Hundreds of years ago, life was 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 kills our fish and pollutes our drinking water. Noise pollution makes us talk louder and become angry more easily. Air pollution is the most serious kind of pollution to all living things in the world.
　　Cars, planes and factories all pollute our air every day. Sometimes the polluted air is so thick that it is like a quilt (被状物) over a city. This kind of quilt is called smog.
　　Many countries are making rules to fight pollution. Factories must now clean their water before it is thrown away, and they mustn’t let dirty smoke go into the air.
　　We need to do many other things. We can put waste things in the dustbin and do not throw them on the ground. We can go to work by bus 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 modern machines B. there was no modern medicine
　　C. both A and B D. there were not many people

　　2.______ is the biggest pollution in today’s life.
　　A. Water pollution B. Air pollution C. Noise pollution D. Pollution

　　3.The most serious kind of pollution is ________.
　　A. noise pollution B. air pollution C. water pollution D. A, B and C

　　4.Factories must clean their water ________.
　　A. before they are thrown away B. when they are thrown away
　　C. after it is thrown away D. before it is thrown away

　　5.From the passage, we know that _______.
　　A.a few years ago, there was no smog at all
　　B.today people don’t have to talk to each other loudly
　　C.we can drink water from the polluted rivers and lakes
　　D.people are making rules in order to (为了)fight pollution

　　【答案与解析】
　　当今，人们的生活水平提高了，但现代生活带来的污染问题却困扰着人们：水污染影响鱼类和人类的饮水质量；噪音污染让人易怒；空气污染是最为严重的。许多国家和政府制定了防止污染的法律和法规，但这还远远不够。更为重要的是，人人都应当参与到这场抗击污染的战役中来。
　　1.C 人们在一百多年前既没有现代化的药品，也没有现代化的机器。所以答案是C。
　　2.D 本题属表层理解题。"One of the biggest is pollution."即是答案的出处。
　　3.B 本题同样是表层理解题。第二段的最后一句就是答案之所在。
　　4.D 答案在"Factories must now clean their water before it is thrown away…"中。
　　5.D 综合考虑全文及"Rules are not enough. Every person must help to fight pollution."的意思，可知答案非D莫属。

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