500] At no point south of the Han River _______ more than a mile.

[译文] 敌军在汉河南岸前进了一英里多。

　 A. the enemy didn’t advance 　 B. the enemy advanced

　 C. did the enemy advance　　 D. didn’t

[答案及简析] C 表示地点的状语在句首，主句要部分倒装。

499] Only at that time ______ that he had made a lot of mistakes in his homework.

[译文] 知道那个时候他才意识到他的家庭作业中出了很多错误。

　 A. He realized 　 B. did he realize

　 C. he did realized 　 D. realized he

[答案及简析] B。 only引导的状语在句首，主句要部分倒装。

498] He ______ prison two years ago and now he _______.

[译文] 两年前他悲观进监狱，现在被释放了。

　 A. was put in; was set free 　 B. was shut into, is set free

　 C. put into, has been set freely 　 D. was put into; has been set free

[答案及简析] D。 put sb. into prison　；set sb. free都是固定搭配。

497] _______ the two oceans the Pacific is ______ .

[译文] 在这两个大海中，太平洋是最大的一个。

　 A. In; the large 　 B. For; larger

　 C. Of; larger 　 D. Of, the larger

[答案及简析] D。 在两个当中的比较级，要用介词of。

496] If city noises _______ from increasing, people _______ shout to be heard even at the dinner table 20 years from now.

[译文] 如果城市噪音不制止，二十年后人们不得不在餐桌上吃饭就得大声喊叫才能听得见。

　 A. are not kept; will have to 　 B. are not kept; have to

　 C. do not kept; will have to 　 D. do not kept; have to

[答案及简析] A。 考查keep…from doing sth.结构的被动形式。

495] I _____ ten minutes to decide whether I should reject the offer.

[译文] 给我使分钟的时间考虑是否拒绝这个帮助。

　 A. gave 　 B. was given

　 C. was giving 　 D. had given

[答案及简析] B。 考查动词give的用法。give sb. sth ,该句中还差个宾语，故用被动形式。

494] The people are ______ young workers between the age of twenty and thirty.

[译文] 这些大部分都是20到30岁的年轻工人。

　 A. nearly 　 B. almost

　 C. mostly 　 D. most

[答案及简析] C。 mostly副词，大部分。

493] ______ the day on, the weather got worse.

[译文] 随着时间的推移，气候变得越来越糟。

　 A. With 　 B. Since

　 C. Which 　 D. As

[答案及简析] A。 with +名词 + 副词构成的复合结构，表示伴随。

492] I’m pleased ______ should be done has already been done.

[译文] 我很高兴，该做的都已经做好了。

　 A. with what 　 B. that that

　 C. by that 　 D. that what

[答案及简析] D。 be pleased that…句型中又有一个带主语从句的复合句。

491] Do you know our town at all? No, this is the first time I ______ here.

[译文] 你了解我们城市么？不，我这是第一次到这儿来。

　 A. was 　 B. have been

　 C. came 　 D. are coming

[答案及简析] B。 this is the first time that…在这个句型中，从句要用完成时态。