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七选五专题北京市朝阳区2020～2021学年度第一学期期中质量检测第二节（共5小题；每小题2分，共10分）根据短文内容，从短文后的七个选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。OurAmazingHandsThehandiswherethemindmeetstheworld.Weuseourhandstobuildfires,toflyairplanes,andtowrite.Thehumanbrain,withitsopen-endedcreativity,maybethethingthatmakesthehumanraceunique.Butwithouthands,alltheideaswethinkupwouldcometonothing.____36____Studyitcarefully,youwillfindsomethinginteresting.Thethumb(拇指)aloneiscontrolledbynineseparatemuscles.Thewristisagroupofbonesandmusclesconnectedwithnerves(神经).Thenervessendbranchesintoeachfingertip,whichmakesthefingersextremelyflexible.____37____Earlyhandsseemedmoreunusualandinterestingthananyhandtoday.Someanimalshadsevenfingers.Othershadeight.Butbythetimevertebrates(脊椎动物)appeared340millionyearsago,thehandhaddevelopedtoonlyfivefingers.____38____Nevertheless,therearestillmanydifferenttypesofhandsinlivinganimals.Afteryearsofresearch,scientistsarebeginningtounderstandthemolecular(分子的)changesinhands.____39____Thismakesthehandsofdifferentanimalsverysimilar.Thereisanetworkofmanygenes(基因)thatbuildsahand,andallhandsarebuiltonthatnetwork.Thediscoveryhasgivenscientistsadeeperunderstandingofthedevelopmentofhands.Abird’swingandalion’spaw(爪)mayappeartohavenothingincommon.____40____Itmayjustbealittlemoreofoneprotein(蛋白)here,alittlelessofanotherthere.Inthepast,scientistscouldrecognizeonlytheoutwardsignsthathandshaddevelopedfromacommonancestor.Todayscientistsareuncoveringtheinwardsignsaswell.A.Handscanoftenbeusedforanumberofdifferentpurposes.B.Theyalsoseethatallhandsstartoutinmuchthesameway.C.Ithaskeptthatnumberforreasonsscientistsdon’tyetknow.D.Noonewoulddoubtthatthefivefingersaredifferentwitheachother.E.Butthedifferencebetweenthemmaycomedowntoatinychangeinform.F.Thereasonwecanuseourhandsforsomanythingsistheirspecialstructure.G.Soyoucanseeaskilledwatchmakerusehishandstosetspringsinplaceunderamicroscope.第二节（共5小题；每小题2分，共10分）36．F37．G38．C39．B40．E北京市海淀区2021届高三英语第一学期期中练习第二节（共5小题；每小题2分，共10分）根据短文内容，从短文后的七个选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。IsManagingKids'ScreenTimeaGoodIdea?Screentimeisabigtopicofconversationintoday'shouseholds,particularlyduringthepandemicwhenonlineeducationhourshavemultipliedformanystudents.36Theyhopetosparetheirkidsfromthecountlesschallengesthattechnologycanbring.Yetthechallengesofscreentimeoveruseseldomcomefromkids'devicesthemselves,butratherfromthetenserelationshipsthattechnologycanbringtofamilies.37Buttechnologyhaspositivebenefitstoo.Sinceeverychildandfamilyisdifferent,managingscreentimecallsforjointfamilydecision-making.Ifparentsbelievetheycanmanageachild'sscreentimethroughadolescence,theyarenotonlyfoolingthemselvesbutalsoinvitingrelationshiptroublewiththeirteens.Itisamythtothinkthatparentscanorshouldmanagetheirkids'screentimethroughauthoritarianrestrictions,evenduringelementaryschool.38Whenchildrenareleftoutofthosedecisions,theyoftenbecomelesscommunicativewithparentsandsiblings.Thisistheoppositeofwhatparentswanttoachieve.39Fromearlyages,childrenarequitecapableofunderstandingthatagoodlifeinvolvesawarenessandbalance.Justastheylearnrightfromwrong,andgoodfrombad,theycanalsolearntousetechnologyinhealthyways.Learninghowtoregulateoneselfanddevelophealthybehaviorsisoneoftheprimarytasksofchildhoodandadolescence.Whathappenswhenanadulttriestoregulateachildisthatthechildmissesoutontheopportunitytolearnforthemselves.Enforcedrestrictionscanalsomakechildrenfeelhelplessandlessconfident.Tobeclear,thisarticleisnotsuggestingthatfamiliesneveruseappsortrackers,orthatthereshouldbenorestrictionsonscreentime.40Parentsshouldgivevoicetochildrenandinvolvethemintheplanninganddecision-makingprocess.A.Ofcourse,therearewebsitesthatareunhealthyforkidstoaccess.B.Thealternativeistoinvolvechildrenindecisionsthatgovernscreentime.C.However,everyfamilyneedsafamilymediaplanbetweenfamilymembers.D.Thegoalistosee,hear,feel,andunderstandhowchildrenviewscreentime.E.Tomanagechildren'sscreentime,parentshaveinvestedinappsandtrackers.F.Togetchildreninvolved,parentsshouldtrustanddevelopkids'self-awareness.G.Whatitissuggestingisthatparentslookatmanagingscreentimeinadifferentway.第二节36.E37.A38.B39.F40.G北京市密云区2021届高三上学期期中考试英语试题第二节（共5小题；每小题2分，共10分）根据短文内容，从短文后的七个选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。ClaustrophobiaClaustrophobia,orfearofenclosedspaces,isoneofthemostcommonfears.Claustrophobiacanbedeepfearorevenpanicasaresultofbeinginasmallspace.Claustrophobiacandevelopafteratroublingchildhoodexperience(suchasbeingtrappedinasmallspaceduringachildhoodgame),orfromanotherunpleasantexperiencelateroninliferelatedtosmallspaces(suchasbeingstuckinalift).36Thisresponsethenbecomesprogrammedinthebrain,makinganassociationbetweenbeinginatightspaceandfeelinganxiousorout-of-control.Asaresult,thepersonoftendevelopsclaustrophobia.AccordingtoMarkPowers,Ph.D.,AssociateProfessorofPsychologyatSouthernMethodistUniversity,“Claustrophobiaisaspecificfearandnotatypeofpanicdisorder.Theprimaryspecificdangerforecastsforclaustrophobiaarethateitherthepersonwillbetrappedorrunoutofair.”37Claustrophobiasymptomscaninclude:sweating,acceleratedheartbeat,upsetstomach,passingou