21. There is an old saying, ______________. It’s the experience of our forefathers, however, it is correct in
many cases ever today.
22. The English proverb says, ______________. This is quite true because ______________.
23. ______________ is now______________, and at the same time ______________. These two factors
have caused ______________. Then what shall we do to solve ______________ in the face of such a
situation.
24. One of our ancient philosophers said, ______________. Chinese people have always been holding this
idea to be one of their standards of morality.
25. One of the great early writers said that ______________. If this is true, the present situation should make
us ponder over ______________.
26. “Why do ______________?” Many people often ask questions like this.
27. In recent years, there is a general tendency to ______________. According to a study, there is
______________. compared with ______________ last year. Why ______________?
28. According to a survey, there is a growing number of ______________. What brings this result? The
main reason rests with.
29. Some people prefer to ______________. In their opinion, ______________. In addition,
______________. Nevertheless, nowadays, ______________ has become more and more common.
30. Today, there ______________, which have brought a lot of harms in our daily life. First,
______________ second, ______________. What makes things worse is that ______________.
（实习编辑：张宇红）