4 . The Web is a minefield (雷区) where you can literally be bullied to death via social media, and a loose text can ______ your reputation.

A．appoint

B．limit

C．ruin

D．fade

5 . In December 1904 she was a________ chief assistant in the laboratory directed by Pierre Curie. (根据首字母单词拼写)

7 . The United States, unlike other countries, doesn’t have “national holidays” that must be ________by all people.

A．appointed

B．reserved

C．illustrated

D．observed

8 . A month ago, William, as well as two of his colleagues, _______ to Hong Kong to take charge of the branch office there.

A．have been appointed

B．has been appointed

C．was appointed

D．were appointed

10 . 词性转换
1. ________ vt.(举例)说明；阐明；给(书或文章)加插图→________ n.图解；图示
2. ________ vt.娶；嫁；和……结婚→________ n.结婚；婚姻
3. ________ vi.&vt.抱怨；发牢骚→________ n.抱怨；不满；投诉
4. ________ vt.回答；回复vi.做出反应；回应→________ n.反应；回答；回复
5. ________ vt.拒绝接受；不录用→________ n.
6. ________ vt.任命；委派→________ n.任命；职务；约会；预约
7. ________ vt.选举；推选→________ n.选举；推选；当选
8. ________ vi.& vt.退休；退职；退出→________ n.退休；退职；退休年龄
9. ________ adj.(增长、下跌等)急剧的；锋利的；明显的→________ adv.急剧地；突然大幅度地；明显地；严厉地
10. ________ vt.惊吓；使害怕vi.受惊吓→________ adj.害怕的；对……感到惊慌或恐惧的
11. ________ vt.照顾；照料vi.倾向；趋向→________ n.倾向；趋向；趋势
12. ________ adj.精力充沛的；充满活力的；需要能量的→________ n.精力；能量