2 . 根据语境，选择下框中的单词或者短语的正确形式填空，框中有两个多余单词或短语。

commit     circumstance     efficiency     acknowledge     conclusion      the instant     come to power     sum up     take up     insist on

1. The Internet is a very _____________ medium for spreading information.
2. The man________________finding a taxi for me even though I told him I lived nearby.
3. He was a good man who was_______________to his family as well as to his work.
4. Lu Xun,________________ as one of the greatest modern writers in China, was born in Shaoxing, Zhejiang Province in 1881.
5. To _______________, low price, easy access to information and wide use make students use computers a lot.
6. Peter_____________________his position as the head of the travel agency last month.
7. Much to my surprise, she burst into tears ________________she read the letter.
8. Under no ____________________ will China be the first to use nuclear weapons.

3 . 令我印象最深刻的是这位饱经风霜的生物学家始终直面每一个挑战。(take) (汉译英)

9 . She’s one of those famous film stars who ___________ everywhere on TV in magazines on Broadway.

A．bring up

B．pick up

C．pop up

D．take up