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Nowadays there's a general discussion on zoos among people. These two students write their different ideas on a newspaper.

Zoos Do a Good Job------ Maria Smith

I know a large number of people think it is not wise to keep animals in zoos. ___1__ , I believe that it is good to keep animals in zoos.

Firstly, zoos are places for people to see many different kinds or animals from all over the world. ___2____zoos, most people would never see a real bear or tiger.

Secondly, zoos ___3___the animals very well. The animals are given food and cleaned regularly. In the wild (野外) , it is not always easy for an animal to find food, so sometimes it goes___4____. But animals kept in zoos never suffer from hunger.

Thirdly, zoos protect the animals they take care of. They ___5___them safe places to live in. In the wild, some kinds of animals are in danger of' becoming extinct (滅絕) . But zoos give these animals a chance to live. There would be fewer kinds of animals in the world if there were no zoos.

Zoos Are Unnatural ------Philip Black

In my opinion, zoos are not good for animals; they are only good for people.

It is not natural and    6   to keep wild animals in cages. Most animals are kept in cages that are too small for them. In the wild, these animals would travel __7__. In zoos, they can't do this. This is why the bears and tigers always look so sad.

Most cages are not very clean, either. It is true that zoos give the animals food regularly, but this is not natural. Wild animals _  8    looking for their own food. We should treat animals in the same way that we treat other people----with respect.

Would anyone be happy if you don't let him go outside his home? Would Maria like to have lots of people standing outside her flat looking at her?  No, she wouldn’t. And animals don't like it, either.

London used to be “foggy” for the same reason that cities like Beijing or Chongqing are “foggy” today．The “fog” was in fact smog, a mixture of smoke and fog．In other words, it was made by air pollution．In London, some of this pollution came from factories, but much of it came from the coal(煤)that people burnt in their houses to keep warm during the winter．By the 1950s, London’s smog problem had become so bad that the government decided to do something to clean the air．A new law was made and nobody could burn coal in any British city．Within a few years, the air became much cleaner．There were no more “pea-soupers”．

Many Chinese cities now face the same sort of problem with air pollution that London faced 40 or 50 years ago．However, this problem is more difficult for Chinese cities to solve．One reason is that more of the pollution comes from the factories, rather than from coal burnt in people’s houses．If these factories were closed, this would harm the economy and lots of people would lose their jobs．Another reason is that changing from coal to cleaner fuel(燃料), like gas, is quite expensive．

However, the air in many Chinese cities is becoming cleaner and cleaner, as the government and people pay more and more attention to cutting down pollution．As a result, there are fewer “pea-soupers”in Beijing than there used to be．

1.What was the main reason for air pollution in London?

A．There was too much smoke in the sky．

B．There were too many factories in the city．

C．People burnt too much coal in the houses．

D．The city was too big for the cleaners to clean．

2.How did the air in London become much cleaner?

A．There was not so much fog in the winter later．

B．A law was made to keep people from burning coal in their houses．

C．Many factories in the city were closed．

D．People paid more attention to cleaning their city．

3.What does the underlined work “pea-soupers”refer to?

A．Smog????? ????????????? ????????????? B．Smoke????? ????????????? ????????????? C．Gas?????? ????????????? ????????????? D．Coal

4.The problem of air pollution is more difficult for Chinese cities to solve because of ___ reasons．

A．one????????? ????????????? B．two??????? ????????????? ????????????? C．three?????? ????????????? ????????????? D．four

5.Which sentence is Not true?

A．Air pollution is serious in Beijing and Chongqing．

B．Using coal is much more expensive than using gas．

C．Factories made much more pollution in China．

D．The reasons of air pollution in London and Beijing are different．