541] _______ are the days when the teachers were looked down upon .

[译文] 老师被瞧不起的日子一去不复返了。

　 A. Gone 　 B. Go

　 C. To go 　 D. Going

[答案及简析] A。 Gone are the days when…是一个句型。

540] Mr. Wang was such a good teacher _______ the students love and respect.

[译文] 王老师是一个受到学生热爱和尊敬的好老师。

　 A. who 　 B. whom

　 C. that 　 D. as

[答案及简析] D。 such…as..引导的定语从句。

539] Until the present century, ________ demand for natural gas.

[译文] 直到本世纪，对天然气的要求几乎没有。

　 A. little 　 B. and little

　 C. there was little 　 D. was there little

[答案及简析] C。 there be…句型本身就是倒装结构，不需要再倒装。

538] By the end of this year, we _____ 2000 English words.

[译文] 到本年尾，我们将记住2000个单词。

　 A. will learn 　 B. would learn

　 C. have learned 　 D. will have learned

[答案及简析] D。 在有by the end of 引导的短语中，句子的时态要用完成时态。

537] _______ knows the truth will tell you about it , I think .

[译文] 我想，知道真相的任何人都会告诉你的。

　 A. Who 　 B. No matter who

　 C. Whoever 　 D. B and C

[答案及简析] C。 此句有强调的意思，故选C。

536] The head engineer is in ________ the project .

[译文] 主任工程师负责这项工程。

　 A. his charge of 　 B. the charge of

　 C. charge of 　 D. one’s charge

[答案及简析] C。 in charge of　固定搭配，"负责"。

535] ______ began our new lesson.

[译文] 这样我们的新课就开始了。

　 A. But 　 B. Such

　 C. Thus 　 D. So that

[答案及简析] C。 副词Thus位于句首，要完全倒装。

534] I didn’t manage to do it _____ you had explained how.

[译文] 知道你解释了后我才能把此事做好。

　 A. until 　 B. unless

　 C. when 　 D. before

[答案及简析] A。 not …until..结构，"直到…才"。

533] According to the time table , the train for Beijing______ at seven o’clock in the evening .

[译文] 根据时刻表，去北京的火车晚上七点发车。

　 A. leaves 　 B. has left

　 C. was left 　 D. will leave

[答案及简析] A。 火车时刻是固定的用一般现在时态。

532] Henry escaped ____ by admitting his mistake.

[译文] Henry承认了错误，免受惩罚。

　 A. being punished 　 B. having been punished

　 C. having punished 　 D. punishing

[答案及简析] A。 escape一词后面一般跟动名词作宾语。