3. Since China has been a member of WTO, English is _______ useful than before.

A. more            B. most

C. much            D. very

2. The population of China is _______ than _______ of any other country in the world.

A. larger, the one                      B. more, that

C. larger, that   D. more, the one

1. Which is _______, English or Chinese?

A. interesting     B. interestinger    

C. more interesting                    D. most interesting

10. 无比较对象，即用形容词的原级，答案为careful。

9. 如表示两者中较大的那个，应在比较级前加the，答案为the elder。

8. much 后接比较级，且句子中有连词than(比)，故正确答案为lighter。

7. “比较级 + and + 比较级”意为“越来越……”即答案为worse, worse。

6. “the + 比较级，the + 比较级”意为“越……越……”，故答案为better。

5. 英语和数学相比，且句中使用了连词than，所以该空应填比较级more interesting。

4. 两者相比，应考虑形容词的比较级。故答案为taller(from www.zkenglish.com)。