2020版译林英语高二选修七Unit 4能力提升题组训练卷附答案解析
-1-2020版译林英语高二选修七Unit4能力提升题组训练卷
Ⅰ.阅读理解
A
Supposeyoudon’tneedyourcartoday.Andsuppose,asithappensthatastrangerinyour
areadoesneedacar.Wouldyoubewillingtorentyoursout?
Severalcar-sharingstart-ups,includingGetaround,RelayRidesandJustShareIt,are
eagertoconnectcarownerswithrentersthisway.Thecompanieshavedifferentrules,but
participatingownersreceive,generallyspeaking,abouttwo-thirdsoftherental
earnings.RelayRidessaysanownerofamid-size,late-modelsedanwhorentsoutacarfor
10hoursaweekcouldexpecttoclearabout$3,000ayear.
Peer-to-peercar-sharingremainsinthetrialstage;itcanbefoundinSanFrancisco
andafewotherplaces.Ithasalongwaytogobeforeitbecomestheautoequivalentof
Airbnb,thesurprisesuccessstoryforpeer-to-peersharingofspaceinapartmentsandhouses.
ShelbyClark,founderofRelayRides,sayspotentialinvestorsinhiscompanyhavebeen
concernedthatownerswillbeafraidtohandtheircarovertostrangers.Toaddressthat,he
pointstoAirbnb,saying,“Lettingpeoplesleepinyourlivingroomismuchmoreofa
disturbanceintoyourpersonalspacethanlettingsomeoneuseyourcar.”
Allofthesecompaniesoffertheirowninsurancecoveragefortheirrenters,whichare
supposedtoputowners’mindsatease.Butonlytwostates—CaliforniaandOregon—have
passedlawstoclarifythatanownerwillnotsufferanyconsequencesshouldacar-sharing
renterhaveanaccident.
“Inalltheotherstates,legalambiguityremains,”ShelbyClarksays.“Ifarentershould
beinvolvedinaseriousaccidentinthosestates,thevictimcanbeexpectedtogoafter
everypartypossible,includingthecar’sowner.”
Alsotoremovetheworriesofcarowners,thedrivingrecordsofrentersarecheckedfor
recentseriousviolations.
1.Whatdoestheunderlinedword“sedan”inParagraph2probablyreferto?
A.Akindofcar.B.Anownerofacar.
C.Arentingcompany.D.Acar-sharingrenter.
2.WhichofthefollowingisTRUEofAirbnb?
A.Itcareslittleaboutpersonalprivacy.
B.Itdealswithhouse-sharingsuccessfully.
C.Itisaverypopularcar-sharingcompany.
D.Itsideasarebeingtriedoutinsomestates.
3.Ifacar-sharingrentershouldhaveanaccidentinCalifornia,thecar’sowner.
A.hastotakelegalresponsibility
B.willnotsuffertheconsequence
C.isnotcoveredbyhealthinsurance
-2-D.mustpaytheinsurancefortherenter
语篇解读:本文是说明文,介绍了美国兴起的一个共同使用小汽车的新兴行业。
答案及剖析:
1.A词义猜测题。根据画线词前面的“anownerofamid-size,late-model”及画线词后面的“who
rentsoutacar”可推知,这里指的是“一种中型、新型的小汽车”,故选A。
2.B细节理解题。根据文章第三段中的“beforeitbecomestheautoequivalentofAirbnb,the
surprisesuccessstoryforpeer-to-peersharingofspaceinapartmentsandhouses”可
知,Airbnb是一家成功进行房屋共享的公司,故选B。
3.B细节理解题。根据文章第五段中的“Butonlytwostates—CaliforniaandOregon—have
passedlawstoclarifythatanownerwillnotsufferanyconsequencesshouldacar-sharing
renterhaveanaccident.”可知,在California和Oregon两个州,如果租用者出了事故,车主是不
会受到任何影响的,故选B。
B
OnoneofhertripstoNewYorkseveralyearsago,EudoraWeltydecidedtotakeacouple
ofNewYorkfriendsouttodinner.TheysettledinatacomfortableEastSidecafeandwithin
minutes,anothercustomerwasapproachingtheirtable.
“Hey,aren’tyoufromMississippi?”theelegant,white-hairedwriterrememberedbeing
askedbythestranger.“I’mfromMississippitoo.”
Withoutasecondthought,thewomanjoinedtheWeltyparty.Whenherdinnerpartnershowed
up,shealsopulledupachair.
“TheybegantellingmeallthenewsofMississippi,”Weltysaid.“Ididn’tknowwhat
myNewYorkfriendswerethinking.”
TaxisonarainyNewYorknightarerarerthansunshine.Bythetimethegroupgotup
toleave,itwaspouringoutside.Welty’snewfriendsimmediatelysentawaitertofinda
cab.Headingbackdowntowntowardherhotel,herbig-cityfriendswereamazedattheturnof
eventsthathadchangedtheirBigAppledinnerintoaMississippistatereunion(团聚).
“Myfriendsaid:‘Nowwebelieveyourstories,’”Weltyadded.“AndIsaid:‘Nowyou
know.Thesearethepeoplethatmakemewritethem.’”
Sittingonasofainherroom,Welty,aslimfigureinasimplegraydress,lookedpleased
withthisexplanation.
“Idon’tmakethemup,”shesaidofthecharactersinherfictiontheselast50or
soyears.“Idon’thaveto.”
Beauticians,bartenders,pianoplayersandpeoplewithpurplehats,Welty’speoplecome
fromafternoonsspentvisitingwitholdfriends,fromwalksthroughthestreetsofhernative
Jackson,Miss.,fromconversationsoverheardonabus.ItannoysWeltythat,at78,herleftear
hasnowgivenout.Sometimes,sittingonabusoratrain,shehearsonlyafragment(片断)of
aparticularlyinterestingstory.
4.WhathappenedwhenWeltywaswithherfriendsatthecafe?
A.Twostrangersjoinedher.B.Herchildhoodfriendscamein.
C.Aheavyrainruinedthedinner.D.Somepeopleheldapartythere.
-3-5.Theunderlinedword“them”inParagraph6referstoWelty’s.
A.readersB.partiesC.friendsD.stories
6.WhatcanwelearnaboutthecharactersinWelty’sfiction?
A.Theyliveinbigcities.B.Theyaremostlywomen.
C.Theycomefromreallife.D.Theyarepleasureseekers.
语篇解读:这是一篇记叙文。Welty根据亲身经历和现实生活中的有趣故事创作小说。许许多多的真
人真事成了Welty笔下的材料。
答案及剖析:
4.A细节理解题。由文章第二段和第三段内容可知,有两个陌生人加入到了Welty在咖啡馆里组成的
聚会。一个是stranger,另一个是herdinnerpartner。
5.D猜测指代题。从第六段的“Myfriendsaid:‘Nowwebelieveyourstories,’”和Theseare
2020全国化学高考新考案第十二单元(选修5)综合训练卷附答案
12020全国化学高考新考案第十二单元选修5《有机化学基础》
综合训练卷
1.环丁基甲酸()是有机合成中一种重要的中间体。实验室以链状分子A为原料合成环丁基甲酸的路线如下:
已知:
+2RBr+2HBr;
。
请回答下列问题:
(1)化合物A的化学名称是,由A生成B的反应类型是。
(2)化合物B中所含官能团的名称为。
(3)化合物C和D反应所形成高聚物的结构简式是。
(4)写出E+FG的化学方程式:。
(5)X是环丁基甲酸的同分异构体,能与饱和碳酸氢钠溶液反应放出气体,且能使溴水褪色,X的结构共有
种;其中核磁共振氢谱为三组峰,峰面积比为6∶1∶1的结构简式为。
(6)写出以1,3-丁二烯和化合物F为原料制备环戊基甲酸的合成路线(其他试剂任选)。
【解析】根据流程图,链状分子A(C
3H
4O)与水反应生成B(C
3H
6O
2),发生了加成反应,说明A中含有碳
碳双键,则A的结构简式为CH2CHCHO,A的化学名称为丙烯醛;B发生氧化反应生成D,D与乙醇在酸性
溶液中发生酯化反应生成F,根据F的化学式可知D为二元羧酸,则D为HOOCCH
2COOH,B为HOCH
2CH
2CHO,F
为CH
3CH
2OOCCH
2COOCH
2CH
3;B与氢气发生还原反应生成C,C与HBr反应生成二溴代烃,则C为二元醇,C为
2HOCH2CH2CH2OH,E为BrCH2CH2CH2Br,根据信息,E和F反应生成G,G
为,G水解生成H,H为
,根据信息,H受热脱去一个羧基生成环丁基甲酸。
(5)X是环丁基甲酸()的同分异构体,能与饱和碳酸氢钠溶液反应放出气体,说明含有羧基;
能使溴水褪色,说明含有碳碳双键,因此满足条件的X有、、、、、、、,共8种,其中核磁共振氢
谱为3组峰,峰面积比为6∶1∶1的为(CH
3)
2CCHCOOH。
【答案】(1)丙烯醛(或2-丙烯醛)加成反应
(2)醛基、羟基
(3)
(4)C
2H
5+Br(CH
2)
3
Br+2HBr
(5)8(CH
3)
2CCHCOOH(6)
8.1二元一次方程组-2020-2021学年人教版七年级数学下册专题复习提升训练(机构)
专题复习提升训练卷8.1二元一次方程组-20-21人教版七年级数学下册
一、选择题
1、下列等式:①2x+y=4;②3xy=7;③x2+2y=0;④x12=y;⑤2x+y+z=1,二元一次方程的个数是( )
A.1 B.2 C.3 D.4
2、若myx2是方程nx+6y=4的一个解,则代数式3m﹣n+1的值是( )
A.3 B.2 C.1 D.﹣1
3、已知方程3x+y=5,用含x的代数式表示y( )
A.x=5﹣y B.y=3x﹣5 C.y=5﹣3x D.y=5+3x
4、若(a﹣1)x|a|﹣1+3y=1是关于x、y的二元一次方程,则a=( )
A.1 B.2 C.﹣2 D.2和﹣2
5、下列方程组中,是二元一次方程组的是( )
A.26235xyyz B.1221xyxy C.425xyxy D.43xyxy
6、下列各组数中①22xy; ②21xy;③22xy;④16xy是方程410xy的解的有( )
A.1个 B.2个 C.3个 D.4个
7、下列某个方程与x﹣y=3组成方程组的解为12yx,则这个方程是( )
A.3x﹣4y=10 B.3221yx C.x+3y=2 D.2(x﹣y)=6y
8、二元一次方程3x+2y=13正整数解的个数是( )
A.1个 B.2个 C.3个 D.无数个
9、若12xy,是关于x和y的二元一次方程3mxny的解,则24mn的值等于( ) A.3 B.6 C.1 D.2
10、《九章算术》中记载:“今有上禾三秉,益实六斗,当下禾十秉;下禾五秉,益实一斗,当上禾二秉.问上、下禾实一秉各几何?”其大意是:今有上等稻子三捆,若打出来的谷子再加六斗,则相当于十捆下等稻子打出来的谷子;有下等稻子五捆,若打出来的谷子再加一斗,则相当于两捆上等稻子打出来的谷子.问上等、下等稻子每捆打多少斗谷子?设上等稻子每捆打x斗谷子,下等稻子每捆打y斗谷子,根据题意可列方程组为( )
2021-2022学年人教版初中数学七年级下册第八章二元一次方程组同步训练试卷(含答案详细解析)
初中数学七年级下册第八章二元一次方程组同步训练
(2021-2022学年 考试时间:90分钟,总分100分)
班级:__________ 姓名:__________ 总分:__________
题号 一 二 三
得分
一、单选题(10小题,每小题3分,共计30分)
1、如图,9个大小、形状完全相同的小长方形,组成了一个周长为46的大长方形ABCD,若设小长方形的长为x,宽为y,则可列方程为( )
A.27,2746xyyxy B.27,746xyyxy
C.27,2746xyxxy D.72,746xyxxy
2、二元一次方程324xy的解可以是( )
A.2,1xy B.3,2xy C.1,1xy D.3,4xy
3、若关于x,y的二元一次方程组32129xykxy的解互为相反数,则k的值是( ) A.4 B.3 C.2 D.1
4、下列各式中是二元一次方程的是( )
A.2327xy B.25xy C.123yx D.234xy
5、用加减法解方程组336xyxy①②由②-①消去未知数y,所得到的一元一次方程是( )
A.29x B.23x C.49x D.43x
6、已知23xy是方程22kxy的解,则k的值为( )
A.﹣2 B.2 C.4 D.﹣4
7、下列各组数值是二元一次方程2x﹣y=5的解是( )
A.21xy B.05xy C.15xy D.31xy
8、已知方程组242xyxyk的解满足1xy,则k的值为( )
A.7 B.7 C.1 D.1
2022-2023学年度人教版生物七年级上册第二单元 生物体的结构层次综合训练试卷(含答案解析)
人教版生物七年级上册第二单元 生物体的结构层次综合训练
考试时间:90分钟;命题人:教研组
考生注意:
1、本卷分第I卷(选择题)和第Ⅱ卷(非选择题)两部分,满分100分,考试时间90分钟
2、答卷前,考生务必用0.5毫米黑色签字笔将自己的姓名、班级填写在试卷规定位置上
3、答案必须写在试卷各个题目指定区域内相应的位置,如需改动,先划掉原来的答案,然后再写上新的答案;不准使用涂改液、胶带纸、修正带,不按以上要求作答的答案无效。
第I卷(选择题 40分)
一、单选题(10小题,每小题4分,共计40分)
1、我们吃的藕和桃子,分别属于植物的( )
A.根和果实 B.种子和茎 C.根和种子 D.茎和果实
2、某同学使用的显微镜有如下一些镜头可供选择(见图),要使被观察的物体放大50倍,应选择的镜头为( )
A.④和⑤ B.③和⑥ C.①和④ D.②和⑥
3、下表是显微镜使用过程中要达到的目的和所采用的操作,其中能达到目的操作的是( )
选项 目的 操作
A 调节光线强弱 转动转换器
B 换成高倍镜 转动细准焦螺旋 C 使物像更清晰 转动反光镜和遮光器
D 将偏在左下方的物像移到视野中央 将玻片标本向左下方移动
A.A B.B C.C D.D
4、草履虫和番茄都是生物,它们进行生命活动的基本单位是( )
A.系统 B.细胞 C.器官 D.细胞质
5、生物体内的遗传信息主要储存在( )
A.细胞壁内的纤维素中 B.细胞膜内的蛋白质中
C.细胞质内的糖类物质中 D.细胞核内的DNA中
6、使用显微镜时,错误的是( )
A.对光是要看到白亮的视野 B.观察时左眼看着目镜 ,右眼睁开,便于画图
C.下降镜筒时眼睛注视目镜 D.当光线较暗时,用反光镜的凹面来对光
7、小雨使用显微镜观察细胞时,目镜放大倍数是16×,物镜放大倍数是10×,则细胞被放大了
A.10倍 B.26倍 C.100倍 D.160倍
高二英语北师大版选修六:课时卷4 含解析
Unit 16 课下能力提升(四)
Ⅰ.单词拼写
1.Today we will ________ (呈现) six classic English dramas.
2.She goes home late every day ________ (故意地) in order to attract her parents' attention.
3.We offer free technical support for those buying our ________ (软件).
4.Please ________ (查阅) to my blue answers in the form.
5.“Well done!” he said ________ (拍打) me on the back.
Ⅱ.单句语法填空
1.When I was in danger, a bright idea suddenly occurred ________ me.
2.This morning traffic was held ________ by an accident outside the town hall.
3.The government work report covers a variety of issues, and social justice ________
particular.
4.They really have a great time, designing everything, drawing the blueprints, figuring
________ the angles (角度) and so on.
5.Surely it doesn't matter where the student associations get their money from; what
2019-2020学年人教版英语选修六Unit5_SectionⅠ习题有答案-(高二)加精
////
//// Unit5 Thepowerofnature
SectionⅠ—WarmingUp,Pre-reading,
Reading&Comprehending
一、根据句意和汉语提示写出单词
1Mr.Lee was
(任命)as headmaster at the beginning of the school year.
答案:appointed
2He (挥手) happily to his companion.
答案:waved
3The high official explained (完全地) clearly what had happened to the reporters
from all over the world.
答案:absolutely
4We should encourage all the children to develop their
(潜在的) abilities.
答案:potential
5The (实际的) cause of the quake is the breaking of rocks at or below the earth’s surface.
答案:actual
二、用下列词组或单词的正确形式完成句子
be about to
compare...with...
fast asleep
make one’s way to
potential equipment absolutely
be appointed as burn to the ground
out of the way
1You’d better often your handwriting
others’.
答案:compare;with
2A chemistry factory
高二英语人教版选修六练习Unit4单元质量检测(四)
单元质量检测(四)
(时间:100分钟 满分:120分)
Ⅰ.阅读理解(共15小题;每小题2分,满分30分)
阅读下列短文,从每题所给的A、B、C和D四个选项中,选出最佳选项。
A
Eco-friendly Car Racer
Can you image a car racer is so eco-friendly that its tyres are made from potatoes, its body is
created from hemp (大麻) and rapeseed oil and it runs on fuel made from wheat and sugar beet?
The one-seater racing car called Eco One is built by experts from Warwick University, who hope
that Eco One will be adopted by the automotive industry. It is sold at £41,000.
Pollution-sensitive Dress
Don’ t be caught outside unaware of pollution levels in the air. The pollution-sensitive EPA
Dress by Stephanie Sandstrom notices pollution in the air accordingly. This dress — which is
actually quite pretty — looks like you pull it from the bottom of the dirty laundry pile when the air
is dirty. It might protect your health by advising you to stay indoors for the day, but it won’ t do
2014高考英语全程复习方略 课时提升作业二十六:Unit3 The world of colours and light(牛津译林版选修8)
1 温馨提示:
此套题为Word版,请按住Ctrl,滑动鼠标滚轴,调节合适的观看比例,答案解析附后。关闭Word文档返回原板块。
课时提升作业(二十六)
选修8 Unit 3
Ⅰ. 单项填空
1. (2013·济南模拟)Universities have to provide for first-year
students.
A. adjustment B. qualification
C. commitment D. accommodation
2. His early works, mostly in the traditional Chinese style, reflected the
of eastern China.
A. sight B. scenery C. view D. scene
3. Unfortunately, although Van Gogh his whole being to painting,
he received little reward for his effort.
A. admitted B. permitted
C. submitted D. committed
4. Someone has upset the photographs I so carefully, which made
me quite angry.
A. laid off B. laid out
C. laid down D. laid aside 2 5. There was a expression on the child’s face when he saw the
scene.
A. disgusting; disgusting B. disgusted; disgusting
高中英语译林版选修8课下能力提升:Unit2六含答案.doc
Unit 2 课下能力提升(六)
Ⅰ.单句语法填空
1.________ struck me that I had left my purse in the car.
2.In my view, you deserve ________ (praise) for what you have done for us.
3.I'd like to take this opportunity ________ (apply) for my dream job.
4.Let's split ________ now and meet again at lunchtime.
5.We encourage students to participate fully ________ the running of the college.
6.Put ________ your hand if you have a question.
Ⅱ.完成句子
1.他们于星期一举行罢工,要求增加百分之三十的工资。
They ________________ on Monday in demand of a 30 percent wage increase.
2.你触犯了法律,理应受到惩罚。
You've broken the law and __________________________________________________.
3.我想借此机会祝你旅途顺利。
I'd like ____________________ you a good trip.
4.新英格兰和加拿大城镇的学生们正参加一场国际性的节能比赛。
The students ______________________ between towns in New England and Canada.
5.汤姆的父母离婚了,这使他感到如此伤心和孤独。
青岛版2020八年级数学上册第四章数据分析单元综合基础过关测试卷A(附答案详解)
青岛版2020八年级数学上册第四章数据分析单元综合基础过关测试卷A(附答案详解)
1.某班30名学生的身高情况如下表:
则这30名学生身高的众数和中位数分别是( ).
A. B. C. D.
2.为了了解阳光居民小区“全民健身”活动的开展情况,某志愿者随机调查了该小区50名成年居民一周的体育锻炼时间,并将数据进行整理后绘制成如图所示的统计图,则这50人一周体育锻炼时间的众数是( )
A.6小时 B.20人 C.10小时 D.3人
3.若一组数据2,4,6,a,b的平均数是10,则a,b的平均数是( )
A.20 B.19 C.15 D.14
4.甲、乙、丙、丁4对经过5轮选拔,平均分都相同,而方差依次为0.2、0.8、1.6、1.2.那么这4队中成绩最稳定的是( )
A.甲队 B.乙队 C.丙队 D.丁队
5.下列调查中,你认为选择调查方式最合适的是( )
A.了解合肥市七年级学生的身高情况,采用抽样调查方式
B.了解端午节期间市场粽子质量情况,采用全面调查方式
C.合肥新桥机场旅客上飞机进行安检,采用抽样调查方式
D.检测一批日光灯管的使用寿命情况,采用全面调查方式
6.长春市某服装店销售夏季T恤衫,试销期间对4种款式T恤衫的销售量统计如下表:
款式 A B C D
销售量/件 1 8 5 1
该店老板如果想要了解哪种款式的销售量最大,那么他应关注的统计量是( )
A.平均数 B.众数 C.中位数 D.方差
7.袁隆平院士是中国杂交水稻育种专家,中国研究与发展杂交水稻的开创者,被誉为“世界杂交水稻之父”,他研究的水稻,不仅高产,而且抗倒伏.某村引进了袁隆平的甲乙两种水稻良种,各选6块条件相同的试验田,同时播种并核定亩产,结果甲、乙两种水稻的平均产量均为1100kg/亩,方差分别为S甲2=141.7,S乙2=433.3,则产量稳定,适合推广的品种为( )
