18秋华师《综合英语（3）》在线作业-1辅导资料

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1、18秋华师《综合英语（3）》在线作业-11、BFJPS2、AGJNR3、CFIPQ4、DFKMS5、AGJOS一、阅读理解共10题，100分1、About200millionyearsago,astheTriassicPeriodcametoaclose,manyspeciesofanimalsdisappearedfromthefaceoftheEarth.Scientistspreviouslybelievedthattheseriesofextinctionshappenedoveraperiodof15to20millionyears.Recentdiscover

2、iesinNovaScotiasuggest,however,thattheextinctionsmayhavehappenedoveramuchshorterperiodoftime,perhapslessthan850,000years.EvidenceforarapidextinctionofspeciesattheencoftheTriassicPeriodisfoundintheMcCoyBrookFormationalongtheBayofFundyinNovaScotia.Fossilsfoundinthisformationindicatearapiddi

3、sappearanceofspeciesratherthanaslowandgradualchangeovertime.OneexplanationforarelativelysuddenextinctionattheendoftheTriassicmaybethatalargemeteoritestrucktheearthatthetimeandisresponsiblefora70-kilometerholenearby.Ifgeologistsandotherresearchescanfindevidence,suchasshockedquartzintherock

4、formations,thatameteoritedidstriketheearth,itwouldgivemorecredencetothetheoryofrapidTriassicextinctions.Itispossible,however,thatevenifarapidextinctionhappenedinandaroundNovaSctia,itdidn’tnecessarilyoccurintherestoftheworld.(1)、Whatisthemaintopicofthispassage?Athedisappearanceofanimalspec

5、iesattheendoftheTrassicPeriodBevidenceofarelativelysuddenextinctionofspeciesCthepossibilityofanextinctionhappeningsimultaneouslythroughouttheworldDameteoriteholeintheBayofFundyinNovaScotia(2)、Whichofthefollowingisclosestinmeaningtotheword“relatively”inline7?AcomparativelyBindependentlyCph

6、enomenallyDvisibly(3)、Whichofthefollowingbestdescribestheauthor’stone?AaggressiveBexplanatoryCapologeticDcynical(4)、Whichofthefollowingcouldbestreplacetheword“struck”asusedinline8?AaffectedBdiscoveredCdevastatedDhit(5)、AllofthefollowingwerementionedinthepassageEXCEPTAtheextinctionoflateTr

7、assicanimalsBthedurationoftimefortheextinctionCalargemeteoritehittingtheEarth10millionyearsagoDtheuseoftypesofrockinscientificresearch正确答案是：BFJPS2、FranklinD.Roosevelt,the32ndpresidentoftheUnitedStates,wasfromawealthy,well-knownfamily.Asachild,heattendedprivateschool