3 . 根据句子内容，从每组选项中选出能匹配句子中划线部分意义的选项。选项中有一项为多余选项。

A. extremely important, because it will affect other things B. to show that sb/sth is right or reasonable C. to introduce new things, ideas, or ways of doing sth D. the process of comparing two or more people or things E. many times at short intervals F. able to give completely correct information or to do sth in an exact way

1. How can teachers justify spending so much time on outdoors activities?
2. We must constantly adapt and innovate to ensure success in a growing market.
3. Comparison with other oil-producing countries is extremely interesting.
4. Police have stressed that this is the most accurate description of the killer to date.
5. This is a crucial year for your relationships in general and your love life in particular.

5 . You should be ________ enough to learn from your mistakes.

A．appropriate

B．steady

C．accurate

D．humble

7 . 北斗系统比GPS精确10倍，将在推进国际合作中起到积极的作用。(promote) (汉译英)