We all know that Beijing is one of _______ cities in the world. A. big B. bigger C. biggest D. the biggest 答案:D阅读下面对话,从方框中选择五个最适当的句子完成对话(其中有2个选项是多余的)。
Li Yang: Good morning, Mathew.
Mathew: Good morning, Li Yang. 1.
Li Yang: There's still smog(雾霾)today. We'll have to go to school with face masks(口罩).
Mathew:2. According
to the news, PM2.5 pollution is the main problem with air pollution.
LiYang: Yes, and air pollution has done harm to
people's health.
Mathew: So the Chinese government and Chinese
people must take action to fight it.
Ji Yang:3.
Mathew: Since PM2.5 is mainly caused by vehicles(机动车)and factories, cars with large emissions(排放)should not be allowed and factories should be closely
watched.
LiYang:4. We
hope that more and more people will join us in making the blue skies return for
good.
Mathew:5.
A. I hope so, too.
B. Can you give any advice?
C. I don't think so.
D. What a pityl
E. I agree.
F. What's the weather like today?
G. That's OK.