The population of the Earth is growing faster. It is important that we look after the Earth. We need it!
The Earth gives us a lot of things. We also give the Earth a lot, but some of the things are not good.

In nature, when something dies, other animals and plants get food from it. Every animal or plant gives food for other animals or plants. However, animals can’t get food from many of the things that we ‘give’ the Earth. Animals and plants can’t eat metal, plastic and glass. These things will stay in the ground for many, many years.
Some rubbish is very dangerous for plants and animals. In some places, many animals live together. One animal makes food for many more animals. If we put rubbish and chemicals in the water, the plankton(浮游生物) can die. If there isn’t any plankton, many animals have nothing to eat.
So what can we do? Don’t leave any rubbish in the countryside! Don’t make so much rubbish!
【小题1】The Earth gives us ___________.

The bicycle is one of the simplest yet most useful inventions in the world. What is most surprising is that it was not ___1__ earlier, although the great inventor Leonardo Da Vinci had drawn pictures for bicycles and also for flying machines and some other things. Those things were not produced___2___ long after he died.
　　A person riding a bicycle uses ___3___ energy to make the bicycle move, and there is no pollution at all when you are riding. Even so, in developed ____4___, most people don’t travel to work by bicycle. It is not because the bicycles are expensive or people feel___5____ if they ride to work. It’s because __6___ cars on the roads becomes larger. It certainly becomes ___7___ to ride a bicycle. As a result, more people put their bicycles away and go to work ___8___ their cars , and in this way, the situation is made more serious.___9___ the best way to make riding safer and more popular is to create paths (开设通道) only for bicycles, and to make ___10___ so difficult and expensive for drivers to take their cars into the city that they will go back to use their bicycles.

The world itself is becoming much smaller by using modern traffic and TV, telephone and so on. Life today is much easier than it was hundreds of years ago, but it has also brought new problems. One of the biggest is pollution. Pollution comes in many ways. We see it, smell it, drink it and even hear it.

The more people, the more pollution. Many years ago, the problem was not so serious because there were not so many people. Man is now slowly polluting the whole world..

Air pollution is still the most serious. It’s bad to all living things in the world. Water pollution kills our fish and pollutes our drinking water. Noise pollution makes us become angry more easily.

Many countries are making rules to fight pollution. They stop people from burning coal in houses and factories in the city.

The pollution of SO2 is now the most dangerous problem of air pollution. It is caused by heavy traffic. It is sure that if there are fewer people driving, there will be less air pollution.

1.Our world is becoming much smaller _______.

A．because the earth is being polluted day and night

B．thanks to science development

C．because of the rise in population

D．because the earth is blown away by the wind every year

2.Thousands of years ago, life was _______it is today.

A．much easier than   B．as easy as          C．as hard as         D．much harder than

3.Pollution comes in many ways. We can even hear it. Here “it” means______.

A．Water pollution     B．air pollution        C．noise pollution     D．rubbish

4.Air pollution is the most serious kind of pollution because ________.

A．it’s bad to all living things in the world      B．it makes much noise

C．it has made our rivers and lakes dirty         D．it makes us become angry more easily

5.Which of the following is NOT TRUE?

A．Many countries are making rules to fight pollution.

B．The pollution of the earth grows as fast as the world’s population does.

C．From now on, maybe people should try to go to work by bus or bike instead of car ormotorbike. It is helpful to fight against the problem of SO2.

D．The problem of pollution is not so serious because there are so many people

Scientists are trying to make some small cars that may some day take the place of today’s big cars. If everyone drives such cars in the future, there will be 1_ pollution in the air. There will _2 be more space or parking cars in cities, and the _3_ will be less crowded. Three such cars can fit in__4__ that it is now needed for one car of the usual size.

The little cars will __5___ much less to own and to drive. Driving will be __6___, too, as these little cars can go only 65 kilometers per hour. The little cars of __7___ will be fine or getting out of the city, but they will not be useful for__8__ trips. Little cars which are powered by gasoline( 汽油 ) will go 450 kilometers __9___ needing to stop for more gasoline .

If big cars still are used together with the small ones, _10__ sets of roads will be needed in the future. Some roads will be used for the big, fast cars, and some roads will be needed for the slower, small ones.

1.                A．much          B．less            C．small D．more

2.                A．have           B．also            C．too  D．less

3.                A．spaces         B．streets         C．shops    D．building

4.                A．spaces         B．the rooms       C．the group D．the space

5.                A．spend          B．take           C．cost D．pay

6.                A．faster          B．safer           C．quick D．dangerous

7.                A．today          B．todays          C．the past  D．the future

8.                A．short          B．long           C．any  D．the shortest

9.                A．after           B．then           C．before   D．while

10.               A．few           B．two            C．many D．little