Unit4Amazing Science Topic 2 同步練習(xí)題（含答案）仁愛科普版九年級(jí)英語上冊(cè)

Unit4Topic2同步練習(xí)題基礎(chǔ)部分一、根據(jù)漢語意思寫出下列單詞的正確形式1．OntheMid-AutumnDay,peopleenjoy(欣賞)themoonatnight.2．Lindalikestravelingverymuchandnowsheisplanninghertripwith(興奮).3．WhenMarygottoschool,she(意識(shí)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、用所給詞的正確形式填空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、選詞填空用所給詞的適當(dāng)形式填空。每詞限用一次。attend；steal；regret；master；admire16．Myteacherexplainsthegrammarsoclearlythatweallitalready.17．EveryoneinmytownthemoononMid-AutumnDay.18．Tom’sbikelastweek.Sohehadtobuyanewone.19．—Whereareyourfriends?—Theyameetingintheoffice.20．Youlaterifyoudoitlikethis.綜合部分閱讀理解AAquasar(類星體)isanextremelybrightobjectwithasuper-massive(超大質(zhì)量的)blackhole.Aboutamillionquasarshavebeenknowntohumans.QuasarJ0529-4351isoneofthem,with12billionlightyearsfromtheearth.WehavebeenabletoseeQuasarJ0529-4351since1980.Butitwassobrightthatpeoplemistookitforaforegroundstar(前景恒星).In2023,scientistsfinallyidentified(確認(rèn))itasaquasaraswellasthebrightestobjectintheuniverse(宇宙),500trillion(萬億)timesbrighterthanthesun.In2024,astudyonthequasarcameoutinNatureAstronomy(《自然·天文學(xué)》).ItwasdonebyAustralianscientistChristianWolfandhisteam.Accordingtotherecentstudy,QuasarJ0529-4351hasahuge“stomach”.Likeotherquasars,itkeepstakingingasanddustinthespace.Infact,ithasthelargestaccretiondisk(吸積盤)intheuniverse.It“eats”aboutasmuchasthesun’smass(質(zhì)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(亞軌道的)flightswiththirty-minuteweightlessnessduringthethree-hourflightwillbethemostpopulartrip.However,thespacelinesmightinthefuturefacefierce(激烈的)competitionwiththeappearanceofspaceelevators(太空升降艙),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(建筑師)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、選詞填空根據(jù)短文內(nèi)容，用方框中所給詞的正確形式填空，使短文完整、正確。with

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swimIhaveapenpal.HeisfromShanghai.Hetellsmethathewill36ateacherintenyears.Helovesteaching37.HewillworkinShenzhen.Becausehewenttothis38citylastsummerandfellinlove39it.Hesayshewon’tliveinanapartmentintenyearsalone40hewillfeellonely.Helikespetsverymuch.Hethinkstheyareverycute.Buthecan’tkeepany41now.Becausehismotherhates42.Sointenyears,he’llhavelotsofdifferentpets.He43likessports.Hewillprobablygo44andskating.Hethinkshe’llgotoHongKongforholiday.Iam45hisdreamwillbeabletocometrue.六、補(bǔ)全對(duì)話根據(jù)下面對(duì)話的情境，在每個(gè)空白處填入一個(gè)適當(dāng)?shù)恼Z句，使對(duì)話意思完整。A:Ireadabooktoday.

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