11. There is no denying the fact that air pollution is an extremely serious problem: the city authorities should take strong measures to deal with it.
11. 無可否認，空氣污染是一個極其嚴重的問題：城市當局應該采取有力措施來解決它。

12. An investigation shows that female workers tend to have a favorable attitude toward retirement.
12. 一項調查顯示婦女歡迎退休。

13. A proper part-time job does not occupy students too much time. In fact, it is unhealthy for them to spend all of time on their study. As an old saying goes: All work and no play makes Jack a dull boy.
13. 一份適當的業余工作并不會占用學生太多的時間，事實上，把全部的時間都用到學習上并不健康，正如那句老話：只工作，不玩耍，聰明的孩子會變傻。

14. Any government, which is blind to this point, may pay a heavy price.
14. 任何政府忽視這一點都將付出巨大的代價。

15. Nowadays, many students always go into raptures at the mere mention of the coming life of high school or college they will begin. Unfortunately, for most young people, it is not pleasant experience on their first day on campus.
15. 當前，一提到即將開始的學校生活，許多學生都會興高采烈。然而，對多數年輕人來說，校園剛開始的日子并不是什么愉快的經歷。

16. In view of the seriousness of this problem, effective measures should be taken before things get worse.
16. 考慮到問題的嚴重性，在事態進一步惡化之前，必須采取有效的措施。

17. The majority of students believe that part-time job will provide them with more opportunities to develop their interpersonal skills, which may put them in a favorable position in the future job markets.
17. 大部分學生相信業余工作會使他們有更多機會發展人際交往能力，而這對他們未來找工作是非常有好處的。

18. It is indisputable that there are millions of people who still have a miserable life and have to face the dangers of starvation and exposure.
18. 無可爭辯，現在有成千上萬的人仍過著挨餓受凍的痛苦生活。

19. Although this view is wildly held, there is little evidence that education can be obtained at any age and at any place.
19. 盡管這一觀點被廣泛接受，很少有證據表明教育能夠在任何地點、任何年齡進行。

20. No one can deny the fact that a person's education is the most important aspect of his life.
20. 沒有人能否認：教育是人生最重要的一方面。