根据汉意或首字母提示完成句子。

1. The prisoners a______ to escape, but failed.

2. I have an important ______ (约会) at 3 p.m.

3. I'm very a______ about my son's health.

4. There would be too many people in the ______ (交响乐) hall.

5. Getting this contract is c______ to the future of our company.

当人受到挫折后，通过想象自己达到了目的或获得了成就的方式属于心理防御机制的哪一种表现？（）

A.补偿

B.分离

C.幻想

D.升华