问题补充：
补全对话。（共4小题，每小题1分；计4分）
Li Yang: Good morning. Mathew.
Mathew: Good morning, Li Yang. 【小题1】
Li Yang: Theres still smog (雾霾) today. Well have to go to school with face masks(口罩).
Mathew: 【小题2】According to the news, PM2.5 pollution is the main problem with air pollution.
Li Yang: Yes, and air pollution has done harm to peoples health.
Mathew: So the Chinese government and Chinese people must take action to fight it.
Li Yang: 【小题3】
Mathew: Yeah. 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.
Li Yang: I agree.【小题4】And we suggest making the blue skies return for good.
Mathew: I hope so, too.A
答案：
(答案→)A
解析：
【小题1】根据下面应答语Theres still smog (雾霾) today可知此处是在询问今天的天气情况，所以选 A。
【小题2】根据上句Theres still smog (雾霾) today. Well have to go to school with face masks(口罩).和下句According to the news, PM2.5 pollution is the main problem with air pollution 可知选C，真遗憾！
【小题3】根据答语Yeah.可知此处该是个一般问句，所以选B。
【小题4】根据下句And we suggest making the blue skies return for good.可推知该句是说我们希望越来越多的人加入我们的行列，所以选D。
补全对话。（共4小题 每小题1分；计4分）Li Yang: Good morning. Mathew.Mathew: Good morning Li Yang. 【小题1】Li
