651] Who has found out the answer _____ this question?

[译文] 谁找到了这个问题的答案？

　 A. of 　 B. for

　 C. to 　 D. about

[答案及简析] C。 什么什么的答案介词要to用，类似的还有：key, note, entrance。

650] We all write ______, even when there’s not much to say.

[译文] 我们都有时写写，即使我们没有什么要写的。

　 A. now and then 　 B. by and by

　 C. step and step 　 D. more or less

[答案及简析] A。 now and then = occasionally, from time to time, sometimes.

649] ----- how _____ are you driving now? -----A hundred miles an hour.

[译文] --你现在的车速是多少？　　--每小时一百英里。

　 A. fast 　 B. long

　 C. far 　 D. quickly

[答案及简析] A。 问速度，要用how fast提问。

648] -----Water! -----_________. ------ I can’t eat this. It’s too salty.

[译文] --水！　--哎，怎么啦？　--太咸了，我吃不下这东西。

　 A. Yes, sir? 　 B. What?

　 C. all right? 　 D. Pardon?

[答案及简析] A。 Yes, sir?是服务员响应别人的叫喊，并用疑问语气询问对方喊叫有什么事。

647] If you _____ finished, I’ll start clearing up.

[译文] 如果你大体上完成了，我就开始整理了。

　 A. more or less have 　 B. more and less have

　 C. have more or less 　 D. have more and less

[答案及简析] C。 more or less 或多或少，　大体上，在句中通常位于系动词，助动词，情态动词之后；行为动词之前。

646] Do you have trouble ______ the post office?

[译文] 找到邮局你有困难吗？

　 A. to have found 　 B. with finding

　 C. to find 　 D. in finding

[答案及简析] D。 have trouble/difficulty in doing sth. 做什么事费力，费劲。

645] Tom tried to make his parents _____ by making faces.

[译文] Tom想用装怪像的方法使他的父母高兴。

　 A. pleased 　 B. pleasing

　 C. please 　 D. to please

[答案及简析] A。 及物动词的过去分词表示状态。

644] -----May I speak to Mr Tom, please? ----- I’m afraid he isn’t in. Would you like to ______ a message?

[译文] --请Tom接电话好吗？　　--他不在。你留个口信行吗？

　 A. take 　 B. write

　 C. leave 　 D. tell

[答案及简析] C。 leave a message留口信。

643] -----Do you usually take a vacation? -----Yes, I like to go away______.

[译文] --你喜欢度假吗？　　--是的，我喜欢远出一年一次。

　 A. one time this year 　 B. once a year

　 C. one time a year 　 D. one time in a year

[答案及简析] B。 次数 + a year/ month/ week 是常用固定搭配，表示一年／月／周一次。

642] Her boy friend is a tall young man _____ glasses. He likes to ______ a face.

[译文] 她的男朋友是一个带着眼镜的高个子年轻人。他喜欢装怪像。

　 A. wear; make 　 B. wears; makes

　 C. with; make 　 D. wearing; making

[答案及简析] C。 第一个空用介词短语，表示伴随；第二个空缺一个动词原型。