M4EO伴有染色体异常是 （） A.t（9；22） B.t（15；17） C.in

阅读理解。

     The world is becoming smaller by using modern traffic, TV, telephone and so on. Life today is 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. The pollution of

SO2 is now the most dangerous problem of air pollution. It is caused by heavy traffic. It is true that if there

are fewer people driving, there will be less air pollution.

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

factories in the city. So the less pollution there is, the better life people will have.

1. Our world is becoming much smaller _______.

A. because of science development

B. because there are fewer people

C. because there are more people

D. Because the earth is being polluted day and night

2. Hundreds of years ago, life was _______ it is today.

A. easier than

B. as easy as

C. harder than

D. as hard as

3. Pollution comes in many ways. We can even hear it. Here "it" means _______.

A. air pollution

B. noise pollution

C. water pollution

D. soil pollution

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

A. it makes much noise

B. it's bad to all living things in the world

C. it has made our rivers and lakes dirty

D. it causes unhealthy food

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. There will be less air pollution if fewer people drive cars.

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

连词成句。

many, in, people, how, family, wear, glasses, your (?)

________________________________________________________________

能正确表示动物与其气体交换部位的是（　　）

①蚯蚓--体表    ②鲫鱼--鳃    ③家鸽--肺和气囊    ④青蛙--鳃和皮肤     ⑤家兔--肺．

A．①②④

B．①②⑤

C．①③⑤

D．②③⑤

阀水冷系统退出运行的操作是什么？

小微企业贷款对象包括（）。

A、小型企业

B、微型企业

C、小微企业主

D、个体工商户