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"。

638] The room ____ voices of the children.

[译文] 房间里充满了孩子们的声音。

　 A. filled with 　 B. was filled with

　 C. full of 　 D. was full with

[答案及简析] B。 be filled with "充满"。

637] I can hardly heat the radio. Would you please ______?

[译文] 我几乎听不到收音机了。请把他开大一点好吗？

　 A. turn it on 　 B. turn it down

　 C. turn it up 　 D. turn it off

[答案及简析] C。 turn up 开大一些；turn off关掉； turn on 打开；turn down关小一些。

636] They made an important decision ______ the end of the meeting.

[译文] 在会议结尾时他们做了一个重要的决定。

　 A. in 　 B. by

　 C. on 　 D. at

[答案及简析] D。 at the end of 固定搭配"在…结尾"，"在…底／末"。

635] The boy was not allowed ______ his brother’s bike.

[译文] 不容许这个小孩用他哥哥的自行车。

　 A. to use 　 B. using

　 C. use 　 D. used

[答案及简析] A。 考查动词的用法be allowed to do sth.被容许做什么。

634] He _____ tasted the mixture and give a smile.

[译文] 他很高兴地尝了尝混合物然后笑了笑。

　 A. glad 　 B. gladly

　 C. was glad 　 D. was glad to be

[答案及简析] B。 副词才能修饰动词。