2023学年完整版Unit4Astronomythescienceofthestars同步练习

Unit4Astronomythescienceofthestars同步练习ⅠFillintheblankwiththewordswelearned.Thenlearnthesentenceswell.1Hawkingisoneofthemostfamous___________(physic)intheworld.2____________(like)China,AustraliaisinWinterwhenChinaisinsummer.3Theyoungmanspeaks________(gentle)andeveryonelikeshim.4Thereistoomuch____________(violent)onTVwhichisbadforthehealthoftheyoung.5Somefactoriesproduce__________(harm)gases,whichpollutesour_________(大气层).6The__________(气候)isverypleasantinKunmingalltheyearround.7Thediscoveryof__________(重力)issoimportantforscience.8WecanseeliveprogramsfromAmericabecauseofman-made___________(卫星)9Wearetryingtobuildabettersocial____________(体系).10Thoughthe__________(理论)wasnotright,itaffectsmanypeopleatthattime.Ⅱ语法：主语从句(SubjectClause)：位于句首充当主语的从句。1.____we'llgocampingtomorrowdependsontheweather.A.If

B.Whether

C.That

D.Where2._____leavestheroomlastoughttoturnoffthelights.A.Anyone

B.Theperson

C.Whoever

D.Who3.___Liliwillgetbettersoonis___hermotherisworryingaboutnow.A.What;what

B.Whether;what

C.If;that

D.What;that4.Thereasonwhyhewaslateis___hegotuptoolate.A.that

B.because

C.as

D.for5.It'saquestion____weshalltaketheentranceexaminations.A.that

B.whom

C.which

D.where6.Thegirllooked___shewasworryingabouthersickmother.A.whether

B.that

C.evenif

D.asif7.____healwaysservesthepeopleverywellisknown.A.What

B.That

C.Which

D.Who8.___Marycancometothemeetingisunknown.A.Whether

B.If

C.That

D.Which9.Iwanttoknow___theleathercoatbelongsto.A.who

B.which

C.that

D.whom10.--___willgetthefirstprize?--I'msure,LiHua.A.Whodoyouthink

B.YouthinkwhoC.Doyouthinkwho

D.WhomdoyouthinkⅢ完型填空Thecoolnightsofautumnarehereto___1___

usthechillofwinterisnotfaroff.Alongwiththecoolair,thebrilliant___2___ofthesummertrianglefallinthewesttobereplacedwitharatherbland-lookingregionofsky.Butdon't___3___

initialappearancesdeceiveinthefallskyaregemsequaltosummertime.TheBigDipperswingslowthis___5___,andforpartsofthesouthernUnitedStatesit___6___sets.CassiopeiatheQueen,a___7___offivebrightstarsinthe___8___ofa"W"or"M,"reachesits___9___pointoverhead,thesamespottheBigDipperreached6months___10___.TotheeastofCassiopeia,PerseustheHeroriseshigh.NestledbetweenthesetwogroupsisthewondrousDoubleCluster—NGCs869and884—afantasticsightinbinocularsoralow-powertelescope.1.A.recall

B.retell

C.remind

D.advise2.A.stars

B.planets

C.satellites

D.subjects3.A.make

B.have

C.force

D.let4.A.Hidden

B.Tohide

C.Hiding

D.Appearing5.A.year

B.month

C.day

D.season6.A.truly

B.exactly

C.actually

D.possibly7.A.team

B.class

C.kind

D.group8.A.form

B.shape

C.figure

D.formation9.A.highest

B.lowest

C.higher

D.deepest10..A.before

B.ago

C.since

D.laterⅣ阅读理解AInJuly1994Jupiter,thelargestplanetinoursolarsystem,wasstruckby21piecesof

comet(彗星).Whenthefragments(碎片)landedinthesouthernpartofthegiantplanet,theexplosionswerewatchedbyscientisthereonearth.Butwhatifourownplanetwashitbyacomet?Theyearis2094.Ithasbeenannouncedthatacometisheadingtowardstheearth.Mostofitwillmissourplanet,buttwofragmentswillprobablyhitthesouthernpartoftheearth.Thenewshascausedpanic.On17July,afragmentfourkilometerswideenterstheearth’satmospherewithahugeexplosion.Abouthalfofthefragmentisdestroyed.ButthemajorpartsurvivesandhitstheSouthAtlanticat200timesthespeedofsound.Theseaboilsandanenormouswaveiscreatedandspreads.ThewallofwaterrushestowardssouthernAfricaat800kilometersanhour.CitiesontheAfricancoastaretotallydestroyedandmillionsofpeoplearedrowned.ThewavesmovesintotheIndianOceanandheadstowardsAsia.Millionsofpeoplearealreadydeadinthesouthernpartoftheearth,butthenorthwon’tescapeforlong.Tonsofbrokenpiecesarethrownintotheatmospherebytheexplosions.Asthesunishiddenbycloudsofdust,temperaturesaroundtheworldfalltoalmostzero.Cropsareruined.Warsbreakoutascountriesfightforfood.Ayearlatercivilizationhascollapsed.Nomorethan10millionpeoplehavesurvived.Coulditreallyhappen?Infact,ithasalreadyhappenedmorethanonceinthehistoryoftheearth.Thedinosaurs(恐龙)wereontheearthforover160millionyears.Then65millionyearsagotheysuddenlydisappeared.Manyscientistsbelievedthattheearthwashitbyaspacefragment.Thedinosaurscouldn’tsurviveinthecoldclimatethatfollowedandtheybecameextinct.Willwemeetthesameend?1.WhichofthefollowinginNOTtrueaccordingtotheauthor’sdescriptionofthedisasterin2094?A.Thewholeworldbecomesextremelycold.B.AllthecoastalcitiesinAfricaaredestroyed.C.Thewholemankindbecomesextinct.D.Thevisitofthecometresultsinwar.2.Whydoestheauthormentiondinosaurattheendofthepassage?A.Becausetheycouldonlyliveinthewarmclimate.B.Becausetheyoncedominatedtheearth.C.Becausetheirextinctionindicatesfuturedisasters.D.Becausedinosaursandhumansneverliveinthesameage3.Inwritingthepassage,theauthorintendsto____.A.giveanaccuratedescriptionofthepossibledisasterinthefutureB.provethathumanswillsoonerorlaterbedestroyedC.tellthehistoricaldevelopmentoftheearthD.warnofapossibledisasterinthefuture4.Itcanbeconcludedthatthepassageismostprobablypartofa(n)____.A.horrorstory

B.newsreportC.researchpaper

D.articleofpopularscienceBEdmundHalleywasanEnglishscientistwholivedover200yearsago.Hestudiedtheobservationsofcomets(彗星)whichotherscientistshadmade.Theorbitofoneparticularcometwasaverydifficultmathematicalproblem.Hecouldnotfigureitout.Neithercouldotherscientistswhodealtwithsuchproblems.However,HalleyhadafriendnamedIsaacNewton,whowasabrilliantmathematician.Newtonthoughthehadalreadyworkedoutthatproblem,buthecouldnotfindthepapersonwhichhehaddoneit.HetoldHalleythattheorbitofacomethadtheshapeofanellipse(椭圆形).NowHalleysettowork.Hefiguredout(解决，计算出)theorbitsofsomeofthecometsthathadbeenobservedbyscientists.Hemadeasurprisingdiscovery.Thecometsthathadappearedintheyears1531,1607,and1682allhadthesameorbit.Yettheirappearancehadbeen75to76yearsapart.ThisseemedverystrangetoHalley.Threedifferentcometsfollowedthesameorbit.ThemoreHalleythoughtaboutit,theorehisthoughtthattherehadbeenthreedifferentcometsaspeoplethought.Hedecidedthattheyhadsimplyseenthesamecometthreetimes.Thecomethadgoneawayandhadcomebackagain.Itwasanastonishingidea!Halleyfeltcertainthoughtomakeaprediction(预言)ofwhatwouldhappeninthefuture.Hedecidedthatthiswouldappearintheyear1758.Therewere53yearstogobeforeHalley’spredictioncouldbetested.In1758thecometappearedinthesky.Halleydidnotseeit,forhehaddiedsomeyearsbefore.EversincethenthatcomethadbeencalledHalley’scomet,inhishonor.5EdmundHalleyfiguredouttheorbitof____.A.somedifferentcometsappearingseveraltimesB.thesamecometappearingatdifferenttimesC.threedifferentcometsappearingatthesametimeD.severalcometsappearingatthesametime6.Halleymadehisdiscovery____.A.bydoingexperimentsB.bymeansofhisowncarefulobservationC.byusingtheworkingofotherscientistsD.bychance7.Halleymadeasurprising,butcorrectpredictionintheyear____.A.1704

B.1705

C.1706

D.17078.Thispassageingeneralisabout____.A.HalleyandotherscientistsB.theorbitofacometC.NewtonandHalleyD.Halleyandhisdiscovery9.WhichofthefollowingisTRUE?A.EdmundHalleywasanAmericanscientist.B.Halleymadehisdiscoverybydoingexperiments.C.IsaacNewtonwasafamousmathematician.D.Theorbitofacomethadtheshapeofanaround.参考答案Ⅰ

2unlike

3gently

4violence

5harmful6climate

7gravity8satellites

9system

10theoryⅡ1-5

BCBAD