西安交通大学网络学院新版大学英语四-答案

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1、《政府采购制度》公共课程系列——《大学英语四》作业集西安交通大学网络教育学院刘仙泉编-10-《政府采购制度》Unit1EducationI.CommunicativeEnglish（ChoosethebestAnswer）1.B2.A3.A4.A5.CII.Vocabularyandstructure6.D7.C8.B9.C10.AIII.Cloze11.A12.B13.A14.B15.D16.C17.B18.D19.D20.AIV.ReadingComprehensionPassage121-25.BDADBPassage2Oilissoimportantthatiti

2、ssometimescalled"blackgold".Almosthalfofourenergycomesfromoil.Weuseittorunourcarsandfactoriesandtoheatourhomes,officesandschools.Manyeverydaythingsaremadefromoil.Yourshirtmayhaveoilinthematerial.Thesoapyouwashyourhandswithmightalsobemadefromoil.Yourfavoriteplastictoyismadefromoil.Oilishar

3、dtofind,becauseitistrappeddeepundertheearth.Oncetheonlywaypeopleknewtherewasoilsomeplaceifitleakedoutoftheground.Today,however,wehavemanywaysoffindingoil.Onetoolmeasuresthepullofgravity.Placeswheregravityisweakeraremorelikelytohaveoil.Anothertoolissoundwaves.Soundwavestravelthroughdiffere

4、ntkindsofrocksatdifferentspeeds.Wecanusethemtofindtherocksthathaveoilinthem.Weneedalotofoil,andweareusinguptheoilwellsweknowabout.Soonwemustfindnewwaysoflookingforthis"blackgold".26-30.BACBD-10-《政府采购制度》V.Translation31.很多的能源浪费是由于摩擦引起的。32.如果你坐船穿越太平洋，你要跨过日界线。33.那个穿白衬衣的女孩是谁？Unit2Technologyand

5、lifeI.CommunicativeEnglish（ChoosethebestAnswer）1.A2.C3.A4.C5.AII.Vocabularyandstructure6.D7.C8.D9.A10.BIII.Cloze11.C12.D13.D14.B15.A16.C17.D18.D19.C20.BIV.ReadingComprehensionPassage121-25.CCDABPassage2.26-30.BACBD-10-《政府采购制度》V.Translation31.我每天晚上都满有兴趣地读当地的报纸。32.我用包把脸连挡住，避开烟雾和热气。33.他在音乐和绘

6、画方面都很有天赋。-10-《政府采购制度》Unit3careerandachievementI.CommunicativeEnglish（ChoosethebestAnswer）1.A2.B3.C4.D5.CII.Vocabularyandstructure6.B7.A8.A9.C10.AIII.Clozes.11.D12.A13.B14.D15.C16.B17.A18.C19.B20.CIV.ReadingComprehensionPassage121-25.CDCBCPassage226-30TTTTTV.Translation26.他总是积极参与学生活动。32.他对

7、他的新车非常满意，第二天他就开上去上班了。33.火灾可能比地震危害更大。-10-《政府采购制度》Unit4TheartoflivingI.CommunicativeEnglish（ChoosethebestAnswer）1.C2.B3.B4.C5.AII.Vocabularyandstructure(6.A7.B8.D9.A10.BIII.Cloze11.D12.C13.C14.D15.C16.A17.A18.C19.A20.CIV.ReadingComprehension(Choosethebestanswerforeach