2 . His great discovery ______his determination and devotion to science.

A．caused

B．led to

C．lay in

D．resulted in

3 . 选词填空，并根据句子的意思使用正确的形式

make one’s fortune；depend on；go all out；focus on；be related to；a series of； communicate with；feed on；lead to；in harmony with；wash away

1. To live a happy life, we should be   ___________ nature.
2. The government has taken   ____________ measures to improve the air quality.
3. Money is neither good or bad, but all __________what use is made of it.
4. We are sure to win the match so long as we __________ .
5. With these trees, the soil couldn't ________ easily.
6. This course is designed for beginners,   ________listening and speaking practice.
7. This is the first time that we have _____________ each other on the internet.
8. He ________ by selling famous cars last year.
9. Some birds and other animals ___________ insects
10. It is known that hard work   _____________ success.

4 . I will give you some articles which you can _______ when you write the report.

A．refer to

B．answer to

C．lead to

D．talk to

5 . The good result ___________the correct methods, that is to say, correct methods ___________good result.

A．lies；lead

B．leads to；lie in

C．lies in；lead to

D．lies to；lead to