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。

641] Please ______ that you have closed all the windows and turned off the lights before you leave the room.

[译文] 在你离开房间之前请查一下你是否把所有的窗子和灯都关上了。

　 A. make sure 　 B. be sure

　 C. bring out 　 D. hold up

[答案及简析] A。 be sure 有把握，确信；make sure 务必，一定，千万。

640] When he was sixty years old, he _____ his hometown.

[译文] 当他60岁的时候，他就回到了他的故乡。

　 A. returned 　 B. returned back

　 C. returned to 　 D. went back

[答案及简析] C。 return 归来，回来，不再和副词back连用。

639] ______ you understand the rule, you can do it well.

[译文] 你一旦理解了规则，你就会把它做好。

　 A. For 　 B. As

　 C. Once 　 D. While

[答案及简析] C。 once连词，引导状语从句，"一旦"。