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.
根据短文内容，选择最佳答案，并在答题卡上按要求作答。
【小题1】What was the main reason for air pollution in London?

Your junior high school years are coming to an end．After the big exam，most of you will go on to study in a senior（高级）high school．What are you expecting from senior high? Let's hear some Teens readers talk about it．

Zhou Zhijie，15，from Shanghai：

I have heard that although Senior 3 is a hard year，Senior I and Senior 2 are less stressful．I hope there'll be time then to enjoy sports．There will be plenty to see：the Tennis Masters Cup will be held in Shanghai，and of course there is the 2008 Beijing Olympics．I am going to do something for it and I'm sure Hl really enjoy it．

Jin Xin，16，from Harbin，Heilongjiang：

I really enjoy science．I visit many science exhibitions．I am interested in UFOs too．I'm crazy about making model planes，although I'm not very good at it because I don’t really have enough scientific knowledge．I'll be learning more science in senior high．In a word，sometime in the future I'm going to build an excellent model plane!

Wang Yaling，15，from Xiamen，Fujian：

I hope I can be taller in senior high schoo1．I am only 155 cm．Many people grow faster in senior high and I hope I will too．I want to be 162 cm．But I'm not so sure about that，since most girls in my family don't grow any taller than 160cm．I hope I'm different．

Zhang Fang，15，from Puyang，Henan：

I expect that I'll make more friends in senior high．I study in a middle school in the country．Most of my classmates live nearby．In senior high，Hl meet different people from different areas．I hope I can learn new things from them．

1．It seems that              has a special interest in sports．

A．Zhou Zhijie           B．Jin Xin                    C．Wang Yaling           D．Zhang Fang

2．Jin Xin believes that it needs             to make an excellent model plane．

A．a quite long time                                      B．a lot of scientific knowledge

C．knowledge of UFOs                                   D．help from senior high teachers

3．Wang Yaling and Zhang Fang                 ．

A．are from one city                                     B．have a similar dream

C．are the same age                                        D．have a similar problem

4．The underlined word “stressful” in the first talk probably means “making one feel          ”．

A．busy and nervous                                    B．free and easy

C．unsuccessful and sad                                 D．safe and happy

5．Tile students in the passage are talking about                 ．

A．their hobbies        B．their experiences      C．their schools           D．their wishes

Large population has caused many problems. For example, the traffic is very heavy in some big cities.

During the last ten years, big cities like Beijing and Harbin were full of cars and buses. Now the streets are completely crowded and it’s very difficult to drive a car along them. Drivers must stop at hundreds of traffic lights. What are our cities going to be like in the future? How can we solve the problem?

There are some good ideas to reduce the use of private(私人的) cars. In 1971, the officer in Rome began an interesting experiment: Passengers on the city buses didn’t pay for their tickets.

In Stockholm there was another experiment: People paid very little for a season ticket to travel on any bus, trolley bus(电车) and train all over the city.

In many cities now some streets are closed to vehicles(机动车) and pedestrians are safe there.

In London there is another experiment: Part of the streets is for buses only. So the buses can travel fast. There are no cars or taxis in front of them.

根据短文内容, 选择最佳答案。

1.The passage is about         .

A．big cities          B．streets            C．cars              D．traffic

2.The city of          once experimented on a completely free bus service.

A．London           B．Paris             C．Rome            D．Stockholm

3.The city of          experimented on a very cheap bus service.

A．Paris             B．Stockholm         C．London           D．None of the above

4.The underlined word “pedestrians” means_________ in Chinese.

A．行人             B．司机             C．旅客             D．向导

5.In many cities, pedestrians are much safer because         .

A．no traffic is allowed in some streets         B．traffic is computer-controlled

C．cars move very slowly                    D．only one-way streets are open to traffic