Read the passage and fill in the blanks with proper words(在短文的空格内填入适当的词，使其内容通顺，每空格限填一词，首字母已给)

　　Hundreds of years ago, life was much harder than it is today. People didn't have modern machines. There was no medicine, either.

　　Life today has brought new (1)p　　. One of the biggest is pollution. Water pollution has made our rivers and lakes dirty. It kills our fish and affects(影响) our (2)d　　 water. Noise pollution makes us talk louder and became angry more (3)e　　. Air pollution is the most serious kind of pollution. It affects every living thing in the world.

　　Cars, planes and factories all pollute our air every day. Sometimes the pollution is so thick that it is like a quilt over the city. This kind of quilt is called smog. Many countries are making new (4)l　　 to fight pollution. Factories must now clean their water before it is thrown away, they mustn't blow dirty smoke into the air.

　　We need to do many other things. We can put (5)w　　 things in the dustbin and not throw it on the ground. We can go to work by bus or with our friends in the same car. If there are (6)f　　 people driving, there will be less pollution.

　　Laws are not enough. Every person must do something to fight against pollution.

根据所给音标写出正确的单词。

1. /’pכridз/        2. /θru:/               

3. /’ter∂b∂l/               4. /’hevi/                

5. /dзi’כgr∂fi/