人教版高中英语必修三Unit4AstronomythescienceofthestarsLearningaboutLanguage课时作业.docx

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1、⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯名校名推荐⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯Unit4Astronomythescienceofthestars课时作业learningaboutlanguage一、单词拼写1．Itcosthimmorethanone________(十亿)dollarstocompletetheproject.2．"Whathappened？"John'smotheraskedhimina________(温和的)voice.3．BeforetheEarth'sprotective________(大气层)was

2、formed，therewasnolifeexceptinthesea.4．Withthe________(引力)ofthemoonandthesuneachday，tides(潮汐)rollinandrollaway.5．Man-made________(卫星)areusedforsendingandreceivingmessages.6．Smoking________(乘，增加)theriskofheartattacksandotherhealthproblems.7．Eatingtoomanydessertscanbe________(有害的

3、)toone'steeth.8．Globalwarmingand________(气候)changeproblemsareperhapsthegreatestthreatstoourplanet.二、原文填空1．随后它会变成什么没有人知道，直到38～45亿年前，这团尘埃才慢慢地形成一个固体的球状物。________________________________________wasuncertainuntilbetween4.5and3.8billionyearsagowhenthedustsettledintoasolidglobe.2．地球变

4、得如此猛烈，以至于它的形状能否持久还不清楚。Theearthbecame________violent________itwasnotclearwhethertheshapewouldlastornot.3．这就产生了一系列的反应，使得生命就有可能开始发展了。Thisproducedachainreaction，which________________________________________________________.4．而当我试着向前迈步的时候，我发觉我被送出去很远，步子的跨度竟是在地球上的两倍，因而我摔倒了。ButwhenItr

5、iedtostepforward，IfoundIwascarried________________________________ontheearthandfellover.5．"天哪，"我大声说。"引力改变了，走路也的确需要练一练了。""Oh，dear，"Icried，"walkingdoesneedabitofpractice________________gravityhaschanged."三、单选1.Thetopleadersofthetwocountriesareholdingtalksinafriendly________.-1-⋯

6、⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯名校名推荐⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯A．atmosphereB．stateC．situationD．Phenomenon2.Doctorsalwaystellusthatdrinkingtoomuch________ourhealth，butsomepeopledon'tcare.A．isharmtoB．doesharmfultoC．isharmfultoD．doharmto3.—I'mthinkingofthetesttomorrow.I'mafraidIcan'tpassthistime.

7、—________！I'msureyou'llmakeit.A．GoaheadB．GoodluckC．NoproblemD．Cheerup4.Accordingtostatistics，amanismorethantwiceaslikelytodieofskincancer________awoman.A．thanB．suchC．soD．As5.Peter'sjacketlookedjustthesameasJack's，butitcost________his.A．asmuchtwiceasB．twiceasmuchasC．muchastwice

8、asD．astwicemuchas6.Tenyearsagothepopulationofourvillagewas___