30. What does the last paragraph want to tell us?

A. One must follow a correct path to avoid mistakes.

B. To become an Einstein, you should make mistakes.

C. Making mistakes is not a disadvantage in a way.

D. You can't make mistakes unless you try new things.

31. What's the main idea of the passage?

A. We can never avoid making mistakes when we work.

B. Success can't be achieved without making mistakes.

C. Try every means to avoid mistakes in our daily life.

D. Mistakes should be treated with a correct attitude. 高考英语模拟试题库  http://www.17xuexiba.com/yy/