《基础英语教学课件》unit8答案.doc

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1、KeytoUnitTestTwoLDictationHowdoeslighttravelfromthesuntotheearth?Howdoesmusicgetfromthestagetotheaudience?Theymovethesameway™inwaves!Lightandsoundareformsofenergy.Allwavescarryenergy,buttheymaycarryitdifferently.Lightandsoundtravelthroughdifferentkindsofmatter.Forexample,lightwaves

2、cannotmovethroughwalls,butsoundwavescan.Thatiswhyyoucanhearpeopletalkinginanotherroomeventhoughyoucannotseethem・Theenergyofsomewavesisdestructive,forexample,anearthquakewaves.Catchawave・Askafriendtostandafewfeetawayfromyou.Stretchaspringbetweenyou.Shakethespringtotransferenergytoit

3、.Whathappens?Thespringbouncesupanddowninwaves・Whenthewavesreachyourfriend,theybouncebacktoyou!Lightwavestravel300,000kilometerspersecond!Theycanalsotravelthroughavacuum.Thatiswhylightfromthesunanddistantstarscantravelthroughspacetotheearth!1.假设发生了一起道路交通事故，其中涉及了一辆或两辆原子能汽车，再假设它们的原子反应

4、器或者其防护罩遭到损坏。2.承蒙本世纪的一项工程壮举，不管喜欢与否（不管将来是贫或富，好与坏），英国和法国将永久结合在一块。3.让我换一种方式来解释：英国人似乎在两个方面显得尤其有天赋——一是机械发明，另外一个是文学。4.在书店里面，店员应该一直呆在不引人注目的地方，直到你浏览完了才现身。5.你从来没有在洗澡时身上滴着水或者从餐桌边嚼着东西，或者从床上头昏眼花地急冲冲地跑过去，结果只是被告知打错电话了吗？1.Heisnotcontent/contentedwithbeautifuldreams・Hewantsbeautifulrealities.2.IsEn

5、glandjustifiedinruling/holdingIndia?IsitjustifiablethatEngland(should)ruleIndia?3・Pleasedon，tposeasanauthority.4.Maryhas(shows)muchaptitudeformusicandart.5.1canassureyouofmyfullsupport.7.Hebrowsesamongbooksforalongtimetohishearfscontentwhenheisinabookshop.(Hehasagoodbrowse---)&Imen

6、tionedthisbywayofillustration.9.Tomeettheneed/demandofBand4/TEM4,wemustmakeconstanteffort(s).10・Pleaseputthebikeintheroomtogetshelterfromthesunandtherain.Martinwasincompleteignoranceof...Businesshasatendencyto..・Grantedthatheis…Hisoptimismblinded・・・Harnessatomicpowerinacar,andyouUl

7、•・・•…causeareleaseofenergy.TheinaugurationoftheCECFwasheldyesterdaybytheleadersofprovince.Theworker^gatheringforebodesastrike.Wefindenjoymentinbooks.Thematerialisfire・resistant/resistanttofire>