北大15秋《大学英语3》作业4答案Word格式文档下载.docx

北大15秋《大学英语3》作业4答案Word格式文档下载.docx

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B.B.vastly

C.C.enormously

D.D.largely

A

3.Jeandidnothavetimetogototheconcertlastnightbecauseshewasbusy______forherhistoryexamination.

A.A.toprepare

B.B.preparing

C.C.tobeprepared

D.D.beingprepared

4.Bytheendofthismonth,wesurely______asatisfactorysolutiontotheproblem.

A.A.havefound

B.B.willbefinding

C.C.willhavefound

D.D.arefinding

C

5.Helenwasmuchkindertoheryoungestchildthanshewastotheothers,______,ofcourse,madetheothersjealous.

A.A.whom

B.B.that

C.C.what

D.D.which

D

6.Linda,______haslivednextdoortomeabout10years,willmovetoanothercitysoon.

A.A.who

B.B.which

C.C.that

D.D.what

7.Thevisitorsfeltgreatlysurprisedat______theysawinthemuseum.

B.B.whose

C.C.how

8.Onnoaccount______heldresponsiblefortheaccident.

A.A.thedrivercanbe

B.B.canthedriverbe

C.C.thedriverdocsbe

D.D.doesthedriverbe

9.______byhisfriendforhismistake,Jimfeltveryunhappy.

A.A.Criticizing

B.B.Tocriticize

C.C.Criticized

D.D.Havingcriticized

10.Oursportsmeetisplannedtotakeplace______Saturdaymorning.

A.A.in

B.B.at

C.C.on

D.D.of

11.Youcan’taffordtoletthesituationgetworse.Youmusttake______toputitright.

A.A.decisions

B.B.directions

C.C.sides

D.D.steps

12.Howthesebigstonesweremovedtothemountaintopsremainsa______,thatis,nobodyknowshow.

A.A.mystery

B.B.possibility

C.C.responsibility

D.D.faith

13.MichaelJacksontraveledandsangallaroundtheworld,______hisaudiencewithmusic,danceandfashion.

A.A.entertaining

B.B.awarding

C.C.giving

D.D.proving

14.Toimproveefficiencythefactory______mostofitsworkerswithrobots.

A.A.operated

B.B.replaced

C.C.contributed

D.D.accomplished

15.—Fred:

Hi,Paul,doyoulivenearhere?

—Paul:

______Imovedouttothesuburbs.

A.A.Hi,Fred,howdoyoudo?

B.B.Hi,Fred,I'

mverywell,thanks.

C.C.Yes,Ido.

D.D.No,Idon'

t.

16.

改错

请在以下句子划线部分中，挑出错误的选项。

Weatherpermit,we’llhavethematchtomorrow.

A.A.Weather

B.B.permit

C.C.have

D.D.tomorrow

17.Don’tyouthinkit’sthemostworstfilmwehaveseensincewecameheretenyearsago?

A.A.Don’tyou

B.B.themostworstfilm

C.C.haveseen

D.D.since

18.Sheisasgiftedassheismoreintelligent.

A.A.is

B.B.gifted

C.C.more

D.D.intelligent

19.Theteacher,aswellashisstudents,werepresentatthemeeting.

A.A.teacher

B.B.were

C.C.at

D.D.meeting

20.Walkingaloneinthedesert,thetravelerisboring.

A.A.Walking

B.B.in

C.C.traveler

D.D.boring

--------------------------------------------------------------------------------

21.请阅读以下文章，回答文章后的五个小题。

每个小题只有一个最佳选项。

Isthat6a.m.workoutgettinginthewayofgoodsleep?

Don’tthinkyourfatcellswon’tnotice.AnewstudypublishedinTheAnnalsofInternalMedicine（amedicaljournal）findsthatinadequateshut-eyehasaharmfuleffectonfatcells,reducingtheirabilitytorespondtoinsulin（胰岛素）byabout30percent.Overthelong-term,thisdecreasedresponsecouldsetthestagefortype-2diabetes（amedicalconditioninwhichsomeonehastoomuchsugarinhisorherblood）,fattyliverdiseaseandweightgain.

Thestudyaddstoagrowingbodyofevidencethatthere’“anintimaterelationshipbetweentheamountofsleepwegetandourabilitytomaintainagood,healthybodyweight,”sayssleepexpertHeleneEmsellem,directoroftheCenterforSleepandWakeDisordersinChevyChase,Maryland.ButAmericansdon’tseemtobegettingthemessagethatweneedseventoninehoursparnight.Morethan1in5ofus,accordingtoareportfromtheCentersforDiseaseControlandPrevention,isgettingsixorfewerhoursofsleeppernight,onaverage.

SohowdidresearchersstudyfatcellsintheAnnalspaper?

MatthewBradyoftheUniversityofChicagoandagroupofcolleaguesselectedandpersuadedsevenvolunteerstotakepartintheresearchproject.Theywereallyoung,thinandhealthyandagreedtosleepforeightnightsinasleeplab.“Forfournightstheywereallowedtostayinbedfor8.5hoursanight,”saysBrady.Then,amonthlater,theycamebackforfouradditionalnights——butthistimetheywereallowedjust4.5hoursofsleeppernight.Andaftereachvisit,researchersgotasampleoftheirfat.Bradyexplainsthatthefatcellsrespondedsignificantlyto