2 . The climate is a complex system: ________ warming adds its uncertainty.

A．cultural

B．traditional

C．efficient

D．global

3 . Mary is quite patient and helpful, making her one of the most ______ teachers among the students.

A．active

B．popular

C．determined

D．efficient

5 . 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.

10 . 词性转换
1. misunderstand v.误解，误会________ n.误解，误会
2. explode v.爆发；爆炸________ n.爆炸；爆发
3. generous adj.慷慨的；仁慈的________ adv. ________ n.慷慨；大方；宽宏大量
4. curious adj.好奇的 ________ adv. ________ n.好奇；好奇心
5. slave n.奴隶 ________ n.奴隶制
6. efficient adj.效率高的________ adv.效率高地 ________ n.效率；功效
7. benefit n.益处；v.使收益_________ adj.有益的
8. comfort n.舒服；安慰；v.安慰，抚慰________ adj.舒服的 ________ adv.舒服地 ________ adj.不舒服的 ________ n.不舒服，不舒适
9. joy n.高兴；愉快________ adj.快乐地，高兴的
10. recognize v.承认；认出，辨别出________ n. 承认；认出；赏识
11. death n.死，死亡_________ adj.死的 _________adj.致命的
12. company n.公司；陪伴 ________ v.陪伴，陪同
13. poet n.诗人； ________ n.诗歌；poetry n.诗歌(总称)
14. admire v.钦佩；欣赏 ________ adj.令人钦佩的；值得赞赏的________ n.钦佩；赞赏