8．
补全对话（有两项多余）。
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A. Do you know why?
B. Do you like the trees?
C. What bad weather!
D. What are you doing?
E. Do you like the countryside?
F. What do you think of it?
G. But how do trees influence the weather?
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A: Hi, Bill.
B: Oh, I'm thinking about the life in the
countryside.
A:
B: Yes, I like it very much. In the countryside, the
air is fresh, the sky is blue, and there are also green trees and clear rivers.
A: It's quieter too. People can enjoy the beauty of
nature there.
B: Please look at the picture.
A:
B: So it is. The wind is blowing strongly with lots
of sand. I couldn't see anything, and my face hurt while I was walking down the
street just now.
A: I'm sorry to hear that.
B: Yes, because people have cut down too many trees.
As a result, lots of rich land has changed into desert.
A: That's too bad.
B: Trees can stop the wind from blowing the earth
away.
