Unit 3 Period one

Unit3ScienceandnaturePeriodOneWelcometotheunit&ReadingⅠ.用适当的介、副词填空1．Scienceisdevelopingfasterthanwecan________thinkaboutit.2．However，________generalthescientistswerepraised________theirwonderfulscientificadvance.3．Instead，hethinksresearcheffortsshouldconcentrate________creatingnewtissuesandorgansthatcanbeusedtocurediseaseslikecancer.4．Cloninghumanembryos________theintentionofdestroyingthemshowsnorespect________humanlife.5．Somescientistsarealreadypushing________withresearchinordertoproduceaclonedhumanbaby.6．Chinahassucceeded________producingclonesofcowsandgoats，andcontinuestoresearchways________whichcloningcanbenefitmankind.7．Ifwetoy________nature，wewillhavetodealwiththeconsequences.8．Iwouldliketocomment________yourarticle，“Theperfectcopy”．9．Whenreadingarticlesaboutscience，weoftencome________difficultscientificterms.10．Forthisreason，Ialsodon’taccepttheideaofcloninghumans—mankindisnotready________this.Ⅱ.佳句翻译与仿写1．Ontheonehand，somescientistspointoutthat....Ontheotherhand，manypeople，includingsomescientists，disagreeandareafraidthat...翻译：________________________________________________________________________________________________________________________________________________仿写：一方面，天然气造成的污染较少；另一方面，天然气仍比其他能源便宜。________________，naturalgascauseslesspollution；_________________________，naturalgasisstillcheaperthanotherenergyresources.2．ThefirstmammaltobeclonedsuccessfullyfromanadultcellwasDollythesheep.翻译：________________________________________________________________________________________________________________________________________________仿写：那是那年上演的第一场戏。________________________________________________________________________3．Chinahassucceededinproducingclonesofcowsandgoats.翻译：________________________________________________________________________________________________________________________________________________仿写：宇航员们按计划成功地从月球返回到地球。Theastronauts__________________________________________________________accordingtotheplan.4．IfIwerethePresidentofItaly，Iwouldthinkabouttakingawayhislicence.翻译：________________________________________________________________________________________________________________________________________________仿写：如果我有这个机会，我就会立即克隆她以便我又能和她在一起。______________________________________sothatIcouldbewithheragain.Ⅲ.单项填空1．Doyouthinkitwouldbeagoodideatoclonehumans________？A．someadayB．anotherdayC．theotherdayD．someday2．IfI________thechance，I________aclonedbabyrightnow.A．have；willhaveB．have；wouldhaveC．havehad；willhaveD．had；wouldhave3．SeverinoAntinori，anItalianphysician，________thathewantstobethefirsttocloneahumanbeing.A．declaresB．declaredC．hasdeclaredD．haddeclared4．InChina，scientistshavefocusedtheireffortsoncloninganimals，aswellasclonedtissues________inmedicaltreatment.A．usedB．usingC．tobeusedD．beingused5．Chinahas________clonesofcowsandgoats，andcontinuestoresearchways________cloningcanbenefitmankind.A．succeededtoproduce；thatB．managedtoproduce；whichC．succeededinproducing；inwhichD．managedinproducing；/6．Therearemanychildren________withnoparents________wouldbedelightedtohaveamother.A．ontheworld；theyB．ontheearth；whichC．intheworld；whoD．onearth；that7．Ithinkthescientificadvances________inyourarticlearefantastic!A．mentioningB．mentionedC．beingmentionedD．tomention8．Iamincompleteagreementwithhumancloning.________，scientists________moralideasforcenturies.A．Aboveall；havechallengedB．Firstofall；arechallengingC．Afterall；havebeenchallengingD．Inall；hadchallenged9．Ona________note，cloningwouldtotallytransformmylife.A．privateB．publicC．ownD．personal10．Youwilloftenbeamazedtodiscover________confusedyouatfirstmakessenseuponfurtherreadings.A．thatitB．whatthatC．thatwhatD．whatitⅣ.阅读理解Spacetravelisdefinitelybadforastronauts’bones，reducingtheirbonedensity(密度)afteronlyamonthofweightlessness，accordingtoaFrenchresearchpublishedonFriday.LaurenceVicoandhisfellowworkersatSt.EtienneUniversitycalledformoreresearchintotheeffectsofmicrogravity，aftertheirstudyof15astronautsfromtheRussianMIRstationshowedbonelosscontinuedthroughoutspaceflights.“Bonelosswasespeciallystrikinginfourastronauts，”thescientistsreportedintheLancetMedicalJournal.Theymeasuredthebonemineraldensity(BMD)ofbonesintheforearm(前臂)andlowerlegoftheastronautswhohadspentonetosixmonthsinspace.TheBMDlosswassignificantinthetibia(胫骨)ofthelowerleg，aweight­bearingbone，butbarelychangedintheradius(桡骨)oftheforearm.“Ourresultsindicatetheneedtoinvestigatenotonlydifferentbones，butalsodifferentareasofthesamebonesincenotallsitesoftheskeleton(骨架)aresimilarlyaffectedbyspaceconditions，”theyadded.Withoutgravitythebodyisn’tbearinganyweightsothereisnoneedforcalcium(钙)whichmakesbonesstrong，anditbecomesemptyintothebloodstream.Theresearchteamsuggestedinfuturescientistsshouldtrytodetermineifthelossofbonedensitywasonlyonweight­bearingbonesonlongerflights，alsothepossiblerecoveryafterreturningtoEarth.1．FrenchscientistsdidtheirresearchonRussianastronauts，because________.A．theyonlycaredfortheRussianastronautsB．theywerenotinterestedintheirownastronautsC．theRussiangovernmentinvitedthemtodotheirresearchD．the