谁能告诉我这些题目的答案啊

都是俚语问题

1 never again believe anything in trousers?
(no)trousers 毫无理由的说大话.吹牛

2 put a bug in the boss’ear for you.
put a bug in one's ear 事先给人警告/提醒

3increased four times as against 1958.
增加了4倍和是。。。的四倍的区别应该是数学问题吧：）

4cannot be over-emphasized.
其实是影响大得很，要很重视得意思。不知道该再怎么突出了。译文完全相反咧

5 percent of what?

6consider it as nothing less than a question of freedom or slavery.
就是个。。。的问题，无非就是。。。的问题
无非就是一个赢得自由或者沦为奴隶的问题

7on the existing cultivated land has potential.
一个句子两个谓语咯

8 pursuit啥词性啊

7．原文：提高现有耕地单位面积产量有潜力。
译文：Increasing the yield per unit area on the existing cultivated land has potential.

The yield per unit area on the existing cultivated land has potential to be increased.

被动语态