人教版高中英语同步练习：必修3 unit 4 section ⅰ(含答案)

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1、www.ks5u.comUnit4Astronomy：thescienceofthestarsSectionⅠWarmingUp&Reading课时精练（人教版必修3，课标通用）Ⅰ.课文缩写Theearthwasjustacloudof__1__afterthe“BigBang”．Theearth__2__loudlywithfireandrock.Theywerein__3__toproducemanythings,whichweretomaketheearth'satmosphere.Astheearthcooleddown，waterbegantoa

2、ppearonitssurface.Itallowedtheearthtodissolve__4__gases.Thenlifebegantodevelop.Thefirstsmallplants__5__andfilledtheoceansandseaswithoxygen.Thisencouragedthe__6__ofearlyshellfishandfish.Landanimalssuchasinsects，reptilesanddinosaursandsoonappearedaftergreenplantsappeared.Smallclever

3、animals__7__allovertheearth.Theyareputtingtoo__8__carbondioxideintotheatmosphere,which__9__heatfromtheearthintospace.Whetherlifewillcontinueontheearthformillionsofyearstocomewill__10__onwhetherthisproblemcanbesolved.答案　1.dust　2.exploded　3.time　4.harmful　5.multiplied　6.development　

4、7.spread　8.much　9.prevents　10.dependⅡ.单词拼写1．Hewasinterestedin________(天文学)andalwaysstayedupatnighttowatchthestars.2．Computerhackershavebrokendownsecurity________(系统),raisingquestionsaboutthesafetyofinformation.3．Toomuchsugarcanbe________(伤害)tochildren'steeth.4．Thethreestarhoteloff

5、ersafriendly________(气氛)andpersonalservice.5．Whatyoudidwould________(阻止)thechildrenfromplayingcomputergamestoomuch.6．Mary's________(到场)atthepartylastnightwasnotnoticed.7．6________(乘)by5is30.8．________(理论)isbasedonpractice.9．Notlongagoa________(剧烈)earthquakeoccurredoffthecoastofInd

6、onesia.10．Mysister________(困惑)meandcausesmeanxiety.答案　1.astronomy　2.systems　3.harmful　4.atmosphere　5.prevent　6.presence　7.multiplied　8.Theory　9.violent　10.puzzlesⅢ.翻译与仿写1．LastmonthIwasluckyenoughtohaveachancetomakeatripintospacewithmyfriendLiYanping,anastronomer.翻译：_______________

7、______________________________________仿写：只有二十个学生被选出到国外学习，我很幸运成为其中一个。____________________________________________________________2．Whenwegetclosertothemoon,weshallfeelitsgravitypullingus,butitwillnotbeasstrongapullastheearth's.　翻译：___________________________________________________

8、___仿写：她和她的姐姐一样有着吸引人的嗓音。__________