大学体验英语3第三版课后答案~

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2、Unit14.Filleachoftheblankswithanappropriateword.Ifoundatreefroginmystudiosomemonthsago.Itookittomygreenhouse ,asIthoughtitwouldbeabetterplaceforthefrog.Butitcamebackandinsistedtakingtheresidence inthestudio.Why?Icouldn’tgetanidea.Then,afterfivemonthsofbeingtogether,weseemedtobeabletocommunicate wi

3、theachother.Itmaysoundwired ,butIdidfeelIcametounderstandwhatitwantedmetodo.Thefrogcametomeprobablyattractedbythehumming toneofmycomputer,whichsoundedlikethatofothertreefrogs,orwithamessage totellmethatfrogsweredyingaroundtheworldbecauseoftheirsensitivity tothepollutionandglobalclimatechange.Asfrog

4、sarean“indicator species”,whathashappenedtothemmayhappentous,ifwesitbackanddonothing.Wemustactnow,oritwouldbetoolate.六、audio声音的，听觉的boundary分界线cup(v.)使成杯状（捧起）decade十年directly直接的focus集中注意力overtake追上，赶上species品种，物种subtle细致的，细微的tone音色，音质1.Theessayist’slanguageexpressesrichandsubtlemeanings.散文的语言表达丰富而细微

5、的含义。2.ThestockbrokerswereovertakenbythesharpdropinthestockmarketlastTuesday.股票经纪人在上周二股票下降的时候投入的股票。3.Biologistshaveestimatedthattherearearoundonemillionanimalandplantspecieslivingandgrowingintherainforests.生物学家估计，有大约一百万的动物和植物物种生活在热带雨林增长。4.IntheUnitedStatesthecostoflivinghasbeensteadilyrisinginthepas

6、tfewdecades.在过去的十年美国的生活消费稳定的上涨。5.Thequicklygrowingcompanyhasambitiousplanstoexpandbeyondnationalboundaries.快速成长的公司制定了雄心勃勃的扩张计划超出国界。6.Thatcomputerstoreishavingasaleofaudiosoftware;let’sgoandhavealook.电脑商店正在出售的音频软件;让我们去看一看吧。7.Tobesafe,youmayputonyourdarkglassestoavoidthesunshiningdirectlyintoyoureyes

7、.为了安全起见,你可以戴上你的墨镜避免阳光直射你的眼睛。8.Whenthekitchenisfinished,I’mgoingtofocusmyattentiononthegardenshed.当忙完厨房后，我将注意力放在花园。9.Inaserioustoneofvoice,thedoctorwarnedhimtokeepoffsugar.医生用严肃的语气警告他远离糖。10.Shecupped herhandsaroundthemugofhotcoffeetowarmthem.她双手呈杯状捧起热咖啡来温暖它们。七、Completethefollowingsentenceswithphrase

8、sorexpressionsfromthepassage.Changetheformwherenecessary.　1.Ididn’texpectyoutobesoefficient;atthatratethetaskwillbefinishedaheadofschedule.我没想到你会这么高效,以这样的速度将提前完成任务。2.Forthesakeofsafety,youmustkeepallmedicin