北师大版高中英语选修七Unit 21《Human Biology》能力提升Word文件下载.docx
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2.Weshouldbe_________toourfriends.(faith)
3.Itisa_________tobeinvitedtospeakhere.(privileged)
4.Thesportsmeetingofourschoolisheld_________.(annual)
5.OurEnglishteacherwon’t_________anycheatinginexams.(tolerate)
6.Theboydidn’tgohomeattheusualtimeandhisparentswere_________abouthissafety.(concern)
7.Smokingisstrictly_________intheprocessofhandlingexplosivematerial.(prohibit)
8.Thedriverwaspunishedfor_________thetrafficrules.(violate)
9.Theycan’thave_________howthingswillturnout.(foresee)
10.Thesportsmeetingwas_________becauseofrain.(postpone)
Ⅱ.完成句子
1.假如她昨天邀请我参加聚会,我就去了。
Ifshehadinvitedmeyesterday,I____________________.
2.有必要保持办公室的整洁。
_______________tokeeptheofficesneat.
3.人们相信“泰坦尼克号”是在撞上冰山之后沉没的。
Titanic__________________afterhittinganiceberg.
4.看来非常遗憾,杰克没能够及时登机。
________________thatJackdidnotboardtheplanetimely.
5.他们夺走了人民的自由。
They_______thepeople____theirliberty.
Ⅲ.单项填空
1.Whenwetalkaboutbreakingrecords,we_______theissueofperformance-enhancingdrugs.
A.comeaboutB.comeacross
C.comearoundD.comealong
2.Itiscompulsoryforwinnerstobetestedbutotherparticipantsareonlytested_______.
A.inadvanceB.bychance
C.atrandomD.atallcosts
3.[2018合肥模拟]Thecityiswellknownforitseducationofgoodquality,however,itsstandardsofeducationhave_______inrecentyears.
A.distributedB.contributed
C.cancelledD.declined
4.Whenyouareolderandexperiencemoreoflife,youwillbebettermentally_______todealwithwhateverhappens.
A.offeredB.providedC.equippedD.supplied
5.[2018唐山模拟]JennyhopesthatMr.SmithwillsuggestagoodwaytohaveherwrittenEnglish_______inashortperiod.
A.improvedB.improving
C.toimproveD.improve
6.Itwastoohardforthefirefighterstogetclosetotheburningbuilding.Alltheirattemptstorescuethepeopletrappedwere_______.
A.invainB.inreturn
C.inplaceD.indanger
7.Theoldladycametothepolicestationandclaimed_______ofherpursewhenshewasshopping.
A.toberobbedB.toberobbing
C.torobD.tohavebeenrobbed
8.[2018宣城模拟]Nobodycan_______hisrudebehavior,andthat’swhyhehasnofriends.
A.accustomB.understand
C.coverD.tolerate
9.Itwasanunpopulardecisiontopostpone_______thenewschool.
A.buildingB.tobuild
C.havingbuiltD.tohavebuilt
10.Ifearthatapriorengagementwill_______mefromjoiningyouatdinner.
A.disagreeB.prohibit
C.gatherD.produce
11.HetoldusthathewasgoingtoBeijingto_______hisfortune.
A.seekB.researchC.pickD.earn
12.[2018福州模拟]EachmembercountryofWTOmust_______itslawsandregulationsandcompeteontheprincipleoffairnessandcooperation.
A.catertoB.correspondto
C.relatetoD.submitto
13.Doesthecommonman_______theideaofpoliticalunionbetweenEuropeancountries?
A.deliverB.opposeC.smoothD.equal
14.[2018池州模拟]Youmusttryto_______thememoryoftheseterribleevents.
A.makeoutB.wipeout
C.pickoutD.workout
15.Wehavelost_______inhimandmistrustedhim.
A.dependenceB.faith
C.beliefD.confidence
Ⅳ.阅读理解
(A)
Eachcellinthehumanbodycontainsabout25,000to35,000genes,whichcarryinformationthatdeterminesyourtraits.Traitsarecharacteristicsyouinheritfromyourparents;
thismeansyourparentspasssomeoftheircharacteristicsontoyouthroughgenes.Forexample,ifbothofyourparentshavegreeneyes,youmightinheritthetraitofgreeneyesfromthem.Orifyourmomhasfreckles(雀斑),youmightinheritthattraitandwindupwithafreckledface.Andgenesaren’tjustinhumans—allanimalsandplantshavegenes,too.
Geneshangoutalllineduponthread-likethingscalledchromosomes(染色体).Chromosomescomeinpairs,andtherearehundreds,sometimesthousandsofgenesinonechromosome.ThechromosomesandgenesaremadeofDNA,whichisshortfordeoxyribonucleicacid.
Chromosomesarefoundinsidecells,theverysmallunitsthatmakeupalllivingthings.Acellissotinythatyoucanonlyseeitthroughthelensofastrongmicroscope,andtherearebillionsofcellsinyourbody.Mostcellshaveonenucleus.Thenucleus,whichissortofegg-shaped,islikethebrainofthecell.Ittellseverypartofthecellwhattodo.Howdoesthenucleusknowsomuch?
Itcontainsourchromosomesandgenes.Tinyasitis,thenucleushasmoreinformationin