线的差别。
（4分）
（5）解释收入效应和替代效应的概念，以及正常商品和劣等商品的概念。
（4分）。
CCNA1 Final Exam CCNA第一学期期末考试2011-10-10
CCNA1 ENetwork Final Exam - CCNA Exploration: 网络基础知识(版本4.0)这是我自己做的，其中一道题错误，不知道是哪个，被扣了2分。
日期：2011-10-10 1下列有关网络层编址的陈述中哪三项是正确的?（选择三项。
）网络层编址使用分层式结构。
使用长度为48 位的地址。
以太网交换机可以使用它来作出转发决定。
它不支持广播。
其使用的编址方法可以识别地址的网络部分。
网络层编址可以区分每台主机。
2请参见图示。
在PC 上发出所示的命令。
IP 地址192.168.33.2 代表什么？主机的IP 地址主机的默认网关主机的主页IP 地址主机的首选域名服务器网站resolver1.mooki.local 的IP 地址。
3哪三个地址属于公有IP 地址？（选择三项。
）127.0.0.1196.1.105.6132.11.9.9910.0.0.1172.16.9.1046.1.1.974数据链路层有哪两项功能？（选择两项）分割和记录数据。
在源主机和目的主机上运行的程序之间进行数据交换。
控制数据如何传递到介质中。
生成信号以表示每个帧中的比特。
使用帧头和帧尾封装每个数据包，以便在本地介质中进行传输。
5请参见图示。
主机A 要访问Internet。
哪项第2 层地址和第3 层地址的组合可以让主机A 实现此访问？目的MAC：0030.8596.DE83，默认网关：209.165.202.130目的MAC：0030.8596.DE82，默认网关：172.16.9.2目的MAC：0030.8517.44C4，默认网关：172.16.1.1目的MAC：0030.8517.44C4，默认网关：209.165.202.1306下列哪三项是CSMA/CD 的特征？（选择三项。
）设备会侦听介质，并且仅当无法检测到介质上存在其它信号时才会传输数据。
介质上的所有设备均可侦听所有通信。
设备根据配置的优先级来进行通信。
各种考试的英文表达
考试种种考试examination(常简写为exam)或test 期中考试mid-term examination期终考试final exam, terminal exam 口语考试oral exam(或test)笔试written exam补考make-up exam统考unified examination高考college entrance examination 面试interview(多指应聘人员的面试)初试preliminary tests小考quiz(多用于美国)普通水平考试0 level examination 分班考试placement tests成绩考试achievement tests水平考试proficiency tests学能(潜能)考试aptitute tests瞻前性考试tests for prospective purposes 诊断性考试diagnostic tests回顾性考试tests for retrospective purposes评估性考试assessment tests备考性考试tests in preparative for another test交际性考试communicative tests 基准(常模)参照性考试norm-referenced tests 语用性考试pragmatic tests目标(标准)参照性考试criterion-referenced tests主观性考试subjective tests客观性考试objective tests速度考试speed tests难度考试power tests能力考试ability tests自适性考试adaptive tests大规模考试large-scaled tests小范围考试small-scaled tests公共考试public tests直接性考试direct/performance tests 强制性考试compulsory tests自愿性考试voluntary tests分级考试graded tests升学考试matriculation tests竞赛性考试contest tests标准化考试standardized tests内部考试restricted tests随堂考试classroom tests进度考试progressive tests期中考试mid-term tests期末考试final tests形成性考试formative tests总结性考试summative tests笔试型考试written tests口语型考试oral tests公开考试(开卷考试) open tests或open-book examination。
北师大版初中英语九年级 Unit 5单元测试01试题试卷含答案 答案在前
Unit 5 Literature 单元测试答案解析一、1.【答案】C【解析】此题考查的是形容词。
句意：Kelly是一个有钱的女人，她有很多钱。
rich富有的；poor贫穷的；bored无聊的；wealthy富有的；interesting有趣的。
因此，正确答案是C。
2.【答案】B【解析】此题考查的是同义词。
句意：Lenny不高兴，但他了解他妈妈。
她已经下定决心了，没有什么可说的了。
consider考虑；decide决定；promise许诺；make up one’s mind下定决心。
因此，正确答案是B。
3.【答案】C【解析】此题考查的是动词短语辨析。
句意：下定决心做某事意思就是决定做某事。
give an offer给个报价；make a start开始；make up one’s mind下定决心。
因此，正确答案是C。
4.【答案】A【解析】此题考查的是形容词辨析。
句意：如果你有资格申请这个职位，那就意味着你有资格或有能力做这份工作。
例如，因为你年龄足够大或者你接受了高等教育。
eligible合格的，合适的，符合条件的；flexible 灵活的；replaceable可替换的。
根据qualified可知答案。
因此，正确答案是A。
5.【答案】B【解析】此题考查的是动词辨析。
句意：我们不能再继续装作一切都很好了。
pretend假装；tell告诉；show 表现出，流露；look看。
因此，正确答案是B。
6.【答案】C【解析】此题考查的是固定搭配。
句意：他下定决心要赶上其他同学。
make up one’s mind下决心；决定；brain大脑；idea想法。
因此，正确答案是C。
7.【答案】B【解析】此题考查的是形容词辨析。
句意：—为什么你想成为电影明星？—因为我想变富有并且住在大房子里。
poor贫穷的；rich富有的；strong强壮的；interested感兴趣的。
因此，正确答案是B。
8.【答案】A【解析】此题考查的是固定搭配。
英语final exam
One day ,my roomate asked me a question that if I could go back and live one year of my life over again ,which year would I choose ?I have thinked over this question several times.not because my roomate asked ,just because I want to find out if there is something I regret .And the answer is yes there is. I know I can not change anything .but I just want to talk about it .I took part in the entrance exam for postgraduate school twice and lost both times.It was a lengthy process to prepare for entrance examination ,durning this process I learned a lot from my failure. and I regret for it at the same time . I was easily upset by my boyfriend at that time .I should have pasted the exam but I havenot . it was my fault ,I think that must have let my parents down . and next year I tried it again and lost again. How wish I could control myself to deal with the contradicton between my parents and my boyfriend. Unfortunately, I have not .i lost him and missed him so much . I have ever lost faith in life ,and eventually I have yet conquered this difficulty.i think it is a turning point in my life .Then I met you here ,I love everybody here and thank godness I start my new life ,I appreciate it . Now thinking about the question my roomate asked me , which year I would choose to live it again, I put it frankly that I do not need to live the past time over again, and I know the most important thing is to try my best to do myself and try my best to make decision that I will not feelregret tomorrow. We all wish our life meaningful. We must look forward and that is what I want. That is all ,thank you .。
现代大学英语精读1期末考试真题
现代大学英语精读1期末考试真题Final Exam of Modern College English Reading 1Part I. Vocabulary and Structure (10 points)Directions: There are ten incomplete sentences in this part. Fill in each blank with one word that fits the context best.1. The government has taken new measures to __________ the economy during the pandemic.2. The company’s decision to cut costs has sparked _____ among employees.3. This new technology will undoubtedly _______ how we live and work.4. The m inister’s speech was well-received and widely__________.5. The committee will ________ the proposal before making a decision.6. The team captain’s _______ leadership style motivates his teammates.7. The company’s aggressive expansion strate gy has________ in rapid growth.8. It is vital to _________ a healthy work-life balance to prevent burnout.9. The new regulations will ________ affect how businesses operate in the region.10. The company’s profits have ________ significantly as a result of the global recession.Part II. Reading Comprehension (60 points)Directions: There are four reading passages in this part. Each passage is followed by five questions or unfinished statements. For each of them, there are four choices marked A, B, C, and D. Choose the best answer and mark the corresponding letter with a single bar on your answer sheet.Passage 1According to the passage, what is the main focus of the government’s new measures?A. Improving healthcare servicesB. Boosting the economy during the pandemicC. Implementing stricter lockdown measuresD. Decreasing unemployment ratesWhat was the employees’ reaction to the company’s decision to cut costs?A. SupportiveB. IndifferentC. NegativeD. UncertainHow has the new technology mentioned in the passage impacted our lives?A. It has made life more complicatedB. It has not influenced our lives at allC. It has simplified daily tasksD. It has caused unrest in societyWhy was the minister’s speech well-received?A. It was widely advertisedB. It offered solutions to pressing issuesC. It was a controversial topicD. It was delivered by a famous public figureWhat has the company’s expansion strategy resulted in?A. Stagnant growthB. Decreased profitsC. Rapid growthD. BankruptcyPassage 2What is crucial to prevent burnout according to the passage?A. Regular exerciseB. Maintaining a healthy work-life balanceC. Working overtimeD. Taking frequent vacationsWhat will the new regulations mentioned in the passage affect?A. How businesses operate in the regionB. Employees’ working hoursC. Public transportation servicesD. Tax lawsHow has the region’s economy been impacted by the global recession?A. It has experienced significant growthB. It has remained stableC. It has suffered lossesD. It has become more competitiveWhat has the company’s profits done in response to the recession?A. Increased significantlyB. Stayed the sameC. DecreasedD. FluctuatedWhat is vital for businesses to adapt to changes in the global market?A. Maintaining a competitive edgeB. Ignoring new trendsC. Avoiding innovationD. Relying on outdated strategiesPart III. Practical Writing (30 points)Directions: Write a composition on the following topic. You should write at least 100 words.Topic: The Importance of Continuous Learning in the Modern WorldIn the rapidly evolving world we live in today, the importance of continuous learning cannot be overstated. With technological advancements, market changes, and new discoveries happening at a rapid pace, it is essential for individuals to keep learning and adapting to stay relevant in their fields. Continuous learning not only enhances one’s knowledge and skills but also opens up new opportunities for personal and professional growth. Whether it is through formal education, online courses, workshops, or self-study, investing in continuous learning can lead to a more fulfilling and successful life. Therefore, it is imperative for individuals to embrace a mindset of lifelong learning to thrive in the modern world.This concludes the Modern College English Reading 1 final exam. Thank you for your participation, and good luck!。
Final Exam Topic(2011)
Final Exam Topics (2011)1. a hot topic2.second-hand junk (二手货)3.homosexuality（同性恋）I don't agree,meanwhile,I don't oppose.Most people can't accept it because they used to man an d woman do love.but the standard to judge a thing is good or not,I think,is whe ther it will hurt a nother people or not and he(she) don't think it is not bad in in heart of hearts.as to this topic.i think we should accept it. since you can love a gal or a guy why can't the y , they are also hu man beings.and a friend think it do harm to us, but what did they do or what have they done th at made you or make you uneasy? can you tell me ?now in some west countries people begin to accept it and even goverment makes it legal.by the way what's your opinion of cohabitation?(living together before marriage?)No, I deny homosexuality. It's harm to ordinary people. We should have commonfeeling and love. I don't think homosexuality is good to human being.4.music5.stop smokingcational system in China7.going abroad8.job interviewTips for Job Seekers on Interview QuestionsTips for Job Seekers on Interview Questions. Find out the most common interview questions and answers here.Interview Questions - Tips for Job SeekersAttending job interviews can be intimidating! Being prepared will help you through the experience by increasing confidence, ensuring that you are presenting yourself appropriately and may ultimately bring success in securing the position. The process of interview preparation gives you the opportunity to mentally orient yourself as suitable for a job so that at interview you are already seeing yourself in the role.Researching for Interview QuestionsAn important part of interview preparation is to find out as much as possible about the organisation and the position. Find the company’s website and spend time learning about the organisation. What does the company do? What is its structure? Are there any issues to be aware of? Being able to demonstrate your knowledge will show the interviewers that you have some understanding of the company’s role and position in the market, who its competitors are and any challenges it might be facing.Having a good understanding of the role in question is just as important. This will help you identify your own suitability for the job vacancy and demonstrate this during the interview.Self-Awareness and Interview PreparationBeing aware of your strengths and challenges in an interview situation will help you put your best foot forward on the day. If you are typically a nervous wreck in job interviews, consider how you can support yourself through the process. Instead of rushing to an interview, plan some time to sit somewhere quietly beforeh and to help you get grounded and focus. If nerves aren’t much of a problem but you find it hard to remember examples of your work when asked, focus on these in your interview preparation.Practice, practice, practice! Ask a friend or colleague to help you practice your job interview technique and give you helpful comments. Make sure you choose someone who knows your work and will give honest and constructive feedback.Finally, if you are attending an interview at a company at which you already work, be care ful not to undersell yourself. Never assume that the interviewers already know all about you; it can be helpful to try to forget you know them and answer interview questions accordingly.Common Interview Questions and AnswersTypically there are 3 types of job interview questions. General exploratory questions are often used at the start of an interview, aimed at relaxing you and getting to know you a little. Designed to focus on how you function in a role, behavioural interview questions are generally probing and focus on your past approaches and look for how you might fit the company. The third type are situational interview questions. These are typically designed around real or hypothetical situations applicable to the job vacancy. Following are the 5 most common interview questions and answers to help you in your interview preparation.T ell us about yourselfOften the first question asked, this is a great opportunity to make a positive first impression. Make sure you mention your expertise and strengths, how your career has developed and where you want to head now - relating this to the job vacancy of course. Be brief and concise; don’t get carried away and give them your life story.Why have you applied for this job?Talk about why the company interests you - perhaps you’re passionate about the services it provides - and how the role matches your professional interests and experience. Values are a big thing with organisations these days so make sure you’ve checked for a values statement on their website an d can talk about how they fit with your own.What is your understanding of the company?Remember your interview question research? Use it to talk about what the company does, why it exists and where it sits in the market. Maybe the company is facing some challenges or might even be in the media; this interview question is a chance to demonstrate your knowledge.What are your strengths and weaknesses?Your interview preparation will have given you an understanding of what the company is seeking, so make sure you are ready to match your skills and knowledge to their needs. As far as weaknesses go, it is perfectly ok to talk about these, as long as you don’t mention anything listed in the selection criteria. A good way of describing a weakness is to talk about what you have done to manage it e.g. you have had to learn when to step back from your tendency to be a perfectionist.Where do you see yourself in 5 years?Most people dislike this interview question because often the real answer is ‘I don’t know’. One wa y of dealing with it is to talk about how you would like to be experiencing the workplace, i.e. feeling valued, making a real contribution, developing and using your skills and knowledge.And Finally…Always when answering interview questions, keep in mind that you need to promote yourself for the position. Make sure that you tie each of your answers back to your skills and motivation and demonstrate how you are the right fit for the organisation.Good luck!9.high scores, low abilityHigh Test Scores, Low AbilityYong Zhao is the University Distinguished Professor in the College of Education at Michigan State University. The author of "Catching Up o r Leading the Way: American Education in the Age of Globalization," he often blogs abo ut educatio n issues.Updated December 4, 2010, 12:53 AMThere's a frustrating paradox in Chinese educatio n. On the one hand, millions of co llege graduates canno t find a job -- at least a desirable job that pay s substantially mo re than what a migrant wo rker makes. On the other hand, businesses that want to pay a lo t mo re can't seem to find qualified emplo y ees.A McKinsey stu dy fo und that fewer than 10 percent of Chinese graduates are co nsidered suitable to work at multinationalcompanies based in C hina.Multinational co mpanies in China are having a difficult time finding qualified candidates fo r their positio ns. Acco rding to a recent survey of U.S.-owned enterprises conducted b y the American Chamber of Commerce in Shanghai, 37 percent of the co mpanies that responded said that finding talent was their biggest operational problem. A separate study by McKinsey Quarterly found that 44 percent of the executives in Chinese companies repo rted that insufficient talent was the biggest barrier to their global ambitio ns.The explanation: a test-o riented educational enviro nment.China invented the keju system, which used tests to select go vernment officials. It was a great inventio n because it enabled talents fro m across the society to join the ruling class regardless of their family backgro unds. Hence, a great meritocracy co uld be created. But it ev o lved into a nightmare fo r China as the system gradually changed into one that tested memo rizatio n of Confucian classics.Associated Press Teachers sortingcollege entrance exams in Chengdu, Sichuan Province, in June 2009.Keju is dead no w but its spirit is very alive in China today, in the fo rm of gaokao, o r the College Entrance Exam. I t's the only exam that matters since it determines whether students can attend college and whatkind of co lleges they can attend. Because of its life-determining nature, gaokao has beco me the “bato n” that co nducts the who le educatio n orchestra. Students, parents, teachers, school leaders and even local go vernment officials all wo rk to gether to get good scores. From a very yo ung age, children are rel ieved of any other burden or deprived of opportunity to do anything else so they can focus on getting good scores.The result is that Chinese college graduates often have high sco res but lo w ability. Those who are good at taking tests go to college, which also emphasizes book kno wledge. But when the y graduate, they find out that emplo yers actually want much mo re than test sco res. That is why another study by McKinsey found that fewer than 10 percent of Chinese college graduates wo uld be suitable fo r work in foreign co mpanies.Chinese educators are well aware of the problems with the gaokao system and have been trying to mo v e away fro m the excessive focus o n testing. But seeking other valid indicato rs of stro ng academic records will take time, especially in a co untry of 1.3 billion people.10.t he most important quality of human beings11.f ashion12.C ampus love13.e ntertainment14.c omputer games15.e quality between man and woman16.s hopping and window shopping17.p ollution18.p art-time jobs19.B ig fish in a small pond or small fish n a big pond?20.i nternet love21.I s childhood the happiest time of your life? Why or why not?22.r aising pets23.c apital punishment/ death penalty （死刑）24.p rivate cars25.t he things people are interested in today are26.C an men and women be good friends?27.e arthquake28.t he problems of modern life29.j obs and career30.What do you regard as the most significant events in your country'srecent history?。
大一英语期末考试作文
大一英语期末考试作文As the final exam of my first year English course is approaching, I find myself reflecting on the progress I have made over the past semester. It has been a challenging yet rewarding experience, and I believe that I have grown not only in my language skills, but also in my ability to think critically and express myself effectively.One of the most important aspects of the English course has been the development of my writing skills. Through various assignments and exercises, I have learned how to structure my ideas coherently, use appropriate vocabulary and grammar, and present my arguments persuasively. These skills will undoubtedly be put to the test in the upcoming final exam, where I will be required to write an essay on a given topic.In preparation for the exam, I have been reviewing the different types of essay formats and practicing how to organize my thoughts within a limited time frame. I have also been expanding my vocabulary and familiarizing myself with various idiomatic expressions that can enhance the quality of my writing. Additionally, I have been paying close attention to the feedback and suggestions provided by my instructor on previous assignments, in order to identify areas for improvement and refine my writing style.The essay portion of the final exam will be a crucial opportunity for me to demonstrate my understanding of the course material and showcase my ability to articulate my thoughts in a clear and concise manner. I am determined to apply all that I have learned throughout the semester and to approach the exam with confidence and composure.In conclusion, the English course has been an enriching experience that has equipped me with valuable writing skills and a deeper appreciation for the nuances of the English language. I am looking forward to the challenge of the final exam, and I am committed to putting forth my best effort in crafting a compelling and well-structured essay. I am confident that with diligent preparation and a focused mindset, I will be able to excel in the exam and demonstrate the progress I have made as a writer and a student of English.。
FinalExam1
Final Exam 1（总分：100分答卷时间：40分钟）听力部分（34分）一、听录音，选出你所听到的内容。
（8分）( )1. A. tiger B. lion C. cat( )2. A. pineapple B. mango C. grape( )3. A.13 B. 17 C. 19( )4. A. basketball B. football C. table tennis( )5. A. jump B. swim C. skate( )6. A. hamburger B. noodles C. sandwich( )7. A. bedroom B. living room C. bathroom( )8. A. hair B. nose C. mouth二、听录音，判断下列各图是否与录音内容相符，相符的画“☺”，不相符的画“☹”。
（8分）1. 2.3. 4.5. 6.7. 8.¥ 13 yuan三、听录音，选择恰当的应答。
（10分）( )1. A. I am ten. B. I have ten. C. I like toys. ( )2. A. I like pies. B. I’d like a pie. C. Yes, I do. ( )3. A. Yes, I can. B. Yes, I do. C. Yes, I can’t. ( )4. A. It’s a clock. B. Yes, it is. C. It’s on the fridge. ( )5. A. It’s 20 yuan. B. They’re 20 yuan. C. I have two. 四、听录音，将下列对话补充完整。
（8分）A: Do you like _______?B: ________, I do. Oh, ________ hungry.A: It’s ________ o’clock. It’s time for ________.B: Would you like some ________?A: No.B: ________ would you like?A: Some ________, please.笔试部分（66分）五、判断单词划线部分读音是否相同，相同的打“√”，不同的打“×”。
Chinese Final Exam
Skema B1 ExaminationI. Dictation（10’+8’=18’）（1~10:1’一个; 9~12: 2’一句)（阅卷老师请自行转换成拼音进行批改）1. 左 2 . 酸 3. 头 4. 等 5.电话6. 喝水7. 小时8. 上车9. 地铁10.右边11. 麻烦您了。
12. 在这儿停一下。
13. 有没有感冒药？14. 我忘了带钥匙。
II.Write Chinese Characters （5’）人也下大不III.Write Pinyin.（5’）xiǎo zài le Zhōng gu ó（中国首字母不大写，可不扣分，一个字一分）IV. Multiple choice （1.5’*10=18’）1 B2 C3 A4 C5 D6 C7 B8 D9 A 10.C11 B 12.DV. Choose the right Measure Word （6’）1. E2. D3.A4. F5.C6.BVI. Read and match (Put your option in the brackets).(6’)1. C2. F3.D4.B5.A6.EVII. Ask question according to the underlined parts in the sentences below. (12’) （阅卷老师请自行转换成拼音进行批改）1、他叫什么（名字）？2、面包多少钱一个？/面包一个多少钱？3、你要几瓶水？4、今天几月几号？5、去饭店怎么走？6、现在几点？VIII. Reorganize the following words into sentences (10’) （阅卷老师请自行转换成拼音进行批改）1、您要吃什么主食？2、我们在教室上课。
3、请帮我开一下门。
4、附近有洗手间吗？5、从邮局去网吧怎么坐车？（从网吧去邮局怎么坐车？）plete the dialogs. (11’)（阅卷老师请自行转换成拼音进行批改）桔子甜吗？2’桔子多少钱一斤（桔子怎么卖？）2’在哪儿可以换钱？2’要！1’去银行怎么走？（银行在哪儿？）2’不客气。
Final Exam (part I) (英语试卷的参考答案)
Biochemistry Test （part one）Name Student ID ScoreI I Matching Questions (30 x 1 = 30)1.Some inverted repeat sequences or palindromic sequences can be specifically cleaved by ____11A_________.2.The process by which very different evolutionary pathways lead to a protein with similar function is referred to as__2B___ evolution.3.Under normal conditions, the iron of heme in myoglobin and hemoglobin is in the ___16D____ oxidation state.4.Carbon dioxide reacts with the amino terminal groups of hemoglobin to form carbamate groups, which carry a___10D___ charge.5.In normal adult hemoglobin, HbA, the β6 position is a glutamate residue, whereas in sickle-cell hemoglobin, HbS, itis a __7E___ residue.6.The T-state of hemoglobin is stabilized by a salt bridge between β1 Asp 94 and the C-terminal ____7B____ of the β1chain.7.In trypsin, the specificity pocket contains a/an ____7D____ residue that binds to amino acid residue carryingpositive charge of the substrate.8.In proteases such as papain, a _____7A___ residue is activated by hydrogen-bonding to a histidine residue.9.Multiple forms of homologous enzymes within the same organism that catalyze the same reaction but with differentkinetic properties are ____14A____.10.The effects of substrates on allosteric enzymes are referred to as _____9D_____ effects.11.___9A___ is the most common donor molecule in phosphorylation reactions catalyzed by protein kinases.12.α helices, β sheets, and turns are referred as__10B___ structure of proteins.13.The purification based on the attraction of the protein for a particular chemical group is ___3C__ chromatography.14.The information-carrying intermediates for translation are _17C_.15.The person who noted the A:T and G:C ratios in DNA are approximately 1:1 is _13C_.16.Codons that specify the same amino acids are termed __4A__.17. A pattern of DNA fragments by restriction digestions can serve as a _12E of a particular DNA molecule.18.Glutamine substitution with __6E__ is an example of a conservative amino acid change.19.The decreased production of one of the subunits of hemoglobin can cause _2D__.20.Two α chains and two γ chains are used to constitute ___11E___ hemoglobin.21.The k cat is often referred to as the _6A__.22.Enzymes that do not obey Michaelis-Menten kinetics are _14C__.23.The activity of carbonic anhydrase requires metal ion __15D__.24.We can use __18A___ to determine structure/function relationships in enzymes.25.We usually refer the inhibition of the first step by the final product of the pathway as__5D__inhibition.26.Activation of prothrombin requires modified amino acid __8A__ in gla domain.27.The enzyme used to create DNA from RNA is 16A .28.Removal of phosphates from proteins is catalyzed by protein __1E__.29.Ω, β turns and loops are often found on 4E of proteins.30.Blood clotting cascades are controlled by __1A_.III Fill in the Blanks (2 x 10 = 20)1. The aromatic amino acids in proteins are Phe, Tyr, and Trp .2. During protein purification, both 测定比活性和回收率 are necessary each step.3. Monoclonal antibodies are made by 生产抗体的B 细胞与小鼠骨髓瘤细胞融合 .4. Semi-conservative replication of DNA was confirmed by M. Meselson and F. W. Stahlexperiment(s). 5.Distal histidine in hemoglobin donates hydrogen bond to oxyhemoglobin complex, which inhibits the oxidation of the iron to the ferric state. 6.α-hemoglobin is stabilized by AHSP . 7.The meaning of Vmax catalyzed by an enzyme is 所有活性位点都与底物结合时的反应初速度 . 8.An affinity label of an enzyme is 有反应活性基团的底物类似物 . 9.The central amino acid residue of the catalytic triad in chymotrypsin is His . 10. For medical diagnosis, LDH 同工酶 can be used as heart attack indicators.IV Short-Answer Questions （5 x 6 = 30）1. Oxygen-binding curves by hemoglobin are shown in Fig 1, which indicates that O 2 affinity of the protein isregulated by O 2, pH, CO 2, and 2,3-bisphosphate glycerol. Propose the molecular mechanisms to interpret theoxygen-binding curves with the knowledge you have learnt in class.2. Briefly describe immunoassay in Biochemistry.3. A 10 kb DNA fragment digested with different restriction endonuclease(s) shown in Fig 2. Please draw a possiblerestriction map for the original fragment.4. Describe structural alternation when the peptide bond between amino acid residues 15 and 16 is cleaved.5. How to create high density arrays of oligonucleotides in Affymatrix Co? What can be done if we use such arrays?Fig 1. Oxygen-binding curves of hemoglobin.Fig 2. Analysis of a DNA fragment by restriction enzymes.III Fill in the Blanks1.2.3.4.5.6.7.8.9.10.IV Short-answer questions1 氧气与血红蛋白结合是正协同，呈S型曲线；CO2是血红蛋白的负调节剂，有助于血红蛋白T态结构；使S型曲线右移；2,3-BPG能够与T态血红蛋白结合，稳定T-态结构；CO2和2,3-BPG 同时存在，负别构调节作用更强，S曲线进一步右移。