河北专升本考试英语练习题（三）　　

11. When Edison died, it was proposed that the Americans _______ all power in their homes, streets and factories for several minutes in honor of this great man.

　　A. turn off B. turned off C. must turn off D. must have turned off

　　【答案】A

　　【解析】考查虚拟语气。句意：爱迪生去世时，有人建议美国人关掉家中、街道上和工厂里的电力供应来纪念这位伟人。It is/was proposed that其后的从句用虚拟语气，动词形式为“ should+动词原形”, should可省略。

　　12. ________ are afraid of difficulties; we are all determined.

　　A. None of us B. Not all of us C. All of us D. All of us not

　　【答案】A

　　【解析】考查不定代词。句意：我们都下定了决心，没人害怕困难。根据句意及后面的all可知此处应使用表示全部否定的词，故选A。当句中出现never, neither, nothing, none, nobody, nowhere等，就表明全部否定。

　　13. The authority urged the rebellious party to ________ their arms and come back to the negotiating table.

　　A. lay over B. lay off C. lay out D. lay down

　　【答案】D

　　【解析】考查动词短语搭配。句意：当权者强烈要求反抗者放下武器，重新回到谈判桌前。lay over(长途旅行期间)短暂停留;lay off解雇(雇员);lay out展开，铺开，布置;lay down放下，停止使用。根据句意，选D。

　　14. ________ all of us who are here tonight, I would like to thank Mr. Smith for his speech.

　　A. On account of B. On behalf of C. For the purpose of D. Instead of

　　【答案】B

　　【解析】考查介词短语辨析。句意：我谨代表今晚所有到场的人感谢史密斯先生的致辞。on behalf of代表;on account of因为，由于;for the purpose of为了……目的;instead of代替，而不是。

　　15. You cannot be ________ careful when you drive a car.

　　A. very B. so C. too D. enough

　　【答案】C

　　【解析】考查情态动词固定搭配。句意：你开车时越小心越好。“cannot … too+形容词”，表示“无论怎样……也不过分”。

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