2 . Indeed, his slim but strong body is just like that of millions of Chinese farmers, to whom he has __________his life.

A．tackled

B．devoted

C．boosted

D．yielded

5 . B________ economic growth is one of the government’s goals at the moment.(根据首字母单词拼写)

7 . 阅读下面句子，根据句意，从方框中选择恰当的词或词组，并用其正确形式填空。

have an impact on                    boil down to                                 leave out significant                           boost             for instance             be known as

1. Anne Sullivan was a superb teacher who ________________ Hellen Keller.
2. Susan’s success in business ________________ her determination and bravery.
3. They’re building new hotels in order to ________________ tourism in this area.
4. John explained the case to his boss, being careful not to ________________ any important details.
5. The discovery of the new drug is of great ________________ to people suffering from heart disease.
6. We made many improvements to our house. ________________, we painted the walls and bought a sofa.
7. In the third mass extinction, which ________________ the “Great Dying” now, more than 90% of all species died out.

8 . However, what concerned him most was that farmers often had poor harvests and sometimes even had a serious ____________ of food to eat.

A．shortage

B．hybrid

C．crisis

D．boost

E．yield

9 . Indeed, his slim but strong body is just like that of millions of Chinese farmers, to whom he has ____________his life.

A．tackled

B．devoted

C．boosted

D．yielded

E．convinced