Hundreds of years ago,life was much harder than it is today.People didn’t have modern machines.There

题目

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.The biggest one 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.It’s bad to all living things in the world.
Cars,planes and factories all pollute our air every day.Sometimes the pollute air is so thick that it is like a quilt 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,they mustn’t blow dirty smoke into the air.We need to do many other things.We can put waste things in the dustbin and not throw them 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 les

答案

1.b 2.a 3.b 4.d 5.d从文中找一模一样的句子就可以找到答案,同时最后一题是对全文了解的程度,