3 . 根据句子内容，从选项中选出能匹配句子中划线部分意义的选项。选项中有两项为多余选项。

A. to recognize the difference between two people or things B. suitable, acceptable or correct for the particular circumstance C. a lack of food that can cause illness or death, especially among large numbers of people D. to prefer one system, plan, way of doing sth, etc. to another E. not willing to let anything prevent you from doing what you have decided to do F. a little G. extremely large

1. Now that the problem has been identified, an appropriate action can be taken.
2. Elsewhere, people favour shaking hands when they meet someone else.
3. It was hard to distinguish one twin from the other.
4. We took a slightly more direct route.
5. The problems facing the President are enormous.