Unit4CyberspacePeriodOneWarm-upandLesson1Tomorrow'sWorld课时精练(北师大版必修2,广东专用)时间:40分钟Ⅰ.完形填空阅读下面短文,掌握其大意,然后从1~15各题所给的A、B、C和D项中,选出最佳选项。Isthecommonnatureofcancerworldwidepurelyamanmadephenomenon?Thatiswhatsomeresearchersnowsuggest.Cancerisa__1__causeofdeathworldwidethesedays,however,scientistshaveonlyfoundone__2__ofthediseaseininvestigationsofhundredsofEgyptianmummies(木乃伊),__3__RosalieDavidoftheUniversityofManchesterinEnglandsaidinastatement.“Thismightberelatedtothewide__4__ofcarcinogens(致癌物)inmodernsocieties”,writeRosalieDavidandMichaelZimmermannofVillanovaUniversity,Pennsylvania.Cancersare“limitedtosocietiesthatareaffectedby__5__lifestyleissues,suchastobaccouseandpollution__6__industrialization”.Inareviewofpublished__7__oftensofthousandsofancientskeletons(骷髅)andhundredsofmummies,DavidandZimmermannfoundonlyahandfulofcasesofcancer.Onerecentfindingofcancerwas__8__asthefirsteverdiscoveredinamummy.Theyalsoexamined__9__textsandliteraturefromEgyptandGreece,andsaidthatthere'slittle__10__thatcancerwasacommondisease.AquotefromDavid__11__bytheUniversityofManchestersays“:Thereisnothinginthenaturalenvironmentthatcancausecancer.Soithastobea__12__disease,downtopollutionandchangestoourdietandlifestyle.”Still,otherspecialistsincancerandinhumanfossilsstrongly__13__thisview.“Cancerisveryrareinmodernsocietiesinhumansunderage30”,saidoncologistJohnGlaspyatUCLA'sJonssonComprehensiveCancerCenter.“Inancienttimes,peoplerarely__14__mucholderthanthat.Socancerwas__15__.The‘problem’ofmodernsocietiesishavingpeoplelivemucholder.”【解题导语】本文主要讲述了科学家对癌症的新发现,认为癌症不是自然就有的,而是人为造成的,但有些科学家对这一观点持怀疑态度。【重点词语】ininvestigationsof……在的调查当中dietandlifestyle饮食习惯和生活方式humanfossils人类化石1.A.possibleB.leadingC.futureD.popular答案B[文章是在讲述科学家的新发现,cancer是现代社会一个主要(leading)死因,而它在古代却是少见的。popular“”有大众化的,流行的的意思,偏向于修饰褒义的事物。]2.A.reasonB.typeC.caseD.category答案C[这里是指某一案例,事件,case符合语境。]3.A.researcherB.dentistC.photographerD.detective答案A[这里要理解RosalieDavidoftheUniversityofManchester的身份,从上下文看,他是研究人员,故A项符合语境。]4.A.useB.spreadC.digestionD.study答案B[从句子的意思来判断这里是指现代癌症病例的增多跟致癌物的传播有关,故B项符合语境。]5.A.unusualB.uniqueC.fashionableD.modern答案D[这里是指癌症的增多,跟现代的生活方式有关,D项符合语境。]6.A.resultinginB.producedbyC.resultingfromD.producedin答案C[污染是现代工业生产导致的,而不是由现代工业生产出来的,A项的意思相反,B、D项的意思不符合语境。]7.A.magazinesB.analysesC.issuesD.samples答案B[此处是指通过发表了的研究分析来得出结论,B项符合语境]8.A.doubtedB.deniedC.agreedD.identified答案D[结合上下文可知,此处是说它被确认为(identify)古代因癌症死亡的第一案例。]9.A.ancientB.specialC.completeD.valuable答案A[从上下文理解,这里是指研究了关于埃及、希腊的古代文本、文献。A项符合语境。]10.A.valueB.newsC.descriptionD.sign答案D[通过调查、分析、没有多少迹象(sign)表明癌症在古代是一种常见病。]11.A.provedoutB.writtendownC.putoutD.takendown答案C[这里指由大学公开了研究人员的结论,只有C“”项有发表,提出;展示的意思,故C项符合语境。]12.A.manmadeB.longexistedC.speciallydesignedD.newlyinvented答案A[癌症不是自然就...