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.
小题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.

小题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.

小题3:What does the underlined word “pea-soupers” refer to?

A．Smog.

B．Smoke.

C．Gas.

D．Coal.

小题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

小题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.

Climate is the average weather usually taken over a 30-year time period for a particular region and time period. Climate is not the same as weather, but rather, it is the average pattern of weather for a particular region. Weather describes the short-term state of the atmosphere (大气).
The climate is changing. Many agreed that climate change may be one of the greatest threats (威胁) facing the planet. Recent years show increasing temperatures in various regions, and/or increasing extremities (极端性) in weather patterns.
Is the Earth getting warmer? Yes! The Earth has warmed by about 1°F over the past 100 years. But why? Well, scientists are not exactly sure. The Earth could be getting warmer on its own, but many of the world’s leading climate scientists think that things people do are helping to make the Earth warmer.
Global Warming may be a big problem, but can you make a difference? Yes! There are several little things you can do to make a difference. Try carpooling. This will help reduce the amount of fossil fuels going into the atmosphere. Whenever you use electricity, you help put greenhouse gases into the air. Turn off lights, the television, and the computer when you are through with them. Also, planting trees is fun and a great way to reduce greenhouse gases. Trees absorb carbon dioxide, a greenhouse gas, from the air. Finally, don’t forget about recycling.
小题1:Climate is         weather.

A．the same as	B．different from
C．a kind of	D．part of

小题2: The Earth has warmed by about 1°F over the past 100 years         .

A．only because of human activities

B．but scientists are not exactly sure of the reasons.

C．and we can do nothing to it.

D．and it’s getting warmer on its own

小题3:Global Warming may be a big problem, but we can do the following things to make a difference except          .

A．carpooling	B．saving electricity
C．cutting down more trees	D．recycling

小题4:What can be the best title of the article?

A．Climate and weather.

B．Weather and climate changing.

C．Climate changing and global warming.

D．Weather and global warming.