大学英语一董亚芬 Unit1 习题加答案Word文件下载.docx

大学英语一董亚芬 Unit1 习题加答案Word文件下载.docx

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handle处理apart分开assign分配任务给…pal朋友

motivation动力culture文化summarize总结process过程

accumulation积累absorb吸收environment环境

2、短语

bynomeans决不atfault有错过atatime一次

beboundto肯定会committomemory记住watchoutfor密切注意

learnof/about得知onaregular/daily/weeklybasis经常/每天/每周

inadditionto除…之外（还有）overandoveragain反复seekout找出

feelfree随意forinstance例如indetail详细地

actout将…表演出来apartfrom除…之外（还有）put…intopractice把…实践

3、单词词汇练习

absorbacquaintanceassigncommandcommunicate

complainconcentrate（on）constantdiligenceenlarge

environmentfrequent（ly）handleneverthelessopportunity

processpurchasereliablerely（on）source

strategysummarize

apartfromatatimebeboundtobynomeans

commit…tomemoryfeelfreeforinstanceinadditionto

indetailona…basisoverandoveragainput…intopractice

seekoutwatchoutfor

4、单词填空（会改成选择题）

1）Youngassheis,Marryisverygoodat__________difficultcustomers.

2）Afterexplaininghisplaningreatdetail,Bob__________itsmainpointsinafewsentences.

3）Thenewly-electedgovernmenthasbegunthepainful_________ofworkingoutitspoliciesandstrategies.

4）Atfirst,Tomfounditdifficultto__________whathisteacherssaidinclass.

5）You__________failtheexamifyoudon’tdoanyrevision.

6）please__________tocallonuswheneveryoulike.

7）Therearejobsmoredangerousthantrunkdriving,__________,traininglions.

8）Themarketingdepartmentisworkingonnew__________toimprovethecompany’sshareofthemarket.

9）Manyofthestudents__________thattheexamwastoohard.

10）Afterreadingthetextthreetimes,thecleverboy__________it__________.

11）Thedoctorinsistedthateverythingwouldbealright.__________,Icannothelpfellinganxiousaboutthesafetyofthechild.

12）Nowadayswe__________moreandmore_________computerstohelpusindoingeverything.

13）__________beingfunandgoodexercise,swimmingisaveryusefulskill.

14）AfterspendingayearinAustralia,thelittlegirlhasgainedquiteagood__________ofspokenEnglish.

5、完形填空

Learnings_________

（1）helpmakethedifficulttaskofstudyingEnglisheasier.Forinstance,itisbeneficialtotreatnewwordsindifferentwaysaccordingtohowf_________

（2）theyoccurineverydayuse:

activewordsyoumustpracticeo_________a_________o_________a_________（3）;

usefulwordsyoumustc_________t_________m_________（4）;

wordsthatseldomoccurIneverydaysituationsrequirejustanoddinga_________（5）.Italsopaystow_________o_________f_________（6）idiomaticwaysofsayingthingsinEnglish.AsidiomaticusageoftencausesdifficultiesforChinesestudents,youmustpaycloseattentiontothewaynativespeakersc_________（7）.

Languagelearningis,infact,anactivep_________（8）.StudentswhomakeaconsciousefforttopracticeEnglish,whoseekouto_________（9）tousewhattheyhavelearned,aremoresuccessfulthanthosewhor_________o_________（10）theteachertodothewholejob.Undoubtedly,itisallimportanttop_________i_________p_________（11）throughspeakingandwritingwhatyouhaveaa_________（12）fromreadingandlistening.

6、翻译

1、史密斯太太对我抱怨说，她经常发现与自己十六岁的女儿简直无法沟通。

2、我坚信，阅读简写的英文小说是扩大我们词汇量的一种轻松愉快的方法。

3、我认为我们在保护环境不受污染方面还做得不够。

4、除了每周写作文外，我们的英语老师还给我们布置了八本书在暑假里阅读。

5、我们从可靠的消息来源获悉下一学期一位以英语为母语的人将要教我们英语口语。

6、经常看英语电影不仅会提高你的听力，而且还会帮助你培养说的技能。

7、如果你们对这些学习策略有什么问题，请随便问我。

我将更详细地进行讲解。

8、那个加拿大女孩善于抓住每个机会讲汉语。

这就是她为什么三年不到就熟练掌握了汉语的原因。

7、快速阅读

TheEarth'

sAtmosphere

Unlessit'

srainingorthewindisblowing,wedon'

tusuallypaymuchattentiontotheatmosphere,theblanketofairthatsurroundstheEarth.Yet,withouttheatmosphere,theEarthwouldbeadesolate（荒芜的）planetwithnosignsoflife!

Theatmosphereplaysseveralrolesinhelpingtomakelifepossible.First,theatmosphereprovidesthethreegasesnecessaryforlife:

oxygen,nitrogen,andcarbondioxide.Allanimals,includingourselves,breatheoxygen.Nitrogenandcarbondioxidearebothneededforplantgrowth.Lessimportantatmosphericgasesincludeargon,neon,helium,andhydrogen.

Second,theatmospherealsoprotectsusfrommostofthesun'

shigh-energyultravioletlightrays,whichareharmfultolife.AlthoughtheseraysareonlyasmallpartofthesunlightstrikingtheEarth,theyareknowntobeverydangerous.However,99percentofallultravioletraysareabsorbedbeforetheyreachtheEarth'

ssurface.Theyareabsorbedbyanatmosphericgas,calledozone,atypeofoxygengas.TheozonelayersurroundstheEarthbutismuchthinnerovertheNorthandSouthPolesthanoverotherregionsoftheEarth.

TheonepercentoftheultravioletlightintheatmospherethatdoesreachtheEarth'

ssurfaceisknowntocausesunburnandisnowbelievedtoalsocauseskincancerinmanypeople.Becauseofthis,doctorsrecommendthatpeoplelimittheamountoftimetheyspendindirectsunlightandwearasuntanlotion（防晒油）thatblockstheultravioletrayswhentheydosunbathe.

Finally,theatmospheregeneratesalltypesofweathersuchasclearblueskiesandstorms.Itactsasahugeenergymachine,changingsunlightintootherformsofenergysuchasheatandwind.Aspartofthisrole,theatmosphereregulatesthetemperatureontheEarth'

ssurface.Firstitallowsonly46percentofthesunlightstrikingittopassthroughandactuallyreachtheEarth'

ssurface.Second,carbondioxidegasintheatmospherecontrolstheamountofwarmthontheEarth'

ssurfacethatisallowedtoradiate（发散）backintospace.Bythesetwocontrollingdevices,theatmosphereregulatestheEarth'

ssurfacetemperature.

1、Choosethebestanswerstothefollowingquestions.Whichofthefollowingistrueaccordingtothepassage?

A.TheozonelayerismuchthickeroverNorthAmericathatovertheNorthPole.

B.Ozoneisatypeofanitrogengas.

C.OzonecanabsorbsomeultravioletraysbeforetheyreachtheEarth'

ssurface.

D.Ozonecanprotectusfromanythingharmfultoourlife.

2、Themainideaofthethirdparagraphisthat.

A.theEarthissurroundedbyalayerofozone

B.99percentofallultravioletlightraysthatreachtheEarth'

ssurfaceareabsorbedbytheozonelayer

C.theozonelayerprotectspeoplefromthesun’shigh-energyultravioletlightrays.

D.ozoneisanatmosphericgaswhichsurroundstheEarth

3、Accordingtothearticle,carbondioxide__________

A.isalessimportantatmosphericgas

B.controlstheamountofwarmthontheEarth’ssurface.

C.allowsonly46percentofsunlighttoreachtheEarth'

ssurface

D.actslikeahugeenergymachine

4、Doctorssuggestthat_____________.

A.peopleshouldstayawayfromthesunlighttoprotectthemselvesfromthesunburn

B.peopleshouldblocktheultravioletrayswhentheydosunbathe

C.peopleshouldwearasuntanlotionunderdirectsunlight.

D.peopleshouldknowthatskincancerresultsfromsunbathing4.

5、TheEarthwouldbeadesolateplanetwithouttheatmospherebecause

A.theatmosphereismainlycomposedofoxygen,hydrogenandnitrogen,whichareindispensabletoourlife

B.theatmosphereplaysseveralrolesinmakinglifepossible

C.theatmosphereallowsonlyharmlessraystoreachtheEarth

D.theatmospherecontrolstheamountofwarmthontheEarth'

ssurface

IsElNinoBack?

TherearesignsthatElNino,themassivewarmingofthePacificOceanthataffectstheworld'

sweather,maybeformingagain.

Asatelliteorbiting600milesabovethePacificOceanpickedupastreakofwarmwaterformingalongtheequator—anearlysignofthephenomenonfeltaroundtheworldwhenitlastappeared,justfouryearsago.

Itismorethan3,000mileslong.Thewaterinitisninedegreeswarmerthaninsurroundingareas—asubstantialnumbertooceanographers.Thewarmpoolisgrowingandhascausedgovernmentforecasterstoputoutanadvisory（气象报告）.

"

It'

saheads-upinadvancesothatpeoplecanproperlybepreparedforthisevent."

saidVernonKouskyoftheNationalOceanicandAtmosphericAdministration'

sClimatePredictionCenter.

Ifafull-blownElNinodoesform,Americanswouldmostlikelystarttofeelitseffectsnextfallandwinter.

Thegovernmentcalledtheforecastverypreliminary—butthewarningallowsemergencyagenciestomakeplans.

Rightnow,wecan'

tpredictwhetheritwillbeweak,moderateorstronginintensity/'

saidKousky.

Somescientistssayit'

stooearlytopredictanythingatall."

I'

dbeverycareful,"

saidonewhoaskednottobenamed."

Thereisindeedaverylargeanomaly（反常状态）inthePacificrightnow,andweneedtowatchit.Butthesethingsareverydifficulttoforecast."

ElNinoscanbebothgoodandbad,dependingonwhereyouare.EvenarelativelysmallonecanbringaboutsignificantchangesbyshiftingthewindpatternsfromthePacificOceanthatpassovertheUnitedStates.

DuringthelastElNino,in1997and1998,rainfalldoubledinCalifornia,causinga$1billioninstormdamage.Ontheotherhand,inFlorida,forestfireswereputoutbytheextrarain.

Choosethebestanswerstothefollowingquestions.

1、WhatcanberegardedasanearlysignofElNino?

A.A3,000-milelongwaterstreak.

B.Awaterstreaktha