Hundreds of years ago, life was much harder than it is today. People didn’t have modern machines. There was no modern medicine, either.
Life today has brought new problems. One of the biggest is pollution. Water pollution has made our rivers and lakes dirty. It killed our fish and polluted our drinking water. Noise pollution makes us talk louder and become angry more easily. Air pollution is the most serious kind of pollution. It’s bad for all living things in the world.
Cars, planes and factories all polluted air so thick that it is like a quilt over a city. This kind of quilt is called smog（煙霧）.
Many countries are making rules to fight pollution. Now factories must clean their water before it is thrown away, they mustn’t discharge（排放）dirty smoke into the air.
We need to do many other things. For example, we can put waste 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 fewer people driving, there will be less pollution.
Rules are not enough. Every person must help to fight pollution.
1．Hundreds of years ago, life was much harder than it is today because _______.
A．there were not any modern machines
B．there was no modern medicine
C． both A and B
D．they can not use modern machines
2．What is one of the biggest problems in today’s life?
A．Air pollution B．Noise. C．Pollution. D．Car
3．The most serious kind of pollution is ________.
A．noise pollution B．air pollution
C．water pollution D．car pollution
4．Factories must clean their water ________.
A．when it is thrown away B．before it is thrown away
C．after it is thrown away D．It isn’t mentioned.
5．From the passage we know that ________.
A．we can drink from the polluted rivers and lakes.
B．today people don’t have to talk to each other in a loud voice
C．people are making rules in order to fight pollution.
D．pollution is not important.
