5. 解析：选B。考查名词辨析。句意为：不断上涨的房价使想要买房的人越来越少了。promotion 提升；decline 下降；depression 沮丧；increase 增加。

4. 解析：选C。句意为：根据他留给我的印象，我确定他是一个诚实勤奋的年轻人。make an impression on sb.给某人留下深刻的印象。

3. 解析：选D。句意为：有幸这个星期六好天气，晴朗，微风，无雨，因此我带着全家到海边玩。be blessed with 有幸；在……方面有福气，符合句意。be concerned with 和……有关；be composed of由……组成；be arranged for为……作准备。

2. 解析：选C。try out意为“实验”，符合句意“对这项法律草案进行实验”。

4. should/ought to; on 5. emerged/came out from behind the clouds

提升练习

B. 1. emerged 2. emerged/appeared 3. appears 4. appears

C. 1. in surprise 2. to come out 3. every now and then

4. care about 5. to play a part

8. approve 9. movement 10. temporary

10. -Don’t you think it’s going to rain over the weekend?

- 　　　　, for we will have a visit to the park on Sunday.

A. I don’t hope

B. I hope so

C. I’m afraid that

D. I hope not