高中英语选修7电子题库Unit2ChallengingYourselfI课时训练

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'高中英语选修7电子题库Unit2ChallengingYourselfI课时训练'
Ⅰ.单项填空1.It matters little _________ a man dies,but ________ matters much is _______ he lives.A.how;what;how      B.how;it;howC.why;it;why D.that;what;that解析:选A。第一个空用how引导主语从句,it在句中作形式主语;第二空用what引导主语从句,what在从句中作主语,第三空用how引导表语从句。2._________ from space,the earth,with water________seventy percent of its surface,looks a “blue ball”.A.Seen;covered B.Seeing;coveringC.Seeing;covered D.Seen;covering解析:选D。句意:从太空中看,被水覆盖了百分之七十的地球,看起来像是一个蓝色的球。seen是过去分词作条件状语,与主语earth是被动关系。第二个空用covering,因为cover与water是主动关系。3.I was ________ when I saw the nasty gash in her arm.A.frighten B.frighteningC.frightened D.fright解析:选C。句意:她胳膊上又深又长的大伤口吓坏了我。frighten作动词表示“使害怕”,此处用被动语态的形式。4.—Have you ________ some new ideas?—Yeah.I’ll tell you later.A.come about B.come intoC.come up with D.come out with解析:选C。come about 发生;come into 形成;come up with 想出;赶上,根据句子中后面的“新的观点”可知选C。5.Believe it or not,Levy’s sister suddenly _________ tears when we were eating.A.burst out B.burst inC.burst into D.burst on解析:选C。句意为:不管你信不信,Levy的妹妹在吃饭时突然大哭。burst into tears=burst out crying 放声大哭。6.It was cruel ________.A.of Jim to shoot at the birdB.for Jim to shoot at the birdC.to shoot the bird of JimD.of Jim to shoot the bird解析:选D。句意为:基姆射死小鸟很残忍。shoot at sth.向某物射击;shoot sth.击中,射中,根据句意可排除A、B项。it is...of sb.to do sth.是固定句型。7.—Have you told the news to him?—Not yet.His line is busy.I can’t ________.A.get through B.ring backC.put down D.hold on解析:选A。get through 接通;ring back 回电话;put down 放下;hold on坚持,根据句中提到的“线路正忙”可知选A。8.How did it________ that humans speak so many different languages?A.come out B.come offC.come about D.come round解析:选C。come out 出版;come off 离开,实现;come about 发生;come round 苏醒。根据句意可知是询问“如何发生”,因此选C。Ⅱ.阅读理解AEuropeans should try to stay indoors if ash from Iceland’s volcano starts settling,the World Health Organization warned Friday as small amounts fell in Iceland,Scotland and Norway.WHO spokesman Daniel Epstein said the microscopic(微小的)ash is potentially dangerous for people when it starts to reach the Earth because inhaled(吸入)particles can enter the lungs and cause respiratory problems.And he also said Europeans who go outside might want to consider wearing a mask.Other experts,however,weren’t convinced the volcanic ash would have a major effect on peoples’ health and said WHO’s warnings were “hysterical.” They said volcanic ash was much less dangerous than cigarette smoke or pollution.Volcanic ash is made of fine particles of fragmented volcanic rock.It is light gray to black and can be as fine as talcum powder.During a volcanic eruption,the ash can be breathed deep into the lungs and cause irritation even in healthy people.But once it falls from a greater distance—like from the cloud currently hovering above Europe—its health effects are often minimal,experts say.“Not all particles are created equal,” said Ken Donaldson,a professor of respiratory toxicology at the University of Edinburgh,“In the great
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