根据句意及首写字母写单词。

1. To my __________(惊奇的), he was late again.

2. He comes to school by bus because he is too __________(懒惰的) to walk.

3. Have you ever __________(去过) to Shanghai.

4. She's too __________(害羞的) to say a word before so many happy.

5. She must look after __________(她自己).

旋转阳极X线管与固定阳极X线管比较，其优点是（）

A.焦点大、功率小

B.焦点不变、功率大

C.焦点小、功率不变

D.焦点小、功率大

E.焦点不变、功率不变