小测验：选择正确的单词

1. air pollution
   n.空气污染
   
2. noise pollution
   n.噪音污染
   
3. sound pollution
   n.(=noise pollution)噪音污染
   
4. thermal pollution
   热污染
   
5. water pollution
   水污染
   
6. biodegradable pollution
   生物降解性污染法
   
7. industrial air pollution
   工业空气污染
   

1. People are becoming increasingly worried about pollution.
   人们对污染越来越感到忧虑。
2. Air pollution has been partly attributed to cars.
   人们认为空气污染部分是由汽车造成的。
3. There has been serious pollution since industrialization.
   自从工业化以来就有了严重的污染。
4. The pollution-discharge fee system.
   排污收费制度。
5. I'm afraid the pollution will kill us all.
   公害可能把我们都逼死

　3个名词解释