北师大版英语选修7 Unit 21 Human Biology同步练习Word版含答案.docx

北师大版英语选修7 Unit 21 Human Biology同步练习Word版含答案.docx

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北师大版英语选修7Unit21HumanBiology同步练习Word版含答案

课时作业（二十六）　题型组合练——练规范

（阅读理解＋语法填空＋短文改错＋书面表达）

限时：

55分钟

Ⅰ.阅读理解

A

“Deextinction”，theideathatextinct（绝种的）animalscanbebroughtbackthroughcloningorgenetic（基因的）engineering，hasattractedtheinterestofasmallgroupofscientists.ThetopichasmadethecoverofNationalGeographicMagazine.Supporterssaytheyaredoingitformoralreasonsandbecausewe“miss”theextinctanimals.Theyblamehumanexploitation（suchastrapping，hunting,habitatdestruction）oftheextinctanimals,buttheirplans,thoughtheysoundexciting,areexploitationinanotherform.

Consideringtheimperfectscienceofcloning,deextinctionwouldcauseanimalssuffering.Mostanimalsbornofsuchexperimentswouldsufferseriousdiseases,dyingsoonafterbirthorhavingashortenedlifetime.SpanishandFrenchscientistsworkedforyearstobringthePyreneanibex,aspeciesofwildgoat,backfromextinctionbycloning.In2009,theysucceededonlyinproducingasickbabygoatthatdied10minutesafterbirth.Fortheseanimalstobeborn,otheranimalswouldliveincaptivity,inalaborelsewhere,andserveasmothersubstitutes（代用品），routinelyhavingoperationsaspartofthecloningprocess.Forexample,elephantswouldbekeptincaptivitytocarrywoollymammoth（猛犸）babiesfornearlytwoyears.Suchexperimentsoftenleadtootheranimals'unhappinessaswell.

Ifextinctanimalsaresuccessfullybroughtback,wherewouldtheygo?

Theiroriginalhabitatshavedevelopedandchangedwithoutthem.Theyareunlikelytosurviveinthenaturalenvironment,but,iftheydomanagetosurvive,theywillaffecttheirenvironmentinunpredictableways,presentinganewthreattotheecologicalsystem.Iftheanimalsbornthroughdeextinctionarestuckinzoosandmuseumsinstead,whatgoodisthat?

Itisexploitation,notasolution.

Itwouldbebettertoapplycreativethinkingaboutprotectiontothereallifeproblemsoftoday'sworld.Deextinctiontakesattentionawayfromthedifficultsituationofendangeredanimals.DiscussionsaboutwoollymammothcloningdonothingtostoptheillegalkillingsofendangeredwildAfricanelephants.Moneywouldbebetterusedtopreventhumanconflictwithwildlifeandtheirecosystems.

Let'skeepdeextinctionintheworldofsciencefiction,learnfromourfailedpast,andprotectwildanimalsandtheirhabitatsforthefuture.

[语篇解读]　本文为一篇议论文。

通过克隆或基因工程使已经灭绝的动物“复活”引起了一些科学家的兴趣，但这种做法对于现存的动物及生态环境等不一定有利。

1．Theunderlinedword“it”inParagraph1refersto“________”．

A．deextinction

B．cloningorgeneticengineering

C．exploitation

D．NationalGeographicMagazine

解析：

词义猜测题。

根据第一段第一句可知“deextinction”指的是“通过克隆或基因工程使已灭绝的动物重生”。

再结合第三句（支持者们说他们这么做是出于道德），由此可见画线的it指的就是“deextinction”，故答案为A项。

答案：

A

2．InParagraph2,examplesaregiventoshowthat______.

A．modernelephantsarerelatedtowoollymammoth

B．scientistsshouldimprovethecloningprocess

C．deextinctiondoesharmtosomeanimals

D．it'spossibletobringbackextinctanimals

解析：

推理判断题。

第二段的主题句为第一句话，即Consideringtheimperfectscienceofcloning，deextinctionwouldcauseanimalssuffering.然后作者用举例的方法说明了这一道理，由此可见本题答案为C项。

答案：

C

3．Whatmighthappenifextinctanimalscomebacktothewild?

A．Theproblemofextinctionwillbesolved.

B．Theywillliveintheiroriginalhabitats.

C．Thebalanceofnaturemaybedisturbed.

D．Moreendangeredanimalswillbesaved.

解析：

细节理解题。

根据第三段中的“iftheydomanagetosurvive，theywillaffecttheirenvironmentinunpredictableways，presentinganewthreattotheecologicalsystem”（如果它们真的生存下来了，它们会以不可预知的方式影响它们的生存环境，从而对生态系统造成一个新的威胁）可知答案为C项。

答案：

C

4．AccordingtoParagraph4,deextinctionmay________.

A．preventtheillegalkillingsofAfricanelephants

B．makepeoplecarelessaboutendangeredanimals

C．preventtheconflictbetweenhumansandanimals

D．raisepublicawarenessofprotectinganimals

解析：

细节理解题。

根据第四段中的“Deextinctiontakesattentionawayfromthedifficultsituationofendangeredanimals.”可知答案为B项。

答案：

B

B

Ifyoufollowedthe2016OlympicGames,youmayhavenoticedthatseveralathletes,includingUSswimmerMichaelPhelps,hadcircularbruisesontheirbodies.Thesebruisesweretheresultof“cupping（拔火罐）therapy”，atraditionalChinesemedicinalpracticethathasbeenaroundformorethan2,000years.

Manyathletessaythattheyhavebenefitedfromthetherapy.Phelpsusedthetherapyinthefallof2014andhasuseditabouttwiceaweeksince,reportedABCNews.AnotherUSswimmer,DanaVollmer,alsobelievesthat“itreallyhelpswithbloodflow”．

However,somehavesaidthatthesupposedhealtheffectsresultfrompeople'sfeelingthatthetreatmentworks,ratherthananyphysicaleffectofthetreatment.

Tofigureoutcuppingtherapyhasanyphysicaleffect,lastyearresearchersfromGermanycarriedoutatestinwhichafalsetreatmentwasprovided.

Inthestudy,thesametypeofcupswasusedintherealtreatmentandthefalsetreatment.Butinthefalsetreatment，thecupshadaholeatthetopsothattheycouldn'tcreatethepropersuction（吸力）．

Thetestedpatients,whosufferedfromadisorderthatcausedalotofpain,weretoldthattheywouldreceiveeithertraditionalcuppingor“softcupping”.Buttheywerenotinformedthatthesocalled“softcupping”wasafalsetreatment.

Itturnedoutthatmostpatientscorrectlyguessedwhichkindofcuppingtheyhadreceived.Inbothgroups,patientsalsoexperiencedaboutthesamereductionsinpain.“Theresultssuggesttheeffectsofcuppingtherapymightcomefromfactorsthatarenotnecessarilypartofthetreatmentitself，”theresearcherstoldtheLiveSciencewebsite.

Thequestionofwhethercuppingtherapyworksstillneedstobeanswered.“Butbecausethetreatmentisrelativelysafeanditcouldbehelpfulforsomepeople,thetherapycanbeusedaspartofacomprehensivetreatmentprograminvolvingotherexercises,nutritionalchoicesandlifestylechanging，”DrBrentBauer,directoroftheUSComplementaryandIntegrativeMedicineProgramatMayoClinic,toldLiveScience.

[语篇解读]　本文主要介绍了中国传统医疗方式拔火罐的实际疗效问题。

5．WhyisMichaelPhelpsmentionedinthepassage?

A．Togiveathletesanewwaytoswimfaster.

B．Toprovideathleteswithanewwayoftreatment.

C．Tointroducethetopiconcuppingtherapy.

D．Toshowswimmerssufferfromdisorders.

解析：

推理判断题。

根据文章前两段的整体内容可推知，提到运动员菲尔普斯是为了导入文章的话题，即拔火罐疗法是否有效，故选C。

答案：

C

6．ThepurposeofthetestbyresearchersfromGermanywasto________.

A．promotethehealtheffectsofcuppingtherapy

B．seewhethercuppingtherapyhasaphysicaleffect

C．comparetraditionalcuppingwithsoftcupping

D．comparecuppingtherapy'seffectsondifferentgroupsofpeople

解析：

细节理解题。

根据第四段整体内容可知，实验的目的是验证拔火罐是否真的有效。

答案：

B

7．Whatcanbelearnedfromthepassage?

A．Differentpeopleneeddifferenttypesofcuppingtherapy.

B．Therealtreatmentandfalsetreatmentalmosthavethesameeffects.

C．Theresultsshowthatcuppingtherapyisnotpartofthetreatment.

D．Cuppingtherapyisonlyeffectivewhenusedwithlifestylechanging.

解析：

细节理解题。

根据倒数第二段的“Inbothgroups，patientsalsoexperiencedaboutthesamereductionsinpain.”可知，实验表明两种不同的拔火罐方法效果是一样的。

答案：

B

8．AccordingtoDrBrentBauer,cuppingtherapy________.

A．isafastandeasytreatmentforpeopletocarryout

B．isanewlyinventedwaytocuresomediseases

C．needsalongperiodoftimetotakeeffect

D．canbeusedtogetherwithothertreatments

解析：

细节理解题。

根据最后一段中的“Butbecausethetreatmentisrelativelysafeanditcouldbehelpfulforsomepeople，thetherapycanbeusedaspartofacomprehensivetreatmentprograminvolvingotherexercises，nutritionalchoicesandlifestylechanging”可知，DrBrentBauer认为拔火罐可以和其他方法一起配合治疗。

答案：

D

Ⅱ.语法填空

Allofushavereadthrillingstories.Inmanyof1.them（they）theherohadonlya2.limited（limit）andspecifiedtimetolive.Sometimesitwasaslongasayear；sometimesasshortastwentyfourhours，3.butwewerealwaysinterestedin4.discovering（discover）justhowthedyingmanchosetospendhislastdaysorhislasthours.

Suchstoriessetupthinking，wondering5.whatweshoulddoundersimilarcircumstances.What6.happiness（happy）shouldwefindinreviewingthepast，andwhatregrets?

Sometimes，Ihavethoughtitwouldbeanexcellentruletoliveeachday7.asifweshoulddietomorrow.Suchanattitudewouldstress8.sharply（sharp）thevaluesoflife.

Ihaveoftenthoughtitwouldbeablessingifeachhumanbeing9.were（be）strickenblindanddeafforafewdaysatsometimeduringhisearlyadultlife.Darknesswouldmakehim10.more（much）appreciativeofsight；silencewouldteachhimthejoysofsound.

Ⅲ.短文改错

LastSunday，IsatatmyfavoritetableinarestaurantandwaitforthefoodIhadorderedtoarrive.SuddenlyIfoundthatLinLing，oneofmyclassmate，workedlikeawaitressthere.Honestspeaking，itwasgreatsurpriseformetofindherworkingthere.AsfarasIknow，she'sfromaricherfamily.Whatwasitthatmadehertoworkthere?

Iwalkeduptoherandaskedherthereason.Whenasking，shesaid，“Ijustwanttoearnsomepocketmoneysothatwecanhelpsomechildreninpoorareasgobacktoschool.”Howagoodgirl!

Ishouldlearnfromher.

答案：

LastSunday，Isatatmyfavoritetableinarestaurantand

forthefoodIhadorderedtoarrive.SuddenlyIfoundthatLinLing，oneofmy

，worked

awaitressthere.

speaking，itwas

greatsurpriseformetofindherworkingthere.AsfarasIknow，she'sfroma

family.Whatwasitthatmadeher

workthere?

Iwalkeduptoherandaskedherthereason.When

，shesaid，“Ijustwanttoearnsomepocketmoneysothat

canhelpsomechildreninpoorareasgobacktoschool.”

agoodgirl!

Ishouldlearnfromher.

Ⅳ.书面表达

假定你是班长李华，打算为本班的加拿大交换生Wendy举办18岁生日聚会，请用英语给她写一封电子邮件，告知她聚会的时间、地点、参加人员以及活动安排，并征求她的意见。

注意：

1.词数100左右；

2．可以适当增加细节，以使行文连贯；

3．开头和结尾已为你写好，不计入总词数。

Dear