Unit4Amazing Science Topic 2 同步练习题（含答案）仁爱科普版九年级英语上册

Unit4Topic2同步练习题基础部分一、根据汉语意思写出下列单词的正确形式1．OntheMid-AutumnDay,peopleenjoy(欣赏)themoonatnight.2．Lindalikestravelingverymuchandnowsheisplanninghertripwith(兴奋).3．WhenMarygottoschool,she(意识到)thatherschoolbagwasathome.4．Anadultelephant(重量是……)manytimesmorethanababyone.5．Awonderfulprogram(上演)tonight.6．Wedon’tthinkit’stoodifficultto(掌握)aforeignlanguage.7．Pleasebecarefulaboutyourcamera,oritwillbe(偷)soonerorlater.8．Alicelikesdancingandshedreamsofbeingaballet(舞蹈家)inthefuture.9．YuanLongpingiscalled“Father”ofHybridrice,andhisachievementsgo(超出)China.10．The(旅行)endsintheancientcityofMarrakesh.二、用所给词的正确形式填空11．Sincethebigfirehasalreadybeenundercontrol,nomorefiremen(send)there.12．Ifyoudon’tworkhard,you(ask)toleavesoonerorlater.13．It’ssaidthatthenewbridge(complete)attheendof2025.14．JackfinallygotAintheEnglishexam.Helookedattheexamresultwith.(excite）15．speaking,smokingisharmfultoourhealth.(general)三、选词填空用所给词的适当形式填空。每词限用一次。attend；steal；regret；master；admire16．Myteacherexplainsthegrammarsoclearlythatweallitalready.17．EveryoneinmytownthemoononMid-AutumnDay.18．Tom’sbikelastweek.Sohehadtobuyanewone.19．—Whereareyourfriends?—Theyameetingintheoffice.20．Youlaterifyoudoitlikethis.综合部分阅读理解AAquasar(类星体)isanextremelybrightobjectwithasuper-massive(超大质量的)blackhole.Aboutamillionquasarshavebeenknowntohumans.QuasarJ0529-4351isoneofthem,with12billionlightyearsfromtheearth.WehavebeenabletoseeQuasarJ0529-4351since1980.Butitwassobrightthatpeoplemistookitforaforegroundstar(前景恒星).In2023,scientistsfinallyidentified(确认)itasaquasaraswellasthebrightestobjectintheuniverse(宇宙),500trillion(万亿)timesbrighterthanthesun.In2024,astudyonthequasarcameoutinNatureAstronomy(《自然·天文学》).ItwasdonebyAustralianscientistChristianWolfandhisteam.Accordingtotherecentstudy,QuasarJ0529-4351hasahuge“stomach”.Likeotherquasars,itkeepstakingingasanddustinthespace.Infact,ithasthelargestaccretiondisk(吸积盘)intheuniverse.It“eats”aboutasmuchasthesun’smass(质量)everyday,whichmakesitgrowveryfast.Andweshouldn’tbesurprisedathowbrightitis,becausethebrightnesshasmuchtodowithhowmuchit“eats”.However,QuasarJ0529-4351isnotthelargestobject.TON618,foundin1957,isoneofthelargestblackholes.Itcanhold66billionstarsthesizeofthesuninside,whileQuasarJ0529-4351isabout19billiontimeslargerthanthesun.Scientisthavealreadylearnedthatablackholeisformedwhenastarcollapses(坍塌)onitself.Anditgrowsbytakinginotherobjects,includingotherblackholes.Buttheystilldon’tknowhowsuper-massiveblackholescomeintobeing.Scientistshopethatstudyingquasarslikethisonewillhelpthemunderstandmoreaboutsuper-massiveblackholes.Theyalsobelievethatthereareprobablymoreunusualquasarsoutthere,waitingtobediscovered.21．WhendidscientistsidentifyQuasarJ0529-4351?A．In1957. B．In1980. C．In2023. D．In2024.22．Whatdoestheunderlinedword“It”inParagraph2referto?A．QuasarJ0529-4351. B．Theforegroundstar. C．Thestudy. D．NatureAstronomy.23．WhichofthefollowingisTRUEaboutQuasarJ0529-4351?A．Itis12billionlightyearsfromthesun. B．Itis500trilliontimesbrighterthanthesun.C．Itcanhold66billionstarsthesizeofthesun. D．Itisabout19billiontimeslargerthanTON618.24．Whatdoesthelastparagraphmainlytellus?A．Whenastarcollapses. B．Howablackholegrows.C．Whyscientistsstudyquasars. D．Whatwillbediscoverednext.25．Whichcouldbethebesttitleforthetext?A．ANewlySeenQuasar B．SecretsoftheUniverseC．Super-massiveBlackHoles D．BrightestQuasarEverSeenBTodayisDecember15,2031.InfluencedbythelaunchofthefirstmannedmissiontoMarsnextmonth,youwillmostlikelygetagiftcardforaspacetrip.Theinterestinspacetripshasgrownsteadilyamongpeoplesincesuchatripbegan.Therefore,themarkethasgrownmuchlargerthisyearsincetheofficialannouncementoftheMarsmission.Morelow-costspacelineshaveenteredthemarketandyoucannowfindflightsforsuchatripforaslowas$3,495.It’sveryreasonable.Spacetourismisoneofthemarketsthathavedevelopedfastduringthelastdecade,withtheopeningoftheStarlightHotelonthemoonaswellastheloworbitalhotelsthatstartedacceptingguests.However,accommodationinspaceisstillexpensivefortheaveragehousehold,sothesuborbital(亚轨道的)flightswiththirty-minuteweightlessnessduringthethree-hourflightwillbethemostpopulartrip.However,thespacelinesmightinthefuturefacefierce(激烈的)competitionwiththeappearanceofspaceelevators(太空升降舱),liketheonethatisprojectedtostartconstructionwithintwoyears.Onceitisfullyfunctional,itwillstarttoshipcargotospace.Butitwillacceptpassengersassoonaspossibletogetbackthelargeinvestment.Eveniftheelevatorbecomessuccessful,itwilltakeseveralyearsbeforetherearemoreelevatorsintheworldtogetinthecompetitionforspacetrafficwiththespacelines.Thosewhoarelookingforalittlebitofadventureandhaveextramoneytospendmaywanttoconsiderasuborbitalflightinspace.Whileasuborbitalflightmaynotbethespacemissionthatyouhavealwaysdreamedof,itwillgiveyoutherareopportunitytoseewhatourplanetlookslikeinahigh-altitudeflightoutsideouratmosphere.Sobeforeyouenjoyatripbyelevatortospace,enjoyasuborbitalflightfirst.26．FromParagraph1,whatwillhappeninJanuary,2032?A．AgiftcardwillbetakentoMars. B．Marswillbeexploredforthefirsttime.C．ManwillgotoMarsforthefirsttime. D．Anaffordablespacetripwillcometrue.27．Theunderlinedword“average”means“________”inChinese.A．普通的 B．高收入的 C．低成本的 D．低收入的28．Whatisthespaceelevatorspurposeinacceptingpassengersassoonaspossible?A．Toshipcargotospace.B．Togetinthecompetitionbetweenspacelines.C．Tostarttheconstructionofmorespaceelevators.D．Togetbackthelargeinvestment.29．WhichofthefollowingisNOTTRUEaccordingtothepassage?A．Spacetourismhasdevelopedfastduringthelasttenyears.B．Asuborbitalflightmaybethespacemissionthatyouhavedreamedof.C．Thesuborbitalflightswillbethemostpopulartripforsometime.D．Eventhoughtheelevatorbecomessuccessful,wewillstillhavetowaitforafewyearstoseemoreelevatorscomeout.30．Wecanknowfromthepassagethat________.A．theloworbitalhotelshaveopenedsinceaspacetripbeganB．withintwoyears,spaceelevatorswillbegintoshipcargoandpeopletospaceC．duringthesuborbitalflights,youwillexperience30minutes’weightlessnessD．ifyouwanttosatisfyyourcuriosity,youmaytryasuborbitalflightCHaveyoueverimaginedwhatthehousewillbelikeinthefuture?31Weknowforcertainthatnothingisimpossible.Onethingisforsure,thatis,thehousewillbeasgreenaspossible.Thescientistswilldesignakindofhousewhichisjustlikealizard(蜥蜴).32Thehousewillturnwhiteunderthebrightsunsothatitcanbeprotectedfromstrongheat.Whenitisondarkdays,itturnsdarkandtakesinlightandheatasmuchaspossibletoproduceenergy.Manyarchitects(建筑师)intheworldwanttobuilda“treehouse”.Likealeaf,thesurfaceofthehousecollectssunlightduringtheday.33Itevencanproducefreshairforthehouse.The“root”ofthehouseisdeepundertheground.Itusessoiltocontrolthetemperatureinsidethehouse.Perhapshouseswillbebuiltasmuchaboutthefutureoffoodproductionasarchitecture.Ithasgardensontheoutsidewallofthehouse.34Justneedtowalkoutsideandcollectthevegetablesandfruitseverymorning.Lookingtothefutureisn’ttheonlywaytobegreen.35Ancienttechniquescanhelpustosaveenergyinsomeways.Forexample,wecanuseachimneyasanairconditionerbecauseitiseasierforhotairtoflowoutthechimney.A．Sovegetablesandfruitscanbeplantedonthewall.B．It’salsoagoodwaytolearnfromthepast.C．Itcanchangeitscolorastheweatherchanges.D．Theenergycanbeusedtoheatwater,produceelectricity.E．Maybeithasgardensonitswalls,orafishpoolunderitsfloor.五、选词填空根据短文内容，用方框中所给词的正确形式填空，使短文完整、正确。with

sure

child

because

be

pets

they

also

modern

swimIhaveapenpal.HeisfromShanghai.Hetellsmethathewill36ateacherintenyears.Helovesteaching37.HewillworkinShenzhen.Becausehewenttothis38citylastsummerandfellinlove39it.Hesayshewon’tliveinanapartmentintenyearsalone40hewillfeellonely.Helikespetsverymuch.Hethinkstheyareverycute.Buthecan’tkeepany41now.Becausehismotherhates42.Sointenyears,he’llhavelotsofdifferentpets.He43likessports.Hewillprobablygo44andskating.Hethinkshe’llgotoHongKongforholiday.Iam45hisdreamwillbeabletocometrue.六、补全对话根据下面对话的情境，在每个空白处填入一个适当的语句，使对话意思完整。A:Ireadabooktoday.

B: