新编大学英语四级听力每日训练-第364期.docx

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新编大学英语四级听力每日训练第364期

SectionBPassageOne26.A.Adjustinghisbiologicalclock.B.Knowingthedirectionofajet.C.Realizingthetimedifferenceduringflight.D.Gettingusedtotheweatherofanewplace.27.A.24.B.36.C.48.D.72.28.A.Toexplainthecauseofjetlagproblems.B.Toteachushowtoavoidjetlagproblems.C.Toexplainthedifferencesbetweenzones.D.Toshowthewaystoarrangetimeproperly.SectionBPassageOneJetlag,causedbytravelingbetweentimezones,isbecomingacommonproblemforfrequenttravelers:for49percentitisonlyanuisanceandfor45percentitisarealproblem.[26]Itiscausedbydisruptiontotheinternalbiologicalclock,andmayleadtodigestiveproblems,tiredness,andsleepdisruption.Generallyspeaking,ourbiologicalclockisslightlydisturbedifwejustmoveintothenexttimezone,butjetlagbecomesaproblemoncewehavepassedthroughthreeorfourtimezones.[27]Thebodytakesaboutonedaytogetovereachhouroftimedifference.Buttheseriousnessofjetlagproblemsalsodependsonourdirectionoftravel.Ifwetravelwestwewillbeinadvanceofourselvesasfarasourinternalclockisconcerned,andproblemsmayarise.Awest-to-eastjourney,ontheotherhand,makesuslatecomparedtothelocaltime.Itoftendemandsevengreatereffortinadjustmentsincewearenotquickenoughtocatchupwiththenewtimeschedule.Therefore,atripfromNewYorktoLosAngelesoftencausesfewerproblemsthanaLosAngeles-NewYorktrip.Questions26to28arebasedonthepassageyouhavejustheard.26.What'stheproblemapersonsuffersfromwhentravelingbetweentimezones?正确答案：A解析：录音开头就提到Jetlag，第2句就说明它的起因是“人体内部的生物钟被打乱”，故答案为A。27.Howmanyhoursdoesoneneedtogetoverhisjetlagproblemifhetravelsacrossthreetimezones?正确答案：D解析：数字题，一般要做记录并进行简单的运算。原文说到1个小时的时差需要1天来调整，那么3个时区就是3个小时的时差，所以应该用3天即72个小时，D正确。28.What'sthemainpurposeofthepassage?正确答案：A解析：主旨题。录音的话题是jetlagproblems，但只是客观陈述现象和原因，并未提及避免的方法，故A对而B错。