新教材外研版高中英语选择性必修第二册Unit5 A delicate world 课时练习及单元测验

Unit5Adelicateworld课时练习及单元测验

课时分层作业1........................................................................................................................-i-

课时分层作业2......................................................................................................................-6-

课时分层作业3......................................................................................................................-9-

单元综合检测...........................................................-14-

课时分层作业1

I.单词拼写

1.Asweallknow,rabbitsmultiplyrapidly.

2.Donotblameyourfoodbecauseyouhavenoappetite.

3.HermothermovedtoShijiazhuangsubsequently（随后）.

4.HowmuchdoIoweyouforthegroceries?

5.Howdoyouevaluatetheimpactofthisincident（事件）?

6.Thegovernorcalledforaninquiryintothemotorway'scollapse一到塌）.

7.Thesecondhalfofthegamewasdullbycomparison比较）withthefirst.

8.Theyhadreceivednonewsofhimsincehisdeparturefromtheisland.

9.Hehadfallenintoatrapsetbyoneofthehunters.

10.Heavysnowhascausedtotalchaos（混舌L）ontheroads,

n.阅读理解

A

Idon'tthinkIcanrecallatimewhenIwasn'tawareofthebeautyoftheocean.Growingupin

Australia,Ihadthegoodfortuneofhavingtheseaatmyside.ThefirsttimeIwenttoHalfmoonBay.

Isuddenlyhadthefeelingofnotbeingabletofeelthegroundwithmyfeetanymore.

Formy10thbirthday,mysisterandIweretakenouttotheGreatBarrierReef.Therewerefish

indifferentcolors,cavesandlayersofcoral.Theymadesuchanimpressiononme.WhenIlearned

thatonly1percentofAustralia'sCoralSeawasprotected,Iwasshocked.Australianmarine（海洋的）

lifeisparticularlyimportantbecausethereefshavemoremarinespeciesthananyothercountryon

earth.Butsadly,only45%oftheworld'sreefsareconsideredhealthy.

Thisstatisticisdepressing,soit*simportantforustodoeverythingtoprotectthem.Thehope

thattheCoralSearemainsacompleteeco-systemhasledmetotakeaction.I'vebecomeinvolved

withtheProtectOurCoralSeaactivity,whichaimstocreatethelargestmarineparkintheworld.lt

wouldserveasaplacewheretheocean'sspecieswillallhaveasafeplaceforever.

Together,AngusandIcreatedalittlevideoandwehopeitwillinspirepeopletobeapartof

themovement.Angusalsosharesmanybeautifulchildhoodmemoriesoftheoceanasayoungboy,

whogrewupsailing,admiringthebeautyoftheocean,andtryingtofindthesecretsofocean

species.

【语篇解读】本文是一篇记叙文。文章向我们介绍了澳大利亚的海洋生物面临的危机

以及作者为此所做的一些努力。

1.FromtheunderlinedsentenceinPara.1,wecanlearntheauthor.

A.seldomwentsurfingatthesea

B.forgothisexperiencesabouttheocean

C.neverwentbacktohishometown

D.hadawonderfulimpressionofHalfmoonBay

D［句意猜测题。根据第一段中的"Idon*tthinkIcanrecallatimewhenIwasn*tawareof

thebeautyoftheocean."和"Ihadthegoodfortuneofhavingtheseaatmyside.”可矢口，作者认为大

海很美，自己很幸运能经常看到海，故画线句应是对半月湾的赞美。D项符合文意。故选D。］

2.Accordingtothesecondparagraph,Australianmarinelife.

A.isescapingfromtheCoralSeagradually

B.dependsonreefsforlivinggreatly

C.maybefacedwithdanger

D.isprotectedbetterthanthatinotheroceans

C［推理判断题。根据第二段“WhenIlearnedthatonly1percentof...areconsidered

healthy.”可推知，澳大利亚的海洋生命可能面临危险。故选C。］

3.TheProtectOurCoralSeaactivityisintendedto.

A.contributetoacompleteeco-system

B.preventmoremarinespeciesfrombeingendangered

C.setupalargenaturereserveforreefs

D.raisemoreteenagers*environmentalawareness

B［推理判断题。根据第三段"I'vebecomeinvolved...asafbplacefbrever.”可推知，这项活

动的目的是创造一个为海洋生物提供永久安全的地方，阻止更多的海洋物种灭绝。故选B。］

4.Angusandtheauthorcreatedalittlevideoto.

A.urgemorepeopletotakeactiontoprotectthemarinespecies

B.inspiremorepeopletoexplorethesecretoftheocean

C.sharetheirchildhoodexperiencesabouttheocean

D.bringbacktopeopletheirmemoryofoceanspecies

A［细节理解题。根据第四段"Together,AngusandIcreatedalittlevideoandwehopeitwill

inspirepeopletobeapartofthemovement.”可知，拍摄视频是为了激励人们去采取行动保护海

洋生物。故选A。］

B

ABritishfriendtoldmehecouldn'tunderstandwhyChinesepeopleloveeatingsunflower

seeds（嗑瓜子）asasnacksomuch/TvemetalotofolderChineseandmanyhaveacrackintheir

frontteeth；Ibelievethatsfromcrackingtheseeds,“hesaid.

Ihadnevernoticedthehabit,butoncehementionedit,Isuddenlybecamemoreaware.I

realizedthatwheneverI'mwatchingTVortypingareport,Ialwaysstartmindlesslycracking

sunflowerseeds.Myfrienddoesn'tlikesunflowerseeds,and,tohim,itseemsunnecessarytowork

somuchjusttogetonesmallseed.

Whenwewereyoung,thewholefamilywouldusuallygettogetherforChineseNew

Year.Then,wealllivedclosetooneanother,usuallyinasmallcity,andsometimesevenneighbors

wouldgodoor-to-dooronChineseNewYear'sEvetocheckoutwhateveryhouseholdwasmaking.

Iremembermyparentswouldbeinthekitchencooking.Outinthelivingroom,alargetable

wouldalreadybelaidout,completewithfancytablecloth,ready-madedumplingfillings,anddishes

fullofcandy,fruitsandsunflowerseeds.Someofthedishesweretobeofferedtoourancestorslater,

whileotherswereforneighborsandchildrentoeatbeforetheeveningfeast.Imusthavelearnedhow

tocracksunflowerseedsbackthen.

Idon*tthinkit*srighttocriticizeone'schoiceinfoodoreatinghabits,nomatterhowstrange

theymayseem.

It'snotonlyinChina.WhenIwentabroad,Ifoundpeoplehadallsortsofstrangehabitswhen

itcametofood.InDenmark,theyputsaltedredfishonbreadandeatitfordinner,nomatterhow

muchitruinsyourbreath.Theythinkit*sadelicacy（美味佳肴），andit'sconnectedtotheircertain

culture.!thinkit'sawonderfultradition.

【语篇解读】本文用中国人喜欢嗑瓜子和丹麦人喜欢吃面包配咸红鱼来证明饮食习惯

来自特定的文化。

5.Whatdidthewriterbecomeawareof?

A.Shehadevertypedareportaboutseeds.

B.ShehadvarioussnackswhilewatchingTV.

C.Shedamagedherteethbyeatingsunflowerseeds.

D.Shehadahabitofcrackingsunflowerseeds.

D［推理判断题。根据第二段中的"Ihadnevernoticedthehabit,butoncehementionedit,I

suddenlybecamemoreaware.IrealizedthatwheneverI'mwatchingTVortypingareport,Ialways

startmindlesslycrackingsunflowerseeds.“可知，作者意识到自己有嗑瓜子的习惯，故D项正确。］

6.WhatdoesthewriterprovebymentioningChineseNewYear?

A.Thetraditionsofcelebratingitdisappear.

B.Eatingsunflowerseedsisrelatedtoit.

C.Thefamiliesgettogetherforit.

D・Childrencaneatdeliciousfoodonthatday.

B［推理判断题。根据第四段中的"Outinthelivingroom,alargetablewouldalreadybelaid

out,completewithfancytablecloth,ready-madedumplingfillings,anddishesfullofcandy,fruits

andsunflowerseeds...whileotherswereforneighborsandchildrentoeatbeforetheeveningfeast.I

musthavelearnedhowtocracksunflowerseedsbackthen.^^可知，春节的时候桌子上会摆放很多

美食，其中就有瓜子，小孩可以在年夜饭前吃，作者就是在那时学会了嗑瓜子，由此可

知，作者提到春节是为了证明嗑瓜子和春节有关，故B项正确。］

7.Thewriter'sattitudetoDenmark'swayofeatingbreadis.

A.neutral（中立的）B.critical（批评的）

C.acceptableD.doubtful

C［推理判断题。根据文章最后一句话“Ithinkifsawonderfultradition.”可知，作者认为

丹麦人吃面包配咸红鱼是一个很好的传统，由此可知，作者接受这种吃法，故C项正确。］

8.Whatlessoncanwelearnfromthestory?

A.Onekindoffooddoesn'tnecessarilysuiteveryone.

B.Itisgoodtoformhealthyeatinghabits.

C.Eatinghabitscomefromacertainculture.

D.Changingyoureatinghabitswillchangeyourlife.

C［推理判断题。根据最后一段中的“Theythinkit*sadelicacy,andit*sconnectedtotheir

certainculture.”可知，丹麦人认为这样吃面包是美味的，这和他们的特定的文化有关，正如

作者喜欢嗑瓜子和春节文化有关，由此可知，饮食习惯来自特定的文化，故C项正确。］

HI.阅读七选五

Canwehumansavoidwar?Canwarbeprevented?

］Throughouttheages,fromtheStoneAgetotheAtomicAge,menhavebeenfighting,

firstwithswordsandshields,thenwithpinsandcannous,andnow,hydrogenbombsandmissiles

areusedformilitarypurpose.But,inspiteofallthese，itisstillbeliefthatwarcanbepreventedand

peacecanbewon,butitrequirestheeffortofeveryoneofus.

2Ifiteverhappens,two-thirdsoftheworldandmuchofthecivilizationwhichmenhave

gainedthroughtime,patienceandeffortwillbedestroyed.Willthentheremainingone-thirdofthe

worldbeabletosurviveonitsown?

Ourtasknowisnottoblamethepast,buttoplanforthefuture.

Ifthereispeaceintheworld,mencanusetheirrocketstoexplorethemysteryofspace，their

submarinestoexplorethedepthofthesea,theirmissilestodelivertomailsandtheirfineequipment

topenetrate（穿透）junglesofAfrica,insteadofusingthemmilitary.

Governmentscanusetheirmoneytobuildmoreschools,sothatmorechildrencanbeeducated

tobeusefulcitizens.3Theycanalsodesignnewmachinestoincreasetheproductionofgoods

andthusimprovethewayofthepeople.

4Itrequires,inmyopinion,theunderstandingandfriendshipbetweenallpeoplefromall

nations.Letnoonesufferdiscriminationbyreasonofcolor,race,reli-gion,ornationalorigin.Letthe

richsupportthepoorandthestronghelptheweak.

Weknowthatneitherpeacenorsuchadreamworldcancometrueinadayormonth.

5_.Butletusplanandbeginnow.

A.Howcanapeacefulworldbeachieved?

B.Theprocessmayeventakedecadesorcenturies.

C.Peacecanbewonthroughtheeffortsofallhumanbeings.

D.Thingsformilitaryusecanbetransformedtopeacefuluse.

E.Scientistscanuseatomicenergytopowersteamshipsandplanes.

F.Iamsurethatwewouldnotliketoexperienceanotherworldwar.

G.Historytellsthattherewerewars,greatorsmall,ineverycentury,ineverydecade.

【语篇解读】文章介绍了人类如何才能避免战争。

1.G［根据空后的"Throughouttheages,fromtheStoneAgetotheAtomicAge,menhave

beenfighting,firstwithswordsandshields...”可知，战争贯穿着整个人类历史,故G项符合语境。］

2.F［根据空后的"Ifiteverhappens,two-thirdsoftheworldandmuchofthecivilization

whichmenhavegainedthroughtime,patienceandeffortwillbedestroyed.“可知，如果这种情况

发生，世界上三分之二的地区以及人类通过时间、耐心和努力所获得的文明将被摧毁。空处

应该会提到一场战争，故F项符合语境。］

3.E［根据空后的"Theycanalsodesignnewmachinestoincreasetheproductionofgoods

andthusimprovethewayofthepeople”可知，他们还可以设计新的机器来增加商品的产量，从

而改善人们的生活方式，They表明空处应该会提到表示人的复数名词，故E项符合语境。］

4.A［根据空后的“Itrequires,inmyopinion,theunderstandingandfriendshipbetweenall

peoplefromallnations.”可知，在我看来，它需要所有国家的人民之间的理解和友谊，故A项

符合语境。］

5.B［根据空前的"Weknowthatneitherpeacenorsuchadreamworldcancometrueina

dayormonth."可知，我们知道，和平和这样一个梦想的世界都不可能在一天或一个月内实现，

故B项符合语境。］

课时分层作业2

I.单句语法填空

1.Somepeoplewhoareveryintelligentandsuccessfulintheirfieldsfinditdifficulttosucceed

inlanguagelearning.

2.Ithinkitnecessaryforastudenttomaster(master)aforeignlanguage.

3.Ihateitwhenpeopletalkwiththeirmouthsfull.

4.Wewouldmuchappreciateitifyoucoulddousthatfavour.

5.Don*ttakeitforgrantedthattheywillsupportyou.

6.Theyhaven'tmadeitknown(know)wherethemeetingistotakeplace.

7.Salesdecreasedto5.67billionfrancsfrom5.69billionfrancs.

8.Japanesemediareportedthesoundofanexplosion(explode)atoneoftheplants.

9.Owing(owe)tothesmallsizeofthisbreed,theycanbeconvenientlykeptinsmallhomes.

10.ItisonSundaythatwedon'tneedtogotoschool.

II.完形填空

Onemonthago,Sarahboughtalipstick(口红)shehaddesired.It'snot1,butitmadeher

happy,becauseitwastheonethatshehadbeen2sinceshesawit.

Everymorning,whensheputsonhermakeup,everythingseemsbrandnewduetothis

lipstick.ltfeelslikethatthewholedayisfullof3Sarahhaslongbeenaccustomedto

rewardingherselfthroughshopping.Andthisdesireformaterialpossession4hertowork

hard.Shefeels5aboutthis.Herlifekeepsgettingbetterallbecauseofthiskindofdesire.But

hermotherthinksquite6

Severaldaysago,whenhermothercametoknowthe7ofthelipstick,theykept

quarrelingforalmostawholeday.Hermotherthoughtthatitwas8wrongtospendsomuchon

suchmeaninglessitems,whileSarahthoughthermotherwastotally9aboutit.

WhatSarahdidn'tknowwasthathermotherhadoncebeenalittlegirlwhohad10in

povertyandstarvation.Thatlittlegirlcouldnotfindenoughclothesto11inwinter.Thatgirl

neededtolearnhowtospendeverypennyasifitweretwoinordertosurvive.

It'sjust12thattwopeoplecan'tunderstandeachother,evenformotheranddaughter,

becauseeverybody's13isdifferent.

Trytobepatientwiththepeoplearoundyou.Trytogetto14them.Trytostandintheir

shoes.Ifyoucannotlistentopeople,howcanyou15themtolistentoyou?

【语篇解读】正在实习期的Sarah给自己买了一个不算便宜的口红，她很开心。但她

妈妈得知口红的价格之后，觉得Sarah实在是太奢侈了，就和Sarah吵了一整天。Sarah觉得

妈妈不可理喻。其实Sarah应该学着站在别人的角度去考虑问题。

1.A.dearB.cheap

C.famousD.handy

B［根据下文“spendsomuch”可知口红并不便宜。故选B。］

2.A.longingforB.headingfor

C.leavingforD.payingfor

A［根据上文“Onemonthago,Sarahboughtalipstick（口红）shehaddesired.”可知此处指这

是她一直想要的一款。故选A。］

3.A.anxietyB.hate

C.laughterD.hope

D［根据上文“everythingseemsbrandnewduetothislipstick”可知因为这支口红一切看起

来都是崭新的，充满希望。故选D。］

4.A.warnsB.persuades

C.begsD.drives

D［对物质财富的渴望驱使她努力工作。故选D。］

5.A.cautiousB.good

C.stressedD.negative

B［根据上文可知购物使萨拉感觉很好。故选B。］

6.A.firmlyB.differently

C.logicallyD.obviously

B［根据下文“wrongtospendsomuchonsuchmeaninglessitems”可知萨拉母亲的看法完

全不同。故选B。］

7.A.qualityB.brand

C.materialD.price

D［根据下文“wrongtospendsomuch”可知母亲得知了口红的价格很贵。故选D。］

8.A.probablyB.approximately

C.slightlyD.completely

D［根据下文“wrongtospendsomuchonsuchmeaninglessitems”可知母亲认为在这些毫

无意义的东西上花这么多钱完全是错误的。故选D。］

9.A.unreasonableB.uncomfortable

C.enthusiasticD.curious

A［妈妈觉得她这样花钱简直就是完全错误的，而她却觉得妈妈完全不可理喻。故选Ao］

10.A.tumedupB.brokenup

C.grownupD.keptup

C［根据上文“hermotherhadoncebeenalittlegirlwhohad...inpovertyandstarvation”可矢口

萨拉的母亲曾经是一个在贫困和饥饿中长大的小女孩。故选C。］

11.A.wearB.sell

C.exchangeD.clean

A［句意：那个小女孩冬天找不到足够的衣服穿。生活在贫穷中，没有冬天穿(wear)的衣

服。故选A。］

12.A.unlikelyB.necessary

C.strangeD.natural

D［显然，两个人不能互相理解是很自然的(natural)。故选D。］

13.A.experienceB.knowledge

C.characterD.family

A［此处指每个人的经历(experience)不一样。故选A。］

14.A.moveB.forgive

C.knowD.copy

C［句意：试着去了解他们。根据下文“Trytostandintheirshoes.”可知试着去了解他们，

站在他们的立场上想想。故选C。］

15.A.forceB.expect

C.orderD.advise

B［句意：如果你不听别人的话，你怎么能指望他们听你的话呢？故选B。］

in.语法填空

Itdoesn'ttakelongtobelieveourownlies,accordingtoanewstudy.

LastyearatBrandeisUniversity,42participants,abouthalfseniorsandhalfmillennials(千禧

一代)，weregivenaformwith102questionsabout1.theydidthepreviousday.Theform

askedthemtorespond2.questionssuchas“Didyousetyouralarmclock?"and"Did

youuseaforktoeatlunch?”Onhalfthequestions,3.(choose)atrandom,theresearchers

toldtheparticipantstolie.Forty-fiveminuteslater,therespondentsanswered4.same

questionnaire.Thistime,researcherstoldthemtoanswerallthequestions5.(truthful).

Thecentralresearchquestionwas:Whentheparticipantsliedonaquestionthefirsttime,did

theythenrememberthey6.(lie)?

Theresultsshowedthattheoldergroupweresignificantlymorelikelythantheyounger

7.(accept)asthetruthalietheyhadtoldlessthananhour8.(early).

“Olderadultshavemore9.(difficult)distinguishingbetweenwhafsrealandnotreal”

saidLauraPaige,10.wastheleadauthorofthestudy,“Oncetheybelievealie,itwill

createanewmemoryforsomethingthatdidn'thappen.

【语篇解读】一项实验研究结果表明老年人更难以区分什么是真实的，什么是不真实

的。一旦他们相信谎言，就会对那些没有发生过的事情产生新的记忆。

1.what［句意：去年在BrandeisUniversity,42名参与者(其中一半是大四学生，一半是

千禧一代)收到了一份表格，上面有102个问题，是关于他们前一天做了什么。本句为宾语从

句，从句中缺少宾语，指代事情，故填what。］

2.to［句意:表格要求他们回答诸如“你设置闹钟了吗？”和“你用叉子吃午饭了吗？”

短语respondto...”回答...",故填to。］

3.chosen［句意：在随机选择的问题中，研究人员让参与者撒谎。本句中choose与逻

辑主语questions构成被动关系，故应用过去分词chosen。］

4.the［句意：45分钟后，受访者回答了同样的问卷。短语thesame"同样的；一样”，

故填the。］

5.truthfully［句意：这一次，研究人员让他们如实回答所有问题。answer为动词，需

用副词修饰，故填truthfullyo］

6.hadlied［句意：研究的中心问题是：当参与者第一次在一个问题上撒谎时，他们是

否记得自己撒过谎？此处“撒谎”发生在“记得”之前，即“过去的过去”，故应用过去完成时，故

填hadlied。］

7.toaccept［句意：结果显示，年龄较大的一组明显比年龄较小的一组更有可能接受他

们在不到一小时前说过的谎言。短语belikelytodo”有可能做某事"，故填toaccept。］

8.earlier［句意见上题解析。短语lessthananhourearlier“不到一小时前”，故填earliero］

9.difficulty［句意：该研究的主要作者劳拉•佩奇说：“老年人更难以区分什么是真实的，

什么是不真实的。一旦他们相信谎言，就会对那些没有发生过的事情产生新的记忆。”短语have

difficulty(in)doingsth.“做某事有困难”，故填名词difficulty。］

10.who［句意见上题解析。本句为定语从句修饰先行词LauraPaige,且先行词在从句

中作主语，指人，故填关系代词who。］

课时分层作业3

I.阅读理解

A

Withonlyabout1,000pandasleftintheworld,Chinaisdesperatelytryingtoclone（克隆）the

animalandsavetheendangeredspecies（物种）.ThatssimilartowhatTexasA&MUniversity

researchershavebeenundertaking（负责）forthepastfiveyearsinaprojectcalled"Noah'sArk”.

Noah'sArkisaimedatcollectingeggs,embryos（胚胎），semenandDNAofendangered

animalsandstoringtheminliquidnitrogen（氮）.Ifcertainspeciesshouldbecomeextinct,Dr.Duane

Kraemer,aprofessorinTexasA&M'SCollegeofVeterinaryMedicine,saystherewouldbeenough

ofthebasicbuildingblockstoreintroducethespeciesinthefuture.

Itisestimatedthatasmanyas2,000speciesofmammals,birdsandreptileswillbecome

extinctinover100years.Thepanda,nativeonlytoChina,isindangerofbecomingextinctinthe

next25years.

Chinesescientistssaidtheygrewanembryointroducingcellsfromadeadfemalepandainto

theeggcellsofaJapanesewhiterabbit.Theyarenowtryingtoimplanttheembryointoahost

animal.

Theentireprocedure（过程）couldtakefromthreetofiveyearstocomplete.

“Thenucleartransfer（核子移植）ofonespeciestoanotherisnoteasy,andthelackof

available（capableofbeingused）pandaeggscouldbeamajorproblem,“Kraemerbelieves/'They

willprobablyhavetodoseveralhundredtransferstoresultinonepregnancy（havingababy）.Ittakes

alongtimeandit*sdifficult,butthiscouldbegroundbreakingscienceifitworks.Theyarecertainly

notputtinganylivepandasatrisk,soitisworththeeffort,9,addsKraemer,whoisoneoftheleaders

oftheProjectatTexasA&M,thefirst-everattemptatcloningadog.

“Theyaretryingtodosomethingthafsneverbeendone,andthisisverysimilartoourworkin

Noah'sArk.We'rebothtryingtosaveanimalsthatfaceextinction.!certainlyappreciatetheireffort

andthere'salotwecanlearnfromwhattheyareattemptingtodo.It'saresearchthatisverymuch

needed.^^

【语篇解读】本文介绍了科学家们正在运用克隆技术拯救如中国的大熊猫这种即将绝

种的动物。

1.Theaimof“NoaHsArk"projectisto.

A.makeefforttoclonetheendangeredpandas

B.saveendangeredanimalsfromdyingout

C.collectDNAofendangeredanimalstostudy

D.transferthenuclearofoneanimaltoanother

B［推理判断题。根据文章第一段中所说“savetheendangeredspecies（物种）”及第二句的

“ThafssimilartowhatTexasA&MUniversity”可推知此题答案为B。］

2.AccordingtoProfessorKraemer,themajorproblemincloningpandaswouldbethelackof

A.availablepandaeggs

B.hostanimals

C.qualifiedresearchers

D.enoughmoney

A［细节理解题。根据文章第六段中Kraemer所说的话可推知此题答案为A。］

3.Thebesttitleforthepassagemaybe.

A.China'sSuccessinPandasCloning

B.TheFirstClonedPandaintheWorld

C.ExploringthePossibilitytoClonePandas

D.China-theNativePlaceofPandasForever

C［主旨大意题。根据文章第一段及全文内容可归纳出此题答案为C。］

4.Fromthepassageweknowthat.

A.Kraemerandhisteamhavesucceededincloningacat

B.scientiststrytoimplantapanda'seggintoatiger

C.KraemerwillworkwithChinesescientistsincloneresearches

D.abouttwothousandofspecieswillprobablydieoutinaboutacentury

D［细节理解题。根据文章第三段第一句可推知此题答案为D。］

B

Weallknowthatwateristasteless.Butithappensfromtimetotime:youpickupthebottleof

wateryoudidn'tfinishyesterday,andittastesstrange.Mostoften,youtendtodropthebottleinthe

trashbin,believingthatthewaterhasgonebad.Butisittrue?

AccordingtoTime,ofcoursenot,tastehaslittletodowithqualityofwater.

AccordingtoTime,whenwaterisexposedtotheairfor12hours,carbondioxideinteractswith

theH2Ointhewater,andthePHvaluelowersslightly.Asaresult,thewaterhasadifferenttaste.

“Butifsmostlikelysafetodrink,“NorwegianexpertTrulsKroghtoldScienceNordic：Tfthe

wateriscoveredandofgoodqualitytostartwith,inprincipleitcanlastathousandyears.Thats

becausewhenwaterisfresh,itcontainslittleorganicmatter.Aslongaswaterisheldincleanglasses

orbottles,nopollutantswillenterittoharmourhealth.

PeopleincountriesliketheUS,theUKandAustraliausuallydrinktapwater.Accordingto

Time,iftapwaterisdrunkwithinsixmonths,thechlorine（氯气）inthewaterwillbeenoughtokill

anybacteriaandkeepitsafetodrink.

However,therearealsosomeexceptions.Ifyouaccidentallyputyourfingersintowateror

storewaterinuncleancontainersdayafterday,microorganism（微生物）willenterthewater.

Withthehelpofsurroundingtemperature,andsunlightstreamingthroughwindows,these

microorganismsmultiplyquickly.Soonerorlater,thewaterwillbeinthechargeoftheunfriendly

bacteria.Andifyoudrinkthewatertoooften,thenyou'remorelikelytobeill.

Andwhataboutwaterinplasticbottles?Heatandplasticareabadcombination,USresearcher

KelloggSchwabstresses.Whenplasticbottlesareusedathightemperatures,theyproducea

chemicalcalledBPA.BPAissomethingthataffectshormones（荷尔蒙）andresearchhastentatively

linkeditto"'severalhealthdamage,includingheartdiseaseandcancer”,Timereported.

Schwabsuggestsreplacingdisposable（一次'性的）plasticbottleswiththerefillablecontainers

madeofmetalorglasstodealwithBPA.

【语篇解读】本文就喝剩下的水是否会变坏进行了研究。研究表明没喝完的水虽然味

道有点怪，但只要水质是好的，保存恰当不被细菌污染，是不会变坏的。但专家建议不要用

塑料杯而要用金属或玻璃制品装热水。

5.Thepurposeofthefirstparagraphisto.

A.showanexample

B.drawaconclusion

C.analyzeaphenomenon

D.introduceatopic

D［推理判断题。根据第一段的内容可知，本段讲述昨天没有喝完的水味道有点怪，有

人会把它扔掉，是因为认为水坏了，这是真的吗？结合下文的内容可知，写第一段的目的就

是引出下文的一个话题。故D项符合题意。］

6.WhichofthefollowingmayTrulsKroghagree?

A.Ifthewatertastesdifferent,weshouldn'tdrinkit.

B.Thewaterheldinacleancontainerislikelysafetodrink.

C.Althoughkeptfresh,watermaystillhavemuchorganicmatter.

D.Coveredwatercanlastforathousandyears.

B［细节理解题。根据第四段TrulsKrogh的话“Butit'smostlikelysafetodrink,“

NorwegianexpertTrulsKroghtoldScienceNordic."Ifthewateriscoveredandofgoodqualityto

startwith,inprincipleitcanlastathousandyears.Thatsbecausewhenwaterisfresh,itcontains

littleorganicmatter.Aslongaswaterisheldincleanglassesorbottles,nopollutantswillenteritto

harmourhealth.”可知，只要水质好，保存在干净的容器内，就不会有污染物，都是安全可饮

用的。分析选项可知B项符合题意，故选B。］

7.Whatcanweinferfromthepassag