精选优质文档-倾情为你奉上A:Good morning! B! How are you?B:not good! Ugh! This air smells polluted.A:Yes, I have the same feeling too. I think it is because of the factory nearby. It is polluting the surrounding air. B: the environment problem is not so serious in our childhood. A: Yes, once our environment is very beautiful. The air was fresh, the water was clean, the sky was blue. But today, everything is different.B: Factories in the towns and cities drained waste liquid to the lakes, ri
