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。
490] More than one hundred got saved from the fire _____ helicopter.
[译文] 直升飞机从大火中救出了一百多人。
A. in B. with
C. by D. from
[答案及简析] C。 表示方式用介词by。
489] ______ students in class 4 took park in that spring outing.
[译文] 4班的全部48个学生参加了春游。
A. 48 all B. 48 whole
C. All 48 D. The whole 48
[答案及简析] C。 一般说来，whole 不能和具体的数目连用。
488] You didn’t let me drive. If we _____ in turn, you ______ so tired.
[译文] 你不让我驾车。如果你让我们轮流开车的话，你也不会那么疲劳。
A. has left; comes B. drove; wouldn’t have got
C. were driving; wouldn’t get D. had driven; wouldn’t have got
[答案及简析] D。 与过去事实相反的虚拟语气。
487] So loudly ______ that every one of the class could hear him.
[译文] 他说话那样大声，班上每个人都听得见。
A. did he speak B. did he spoke
C. spoke he D. he spoke
[答案及简析] A。 so…that…引导的从句在句首，主句要部分倒装。