根据所给汉语完成下列句子。

1. You'd better put on the sunglasses to ___________ (遮挡阳光).

2. Some leaves ___________ (落到水里) and remained there for some time.

3. Could you please tell me ___________ (这本书我可以借多长时间)?

4. In her spare time, Amy ___________ (用旧电视机做玩具) and sells them to raise

    money for the Children's Hospital.

5. Unless you speak French yourself, it's best to find ___________ (能为你翻译的人).

急性心包炎可出现（）

A.Austin-flint杂音

B.Craham-Steel杂音

C.Dster征

D.Kussmaul征

E.Ewart征