Directions.

There has been a discussion recently on the issue of digging wells. Write an essay to the newspaper to

1. show your understanding of the symbolic meaning of the picture below

1) the content of the picture

2) the meaning/your understanding

2. give a specific example/comment, and

3. present your suggestions

You should neatly write 160--200 words on ANSWER SHEET 2.

以下属于禽流感传播途径的是（）。

A、经呼吸道飞沫与空气传播

B、经过消化道感染

C、经过损伤的皮肤感染

D、经过眼结膜感染

E、经过胎盘传播