（新教材适用）高中英语Unit4SpaceExplorationSectionⅠ课后习题新人教版.doc

SectionⅠListeningandSpeakingReadingandThinking

一、单句语法填空

1.(mental),IbeganmakingalistofthingsIhadtodo.?

2.Hewasamanof(intelligent)andmademuchmoney.?

3.Ithinkit’sa(universe)truth.?

4.Asanadult,youshouldbe(independently).?

5.(determine)tofocusonstudying,Jackmovedtoanothercity.?

二、根据首字母提示补全单词,完成下面小语段

1.Misexploringspaceinthe2.hoffindingoutmoreaboutthe3.u.Somescientistswere4.dtomake5.vtocarrybravepeopleintospaceforthesecrets.However,theymustbecareful.Ifthere’samistakeduringthe6.l,itcankilleverybodyon7.b.?

三、阅读理解

Here’salistofsomeinterestingfactsaboutstars.

ThesunisthecloseststartoEarth.Thesunisabout150millionkilometresaway.Oursun,likemostotherstars,givesoffpowerandlightbynuclearfusion(核聚变),whichhappensexactlywhereit’sthehottest.Thesunisabout4.5billionyearsoldanditwillstilllastsixbillionyearsorso.Whenitrunsoutofitsfuel(燃料),itwoulddevelopintoaredstarandincreaseinsize.

Sincestarsarebillionsoflightyearsaway,itmaybehardtorecognisethatstarsareincontinuousbattleswiththemselves.Allthestarshavetheirowngravitationalpull(引力)thatpullsthem.Thesurprisingpartisthatthenuclearfusionoccurringinsidethestartrulyproducesanoutward(向外的)pushtoresist(抵抗)thegravitationalforce,whichkeepsitspresentshape.

Starshavedifferentcolours.Thehotteststarsaresurprisinglythesmallestonesandareblueincolour.Theirtemperaturesgotoabout12,000kelvin.Althoughtheyellowcolouredstarsarethemiddlesizedonesjustlikethesun,theirtemperaturesfalltoabout6,000kelvin.Andlastly,thecoolestandgreatestonesarecolouredredandthetemperaturesofthemareabout3,000kelvin.

Whenlookingatthenightsky,wemaythinkthatstarsareuptherealone.Butdon’tbesurprisedthattheseheavenlybodiesinfacte