根据句意填写适当的单词。

1.  The old woman feels______after a long walk.

2.  Eating a______ diet is good for health.

3.  I have a______,so I can't speak a word.

4. I brush my______twice a day.

5.  The little boy eats too much, he has a______.

下列生物的发育没有经过蛹期的是

A．蝴蝶

B．蝗虫

C．家蚕

D．蚊子