(共24套)最新高考英語語法專練大全(全套)精講附練習(xí)匯總(打包下載)

1、副詞基礎(chǔ)題組訓(xùn)練（五題）1、Jackisgoodatdrawing.Ithinknoonedraws_.betterB.bestC.worseD.worst2、Wearedoingalottoprotectourenvironment,butitisnotgoodenough.Soweshouldtry_tolookafterit.hardB.harderC.hardestD.hardly3、Whenheheardacryforhelp,heranoutas_ashecould.hardlyB.quicklyC.finallyD.slowly4、Thebagthatmygrandpamadef

2、orme_getsoutofstyle,butitisstillthebestthinginmymind.usuallyB.normallyC.graduallyD.unusual5、DidKatedobestinthefinalexam?No,butofallthestudentsshedid_.themostcarefulB.morecarefulC.mostcarefullyD.morecarefully拔高題組訓(xùn)練（十題）1、Steveisgoodatwritingshortstories.Soheis.Buthewrites_thanus.Sohecantgetgoodgradesi

3、nwriting.A.mostcarefullyB.morecarefullyC.lesscarefullyD.leastcarefully2、Aliceexplainsthingsverywell;whatshesaysscanbeunderstoodveryA.quietlyB.carefullyC.slowlyD.clearly3、Mrs.Smithhasacutebaby.Itoftensmilesatpeople_.A.friendlyB.lovelyC.happilyD.lively4、Inthepianocontest,mybrotherdidntplaywellandIdid_

4、.A.verywellB.muchbetterC.verygoodD.evenworse5、Ithinkwinterisabeautifulseason,_whenitsnows.Me,too.A.speciallyB.especiallyC.probablyD.properly6、Ifyoudontwork_enough,Idontthinkyourdreamwillcome_.A.hardly;trulyB.hardly;trueC.hard;trueD.hard;truly7、Hesaidhewouldcometoseeus_thenextafternoon.A.sometimeB.so

5、metimeC.sometimesD.sometimes8、InChinaitisacustomtogiveyoungkidsluckymoney,_duringtheSpringFestival.A.finallyB.luckilyC.simplyD.especially9、Pleasereadeverysentence_.Themore_youare,thefewermistakesyoullmake.A.carefully;carefulB.careful;carefulC.careful;carefullyD.care;careful10、OfalltheteamsinNBA,Ithi

6、nktheLosAngelesLakersplayed_thisyear.A.mostsuccessfullyB.themoresuccessfullyC.verysuccessfullyD.muchmoresuccessfully疑難題組訓(xùn)練（五題）1、Asweallknow,smokingisbadforus,_forchildren.A.especiallyB.recentlyC.probablyD.nearly2、GuoYuedidquite_attheWorldTableTennisChampionship,butZhangYiningdideven_.A.better;wellB.

7、well;wellC.well;betterD.better;better3、Dontworry,sir.ImsureIcanrun_tocatchupwiththem.A.fastenoughB.enoughfastC.slowlyenoughD.enoughslowly4、Susanenjoyswalkingattimes,but_sheridesbackhome.A.mostlyB.almostC.nearlyD.most5、Itsalmostimpossiblefor_fewpeopletodo_muchworkin_ashorttime.A.so;so;soB.so;so;suchC

8、.such;such;suchD.such;such;so附加答案：15ABBCC110CDCDBCADAA15ACAAB冠詞基礎(chǔ)題組訓(xùn)練（五題）1、Look!Thereis_catinthetree.A.aB.anC.theD./2、Lily,pleaseopen_door.A.aB.anC./D.the3、Mysistercanplay_pianoverywell.A.aB.anC.theD./4、_oldmanbehindMaryis_universityteacher.A.An,anB.A,theC.The,aD.The,an5、_Brownswerehavingdinnerwhent

9、hetelephonerang.A.AB.TheC.AnD./拔高題組訓(xùn)練（十題）1、Whatdoyouusuallyhavefor_dinner,Peter?A.aB.anC./D.the2、Peopleoftengoskatingin_winter.A.aB.anC.theD./3、Iusuallygooutfor_walkafter_dinner.A.a,/B./,theC.a,aD.the,a4、Myfatherusuallyreadsmorningpapersbeforegoingto_work.A.theB.aC.anD./5、YesterdayIcaught_badcoldand

10、hadtostayin_bedallday.A.a,theB./,/C.a,/D./,the6、Thereis_appletreeinmygarden.TOC o 1-5 h zA.theB.aC.anD./7、Theeducationoftheyoungisalways_hotandserioustopic.A.theB.aC.anD./8、Thats_verythingIvebeenlookingfor.A.aB.anC.theD./9、Wesaw_elephantinthezoo._elephantwasfromIndia.A.a,TheB.the,AnC.an,TheD.the,A10

11、、_UnitedNationswasfoundedin1945.A.TheB.AC.AnD./疑難題組訓(xùn)練（五題）1、Its_niceday,isntit?Yes,what_fineweather.A.a,aB.the,theC.a,/D.the,/2、Wecansee_sunand_moonin_picture.A.a,the,thethe,a,theC.a,the,aD.the,the,the3、Wecantsee_sunat_night.A.the,theB.the,/C.a,/D./,/4、_oldladywithwhitehair_spokeEnglishwellat_meeting

12、.A.An,an,aThe,/anC.The,/,aD.The,/,the5、Mom,Ineedtimetorelax.DontyouknowallworkandnoplaymakesJack_dullboy?Yes,Ido.ButIalsoknowhardworkleadsto_success.A.the,theB.a,theC.an,/D.a,/附加答案：15ADCCC110CDADC;CBCCA15CDBDD冠詞綜合練習(xí)答題時(shí)間：45分鐘）、單選WhichcityinEnglanddoyouthinkmaybecalledShanghaiofWest?A.a;theB.the;不填C.t

13、he;theD.不填;theDr.SmithwantsassistantwithgoodknowledgeofEnglish.A.the;theB.an;theC.an;aD.不填;不填Whatdoesheruncledo?Heisaprofessorofuniversityandheishonestman.A.the；anB.a；aC.an；anD.a；anYoumadethesamemistakeforsecondtime,dropping“n”intheword“government”.A.a;theB.a;aC.the;anD.a;anItsquiteobviousthattheagi

14、ngpopulationinChinawillcause_heavypressureonwholesocietyinthefuture.A.a;aB.the;不填C.a;theD.不填;theThepoetandwriterisgoingtogiveusatalkthisafternoon.A.aB.theC.不填D.anHerhusbandwasputintoprison,andshehadtogotoprisononceamonthtovisithim.A.a;theB.the;theC.不填;不填D.不填;theWuDongistalleroftwobrothers.A.不填;theB.

15、the;不填C.不填;不填D.the;theTheteacherisstandingoftheteacherstable,whichisoftheclassroom.A.infront;infrontB.infront;inthefrontinthefront;inthefrontD.inthefront;infrontIaminchargeoftheclasswhichwasinchargeofmywife.A.不填;theB.不填;不填C.the;不填D.the;the二、改錯(cuò)Igotoschoolbyabikeeveryday.Westudythemathsthisterm.Theyre

16、havingasuppernow.Asunisbiggerthanthemoon.Hewasfirsttocometothemeeting.ThreehundredsofstudentswenttotheparklastSunday.Heisill.Soheisinthebed.ThestudentandtheYoungPioneerisgoingtohelptheoldman.Pleasegivemearice.WangMeiplaysapianoverywell.Openwindows,please.Thereisadogintheroom.Adogishers.Thereisa“m”in

17、theword“may”.ItstheAprilnow.Theboyisinhistwenty.三、在橫線處填入適當(dāng)?shù)墓谠~Mydear!Haveyouhadapple?BlackHorseisinterestingbookforchildren.Sheisusefulmemberofvolleyballteam.doctortoldhimtotakemedicinethreetimesday.Lookatsun!Itsfinedayforwalktoday.JapanistoeastofChina.Whatwouldyoulikeforsupper,MrGreen?Playingfootbal

18、lisbestsportinspring.冠詞綜合練習(xí)參考答案C。解析：theWest（西方、西洋）是固定搭配；指類似于的人或物時(shí)，專有名詞前用冠詞，而Shanghai又受oftheWest修飾，所以用the。C。解析：第一空an用于以元音音素開頭的詞前；第二空泛指有英語知識(shí)的人。D。解析:不定冠詞a用于以輔音音素開頭的詞前（指發(fā)音而不是字母），如:auniversity；而an用于以元音音素開頭的詞前，如anuncle/anhonestman.D。解析：第一空是序數(shù)詞前用a表示“又一”；輔音字母n,f,h,l,m,n,r,s,x和元音字母a,e,i,o的讀音，均以元音開頭，所以第二空填an。

19、C。解析：第一空是泛指用a,aheavypressure意為“一種很大的壓力”；當(dāng)whole修飾單數(shù)名詞表示“全（部的），整個(gè)的時(shí)，前面用ones或the,又如thewholeevening/truth整個(gè)晚上/全部真相。C。解析：and前后連接的是同一事物同一人同一概念時(shí)，其后的名詞前不用冠詞。D。解析：比較：putintoprison=坐牢；gototheprison=去監(jiān)獄。D。解析：“the+形容詞比較級(jí)+ofthetwo+名詞復(fù)數(shù)”結(jié)構(gòu)表示：兩者中較的一個(gè)。B。解析：infront。彳=在前面（指范圍之外）；inthefront。彳=在前部（指范圍之內(nèi)）。A。解析：inchargeo

20、f的意思是“負(fù)責(zé)、“管理”，其主語通常是人；inthechargeof的意思是“由負(fù)責(zé)或管理”，其主語通常是人。去掉a去掉the去掉aAThefirst前加thehundredsofhundred去掉theisareasomeathewindows前加theATheaan去掉thetwentytwentiesan2.an,/3.a,the4.The,the,a5.the,a,a6.the,/7./,/8./,the,/介詞基礎(chǔ)題組訓(xùn)練（五題）1、Itsnicetohaveawalk_acoolsummerevening.A.inB.atC.forD.on2、Theoldwomanlives_a

21、smallvillage.Itis_twohills.A.in;amongB.at;amongat;keepD.in;between3、Wearedoingbetter_English_ourteachershelp.A.in;atB.at;inC.in;withD.with;with4、Whenistheparty?Its_Saturday.A.inB.onC.atD.for5、Hemakesaliving_sellingnewspaper.A.inB.forC.byD.with拔高題組訓(xùn)練（十題）1、Therewillbemanyrobots_peopleshomes_tenyears.A

22、.in;/B.in;inC.at;/D.in;after2、Ipaid25yuan_thebeef,andIonlygotalittle.A.forB.onC.inD.to3、Sinceyouare_danger,whynotask_help?A.in;forin;towith;forD.with;to4、Youcantfindawaytoreachyourgoalswhenyouareproud_yourselfandstandtalllikeasunflower.A.onB.fromC.ofD.by5、Welookedateachother_surprisewhenweheardabird

23、singing“Happybirthdaytoyou”.A.inB.toC.byD.at6、Lilycelebratedhertwentiethbirthday_April26th,2008.A.inB.atC.onD.for7、Dad,lookatthebuilding.Itisonfire.Call119_themobilephonerightnow.A.inB.byC.atD.with8、AUFOlanded_theCenterStreet.A.atB.onC.inD.for9、Theywillraisemoney_theplayground.A.onB.forC.inD.at10、Wh

24、enwillthepartybeheld?_twoweekstimeA.AfterB.InC.OnD.At疑難題組訓(xùn)練（五題）1、LinJingoftenpracticesEnglish_chattingwithherAmericanfriends.A.inB.byC.forD.with2、Theyoungmenwalked_theforestandcametoabigriveratlast.A.onB.overC.throughD.across3、Andymoved_Hangzhou_September,2008.A./;inB.to;inC.to;onD.In;in4、Igotoschoo

25、l_8oclockinthemorning.A.atB.inC.onD.for5、Shewillleaveherhomework_theteachersdeskafterschooltoday.A.fromB.toC.forD.on附加答案：15DDCBC110BAACACDBBB15BCBAD(1)1.閱讀下列短文，掌握其大意，然后從1635各題所給的A、B、C、D四個(gè)選項(xiàng)中，選出最佳選項(xiàng)。Themeasureofamansrealcharacteriswhathewoulddoifheknewhewouldneverbefoundout.ThomasMacaulaySomethirtyye

26、arsago,IwasstudyinginapublicschoolinNewYork.Oneday,MrsNanetteONeillgaveanarithmetic26toourclass.Whenthepaperswere27shediscoveredthattwelveboyshadmadeexactlythesamemistakesthroughoutthetest.Thereisnothingreallynewabout28inexams.PerhapsthatwaswhyMrsONeill29evensayawordaboutit.Sheonlyaskedthetwelveboys

27、to30afterclass.Iwasoneofthetwelve.MrsONeillasked_31questions,andshedidntscolduseither.Instead,shewroteontheblackboardthe32wordsbyThomasMacaulay.Shethenorderedusto33thesewordsintoourexercise-booksonehundredtimes.Idont34abouttheotherelevenboys.Speakingfor35Icansay:itwasthemostimportantsingle36ofmylife

28、.Thirtyyearsafterbeing37toMacaulayswords,theyseemtomethebestyardstick（準(zhǔn)繩），becausetheygiveusawaytomeasureourselvesratherthanothers.ofusareaskedtomakegreatdecisionsaboutnationsgoingtowarofarmiesgoingtobattle.Butallofusarecalledupondailytomakeagreatmanypersonaldecisions.40thewallet,foundinthestreet,bep

29、utintoapocket41turnedovertothepoliceman?Shouldthe42changereceivedatthestorebeforgottenor_43_?Nobodywillknowexcept44.Butyouhavetolivewithyourself,anditisalways45tolivewithsomeoneyourespect.26.A.testB.problemC.paperD.lesson27.A.examinedB.completedC.markedD.answered28.A.lyingB.cheatingC.guessingD.discu

30、ssing29.A.didntB.didC.wouldD.wouldnt30.A.comeB.leaveC.remainD.apologize31.A.noB.certainC.manyD.more32.A.aboveB.commonC.followingD.unusual33.A.repeatB.getC.putD.copy34.A.worryB.knowC.hearD.talk35.A.myselfB.ourselvesC.themselvesD.herself36.A.chanceB.incidentC.lessonD.memory37.A.referredB.shownC.brough

31、tD.introduced38.A.evenB.stillC.alwaysD.almost39.A.AllB.FewC.SomeD.None40.A.ShouldB.MustC.WouldD.Need41.A.andB.orC.thenD.but42.A.extraB.smallC.someD.necessary43.A.paidB.rememberedC.sharedD.returned44.A.meB.youC.usD.them45.A.easierB.morenaturalC.betterD.morepeaceful2.閱讀理解（共20閱讀下列短文，小題；每小題2.5分，從每題所給的A、

32、B、C、滿分50分）D四個(gè)選項(xiàng)中，選出最佳選項(xiàng)。ADearSharonDraper,Alotofbookshaveflashesofinsight,butonlyfewofthemcanopenthereadersmindandmakethemrealizesomethingnew.Yourbook,OutofMyMind,filledmewiththosesparks.IenjoyedgettingtoknowMelody.Despitethefactthatshehadcerebralpalsy（腦癱），Melodyhadanamazingcharacterthatshonebrightl

33、y.OutofMyMindhelpedmelearnalife-longlesson.Yourbookhaschangedmypointofview.Ineverteasedthosewhohadspecialneeds,butIneverreallyfeltcomfortablearoundthemeither.WhenIstartedreadingyournovel,IsawhowMelodywasasmartandtalentedgirl.Atthebeginningofthebook,Iaskedmyself,“WouldIbeMelodysfriend?”Thevoiceinmyst

34、omachtoldmethesadtruth:no.Icarriedonwithyourbookfromstarttofinish,andwhenIclosedit,Iaskedmyselfthesamequestion,“WouldIbeMelodysfriend?”Irealized,withasmile,thattheanswerwasrightinfrontofme.ThroughoutOutofMyMind,IhadbecomeMelodysfriend.Lastyear,therewasaboyinmyclasswhohadAspergerssyndrome（阿斯伯格綜合癥）.Id

35、idntreallyknowhim;hejustseemeddifferenttome.ThiswasaroundthetimethatIreadyournovel.Melodyshowedmehowshewasjustasgoodasanyoneelseinherclassroomandhowthesamegoesforanyoneelsewithdisabilities.Theboyinmyclassamazedmebywhathewascapableofdoing.Asthedayswentby,Istartedhelpinghiminsteadofavoidinghim.Melodyo

36、penedmyeyesandclearedtheworldaroundme.Sheshowedmehowagirlwithcerebralpalsywasthesameasagirllikeme.Nowitistimeformetothankyouforwritingthisamazingnovel.Iwillneverforgetyourfantasticbook.Sincerely,MargaretLimBeforeMargaretLimreadOutofMyMind,she.oftenlaughedatthosewhoaredisabledlikedtohelpthosewhohadsp

37、ecialneedswouldntmakefriendswiththedisabledlookeddownuponthosewhoaredifferentAccordingtothepassage,theauthormainlythinksOutofMyMindis.beautifulinwordsB.influentialtoreadersC.skilfulatwritingD.successfulinsalesWhatdoesthesecondparagraphmainlytalkabout?Thecharactersofadisabledgirl.ThechangeofMargarets

38、attitudetowardthedisabled.ThefriendshipbetweenMargaretandMelody.ThemaincontentofOutofMyMind.Whatcanwelearnfromthethirdparagraph?MelodybecameMargaretLimsclassmateandtheybecamegoodfriends.TheboywhohadAspergerssyndromewasdifferentfromhisclassmates.Thedisabledcandealwithmanythingsaswellasthehealthypeopl

39、e.D.MargaretLimoftenhelpedthedisabledboysincetheybecameclassmates.SharonDraperisprobablya（n）.editorB.doctorC.teacherD.writerBLeonardodaVinci,oneofthegreatestthinkersintheworld,beganhiscareerasanartist.VerylittleisknownaboutLeonardosearlylife.Hewasbornin1452inthetownofVinci.Asaboy,Leonardoshowedagrea

40、tinterestindrawing,sculptingandobservingnature.However,becauseLeonardowasborntoparentswhowerenotmarriedtoeachother,hewasbarredfromsomestudiesandprofessions.HetrainedasanartistaftermovingtoFlorencewithhisfatherinthe1460s.ItwasanexcitingtimetobeinFlorence,oneoftheculturalcapitalsofEurope.Leonardotrain

41、edwithoneofthecitysverysuccessfulartists,AndreadelVerrocchio.Hewasapainter,sculptorandgoldworker.Verrocchiotoldhisstudentsthattheyneededtounderstandthebodysbonesandmuscleswhendrawingpeople.Leonardotooktheteachersadviceveryseriously.Hespentseveralperiodsofhislifestudyingthehumanbodybytakingapartandex

42、aminingdeadbodies.Whiletrainingasanartist,Leonardoalsolearnedaboutandimprovedonrelativelynewpaintingmethodsatthetime.Onewastheuseofperspective（透視）toshowdepth.Amethodcalled“sfumato”helpedtocreateacloudyeffecttosuggestdistance.“Chiaroscuro”isamethodusinglightandshadeasapainterlyeffect.Leonardosfirstkn

43、ownportraitnowhangsintheNationalGalleryinWashington,D.C.HemadethispaintingofayoungwomannamedGinevradeBenciaround1474.Thewomanhasapalefacewithdarkhair.Inthedistance,LeonardopaintedtheItaliancountryside.Hesoonreceivedattentionforhisextraordinaryartisticskills.Around1475hewasaskedtodrawanangelinVerrocc

44、hiospainting“BaptismofChrist.”O(jiān)nestorysaysthatwhenVerrocchiosawLeonardosadditiontothepainting,hewassoamazedbyhisstudentsskillthathesaidhewouldneverpaintagain.WhichofthefollowingisTRUEaccordingtothepassage?WecanfindLeonardosworkintheNationalGallery.Leonardothoughthisteachersadvicewasunreasonable.“Sfu

45、mato”isamethodtoshowdepthbyusinglightandshade.“BaptismofChrist”madeLeonardoknownacrosstheworld.Theunderlinedword“barred”inthesecondparagraphprobablymeans.preventedB.protectedC.sufferedD.chosenWhichofthefollowingwordscanbeusedtodescribeLeonardoaccordingtothethirdparagraph?B.Creative.D.Determined.Stub

46、born.C.Ambitious.WhichisthecorrectorderofthethingsthathappenedtoLeonardo?HefinishedthepaintingofGinevradeBenci.HemovedtoFlorence.Hefinisheddrawinganangelinhisteacherspainting.HebegantolearnartfromAndreadelVerrocchio.Hebegantostudythedeadbody.b,c,e,d,aB.d,b,c,a,eC.b,d,e,a,cD.b,e,d,a,cWhatcanwelearnfr

47、omthelastparagraph?VerrocchiodidntlikeLeonardoswork.VerrocchiothoughtLeonardosworkterrible.VerrocchiothoughthighlyofLeonardoswork.VerrocchiodidntbelieveLeonardocouldpaintwell.Notallvegetablesneedlotsofsunshine.MarkHoffmanandhiswife,Guia,ownabed-and-breakfastguesthouseinruralKempton,Illinois.Theyofte

48、nservetheirguestsproducefreshfromthegarden.TheHoffmanshavebeengrowingfoodandflowersfortwenty-fiveyears.Foralmosttenofthoseyears,Mr.Hoffmanhasbeenexperimentingandworkingwithshadeplantings.Hesaysvisitorstohiswebsiteoftenaskhowtoplantinshadespaces.Hesaid,“Thebottomlinehereisthatmostplantswillproducemor

49、einfullsun.Butifyoudonothavefullsun,thereareotheroptions.”Forexample,hegrowstomatoesnearoaktrees.Oaktreescanproducealotofshade.ButMr.Hoffmansayshistomatoplantsgrowaslongastheygetfivehoursadayofdirectsunshine,especiallymorningsun.Notonlydoesthisgoagainstthetraditionaladvicethattomatoesneedsix,eight,e

50、ventwelvehoursadayoffullsun,italsoshowshowplantsandtreesrootscansharenutrientsandwater.Mr.Hoffmanalsoplantedasparagus（蘆筍）aroundatreeatitsdripline,theareabelowtheouterlimitofthebranches.Sowhenitrains,alltheraindripsdownrightontheasparagus.TheHoffmanswebsiteincludesalistofvegetables,flowersandherbstha

51、thaveproducedacceptablyfortheminpartialshade.Mr.Hoffmansaysplantswithwiderleavesseemtodobetterinshadyenvironments.Healsofoundthathispotatoesdidbetterinpartialshadethaninfullsun.Movingthemoutofthesunhelpedcontrolaninsectproblemwithleafhoppers,Mr.Hoffmandoesnotusepesticides（農(nóng)藥）.Instead,heplantedthepot

52、atoesatthedripline,especiallyontheeastsideofthetree.Thepotatoesgetmorningsun,buttheyareshadedduringthehottestpartoftheday.Leafhoppersdislikeshade,andthehottestpartofthedayiswhentheydotheworstoftheirdamage.Timeofday,brightnessofthesun,shadowsfromtrees,wallsandbuildings,theseallinfluencehowmuchsunligh

53、tfallsordoesnotfallonplants.AndextensionagentCurtisSwiftatColoradoStateUniversitysayspeopleinterestedinshadeplantingshouldalsoremembersomethingelse.Theterm“shade”candescribedifferentamountsofdarkness.Hesaysitcanevenmeandifferentthingsindifferentpartsoftheworld.Whatstheauthorspurposeofwritingthepassa

54、ge?Topresentakindofeco-friendlylifestyle.Torecommendanapproachtomanagingawebsite.Toshowvegetablescanbeplantedintheshade.TointroduceMarkHoffmanandhisfamily.Whatcanweinferfromthesecondparagraph?Foodandflowersproducemoreintheshade.Foodgrowingintheshadecontainsmorenutrients.Suncanaffecttheproductionofso

55、meplants.Foodgrowingintheshadeisthebestchoiceformostplants.TOC o 1-5 h zByusingasparagusasanexample,theauthorwantstoexplainthat.asparaguspreferstogrowintheshadeB.howplantsandtreerootssharewaterC.vegetablesgrowbetterinpartialshadeD.howleavesgainsunshineunderthetreeTheunderlinedwords“l(fā)eafhoppers”inPar

56、a.5maybeakindof.plantsB.pesticidesC.insectsD.potatoesAccordingtothepassage,CurtisSwiftmaythinkthat.peopleshouldconsiderspecificsituationwhileplantingvegetablesinshadesomespecialrulesrelatedtoshadeplantingsshouldberemembereddifferentpartsoftheworldshouldplantdifferentkindsofvegetablesinshadeshadeplan

57、tingisinfluencedbydifferentkindsofsoilconditionDChildrenwithautism（自閉癥）havedifficultywithsocialskillsandcommunication.Theyoftenbehaveinlimitedandrepeatedwaysandhavewhatseemlikeunusualstronginterests.Autismismorecommoninboysthangirls.Whatcausesitisnotclear.Scientistsarestudyinggenesandpossibleenviron

58、mentalinfluences.Doctorsusuallycannotconfirmadiagnosisofautismuntilachildisaboutthreeyearsold.RebeccaLandaisaresearcherattheKennedyKriegerInstituteandJohnsHopkinsUniversitySchoolofMedicineinMaryland.ProfessorLandawantedtofindoutwhatdifferencesindevelopmentmightbeseenearlier.Sheledanewstudythatobserv

59、ed235babiesbetweensixand36monthsofage.“Atsixmonthsofage,thesignsofsomeriskfordevelopingcommunicationandsocialdelays,includingautism,includemotordelays,likewhenyoulayyourbabyontheirbackandyoupullthembythearmsgentlyintoaseatedposition,thebabysheadmaynodbackbehindtheshoulders,likepoorheadcontrol.Sothat

60、doesnotmeanthatthebabyisgoingtohaveautism,butitdoesmeanthebabyneedstohavesomeexercisestostrengthentheirbody.Andwhentheystrengthentheirbody,theyarebetterabletoplaywithtoysandengagewithpeople,whichthengoesontohelpthemhavebetteroutcomes.”Bythetimeababyisoneyearold,signsofpossibleautismincludedifficulty