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

[譯文] 老師要求他的學(xué)生一遍又一遍地讀小說(shuō)直到讀懂為止。

　 A. understand 　 B. understood

　 C. have understood 　 D. have been understood

[答案及簡(jiǎn)析] A。 until 引導(dǎo)的是狀語(yǔ)從句。

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

[譯文] "今天很暖和，我們?nèi)ビ斡景桑?quot;　"不，我不想去，今天還有點(diǎn)冷。"

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

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

[答案及簡(jiǎn)析] A。 副詞比較。請(qǐng)參見(jiàn)前面練習(xí)題的解釋。

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

[譯文] --我以前從沒(méi)有聽(tīng)說(shuō)過(guò)談?wù)摯耸�，你呢？�?-和你一樣。

　 A. talking about 　 B. talked

　 C. talked of 　 D. being talked

[答案及簡(jiǎn)析] C。 過(guò)去分詞短語(yǔ)做賓補(bǔ)。

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

[譯文] 在漆黑的街道，她沒(méi)有一個(gè)人求助。

　 A. to whom 　 B. who

　 C. from whom 　 D. that

[答案及簡(jiǎn)析] A。 turn to固定短語(yǔ)，求助于。

479] She was more headstrong than ______.

[譯文] 她比我們其他人都意志堅(jiān)強(qiáng)。

　 A. the rest of us 　 B. us the rest

　 C. the other of us 　 D. us the other

[答案及簡(jiǎn)析] A。 比較級(jí)，她屬一方，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.

[譯文] 按目前速度前進(jìn)，大約今天10點(diǎn)就可以到達(dá)山腳下。

　 A. would go 　 B. went

　 C. will be going 　 D. goes

[答案及簡(jiǎn)析] A。 情態(tài)動(dòng)詞用法。would表示對(duì)將來(lái)的推測(cè)。

477] Though ______, many laws of nature exist.

[譯文] 盡管沒(méi)被發(fā)現(xiàn)，許多自然規(guī)律還是存在的。

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

　 C. not having discovered 　 D. having not discovered

[答案及簡(jiǎn)析] A。 當(dāng)從句的主語(yǔ)與主句的主語(yǔ)一致，可以用分詞短語(yǔ)化簡(jiǎn)。

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

[譯文] 仆人做了她該做的事來(lái)幫助革命。

　 A. what, help 　 B. that, to help

　 C. what, to help 　 D. all help

[答案及簡(jiǎn)析] C。 do what one can to do sth.是一個(gè)句型。

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

[譯文] 丟失的孩子最后看見(jiàn)他時(shí)，他在河邊玩耍。

　 A. playing 　 B. to be playing

　 C. play 　 D. to play

[答案及簡(jiǎn)析] A。 現(xiàn)在分詞作主與補(bǔ)足語(yǔ)，表示進(jìn)行。

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

[譯文] 他給我他的電話號(hào)碼以便我們需要他的幫助時(shí)好聯(lián)系他。

　 A. to 　 B. of me to

　 C. for me to 　 D. that I

[答案及簡(jiǎn)析] C。 不定時(shí)表示目的。