1. (　　)I'm mistaken, I've seen that man before.

　　A. Unless

　　B. If

　　C. Because

　　D. Provided

　　【参考答案】A。词义辨析。unless若不，除非，如：He won’t go to sleep unless you tell him a story.除非你给他讲故事，他才肯睡觉。provided及providin9意为“只要，以…为条件”，后接that从句。

　　2.We use plastics (　　)wood and metal now.

　　A.to take place

　　B.to take of

　　C.take the place of

　　D.In place of

　　【参考答案】D。短语辨析。take the place of接替，如：There is no one suitable to take Bill’s place when he leaves.比尔离职后没有人适合接替他。in place of代替，如：Dave was ill，so 1 went to the conference in his place.戴夫病了，所以我代替他参加了会议。前者有完全取代之意，后者只是暂时的，因此in place of符合句意。

　　3.I spent half an hour (　　)this difficult math problem.

　　A.having worked on

　　B.to work on

　　C.on work

　　D.working on

　　【参考答案】D。习惯用法。spend some time(some money)in doing sth.(on sth.)，如：She spent the whole afternoon shoppin9.她一下午都在购物。

　　4.The (　　)of the play is so great that many people want to see it.

　　A. attention

　　B. attraction

　　C. attempt

　　D. attack

　　【参考答案】B。同形词辨析。attraction吸引;attention注意力;attempt努力;attack进攻，袭击。

　　5.Do you think they have (　　)food for all these people here?

　　A. subsequent

　　B. beneficial

　　C. sufficient

　　D. average

　　【参考答案】C。词义辨析。sufficient充足的，足够的;subsequent随后的;beneficial有益的;average平均的。

　　6.The old lady (　　)on hearing her son's death.

　　A.broke in

　　B.broke down

　　C.broke out

　　D.broke away

　　【参考答案】B。短语辨析。break down禁不住痛哭，(身体、精神)垮了，如：As the funeral service began，David broke down and cried.葬礼开始后，大卫失声痛哭。break in非法闯入;break out爆发。突然发生：break away断绝关系。

　　7.His mother insisted that he (　　)the coat when going out.

　　A.put on

　　B.puts on

　　C.to put

　　D.putting on

　　【参考答案】A。本题考查虚拟语气的用法。insist后的句子中应该用(should)+动词原形的结构表示虚拟语气。

　　8.They have done things they ought (　　).

　　A.not to do

　　B.not to be done

　　C.not to have done

　　D.not having done

　　【参考答案】C。本题考查动词时态用法。ought not to have done表示不应该做的却做了。

　　9. (　　)was pointed above, this substance can be used as a substitute.

　　A.It

　　B.That

　　C. What

　　D.As

　　【参考答案】D。本题考查定语从句。本题由as引导定语从句，指代后面的整个句子，在从句中担当主语成分。

　　10.When you (　　)this over with her, you should not see her any more.

　　A.talk

　　B.talked

　　C.will talk

　　D.talking

　　【参考答案】B。本题考查动词时态用法。talk的动作发生在see her之前，又因为see her是一般现在时，因此talk要用一般过去时。