3 . The country environment was having a _______ effect on children’s health.

A．full

B．positive

C．little

D．major

5 . 请用方框中的单词完成句子。

strategy   demand   major   rescue obviously

1. Sugar is a ______ cause of toothache.
2. The boy was in tears and ______ very upset.
3. These sports ______ both speed and strength.
4. The lady was trying to ______ her son from the fire.
5. We must develop a ______ to deal with the problem.

6 . 无论你将来选择怎样的专业，我希望你不要被迫做出一个你会后悔的决定。(push) (汉译英)

7 . In fiction, m______(主要的) characters are central to the plot and are generally complex. (根据中英文提示填空)

9 . 我妹妹在北京外国语大学主修英语专业。(major, 定语从句)
My sister, ________ , is studying in Beijing Foreign Studies University.

10 . After he won a ________ for his exceptional achievements in city administration, he was appointed as ________, gaining widespread agreement from the community.

A．medal; major

B．metal; mayor

C．medal; mayor

D．metal; major