483] The teacher tells his students to read the novel over and over again until they ______ it.

[译文] 老师要求他的学生一遍又一遍地读小说直到读懂为止。

　 A. understand 　 B. understood

　 C. have understood 　 D. have been understood

[答案及简析] A。 until 引导的是状语从句。

482] "It’s ______ warm today, let’s go swimming." "No, I don’t ______ to do. It’s ______ cold today.

[译文] "今天很暖和，我们去游泳吧！"　"不，我不想去，今天还有点冷。"

　 A. rather, hope, fairly 　 B. fairly, want, rather

　 C. rather, think, fairly　　 D. fairly, like, fairly

[答案及简析] A。 副词比较。请参见前面练习题的解释。

481] ----I have never heard it _____ before. And you ? ----The same as you.

[译文] --我以前从没有听说过谈论此事，你呢？　--和你一样。

　 A. talking about 　 B. talked

　 C. talked of 　 D. being talked

[答案及简析] C。 过去分词短语做宾补。

480] In the dark street, there wasn’t a single person _____ she could turn for help.

[译文] 在漆黑的街道，她没有一个人求助。

　 A. to whom 　 B. who

　 C. from whom 　 D. that

[答案及简析] A。 turn to固定短语，求助于。

479] She was more headstrong than ______.

[译文] 她比我们其他人都意志坚强。

　 A. the rest of us 　 B. us the rest

　 C. the other of us 　 D. us the other

[答案及简析] A。 比较级，她属一方，其他人一方。

478] The car ______ at the present speed until it reaches the foot of the mountain at about ten o’clock tonight.

[译文] 按目前速度前进，大约今天10点就可以到达山脚下。

　 A. would go 　 B. went

　 C. will be going 　 D. goes

[答案及简析] A。 情态动词用法。would表示对将来的推测。

477] Though ______, many laws of nature exist.

[译文] 尽管没被发现，许多自然规律还是存在的。

　 A. not having been discovered 　 B. having not been discovered

　 C. not having discovered 　 D. having not discovered

[答案及简析] A。 当从句的主语与主句的主语一致，可以用分词短语化简。

476] The servant did _____ she could ______ the revolutionary.

[译文] 仆人做了她该做的事来帮助革命。

　 A. what, help 　 B. that, to help

　 C. what, to help 　 D. all help

[答案及简析] C。 do what one can to do sth.是一个句型。

475] The missing boys were last seen _____ near the river.

[译文] 丢失的孩子最后看见他时，他在河边玩耍。

　 A. playing 　 B. to be playing

　 C. play 　 D. to play

[答案及简析] A。 现在分词作主与补足语，表示进行。

474] He gave me the phone number in order ______ contact him when we are in need of help.

[译文] 他给我他的电话号码以便我们需要他的帮助时好联系他。

　 A. to 　 B. of me to

　 C. for me to 　 D. that I

[答案及简析] C。 不定时表示目的。