第四部分 阅读理解（每小题3分，满分15分）

This summer, heavy rains have caused huge floods which have killed more than 1,000 people and left more than 1 million homeless in China and Eastern Europe. Scientists at the Earth Summit said that these natural disasters were a wake-up call for human beings to act more quickly to stop the planet from becoming too hot.

The United Nations has made the environment one of the key areas for discussion at the summit in Johannesburg, South Africa. About 65,000 people from 185 countries are attending the meeting, which is being held from August 26 until September 4.

Scientists say that many things that humans have been doing over the past 100 years, such as deforestation (采伐森林) and sending greenhouse gases into the atmosphere, have changed the climate of the earth.

Robert Watson, the UN's leading scientist, believes the earth's temperature could rise by up to 5.8 degrees centigrade over the coming century.

"This change will lead to more extreme weather patterns, such as floods and droughts," he said at the summit.

This summer the central and southern China have faced floods due to deforestation and soil erosion (水土流失). On the other hand, much of the country is suffering from drought.

The very serious water shortages, the worst in the past 100 years, have hit about 1 million people in Shandong Province. The region received just half its normal yearly rainfall from June 1 to August 29. Farmers have had to buy water from other places.

The Chinese officials at the Earth Summit say greenhouse gases are one of the country's biggest environmental problems. This is because these gases are one of the biggest reasons why there has been such a great change in the earth's climate.

As more people use more cars, more gases will be sent into the air, which will cause the earth to get warmer.

"The situation will become worse if China doesn't choose the right means of transport," said Liao Xiaoyi, president of the non-governmental group Global Village. "It's very important for China to develop its public transport instead of private cars."

Besides climate change, other important issues will be discussed during the summit. They include how to deliver food, water and sanitation to the poor, and how to maintain the biodiversity (保持生物多样化).

One of the key issues discussed at the Earth Summit: global 51

Cause Environmental problems 52 What 53 have been doing over the past 100 years. 54 (floods, draughts, serious water shortage, etc) The change of temperature will lead to more extreme weather patterns. China must 55 greenhouse gases: should choose the right means of transportation.

第五部分 书面表达（满分25分）

你认为政府是否应该限制购买小汽车？ 请你就你的观点写一篇文章，说明原因。

注意：字数100字左右。

参考词汇：traffic jam (交通阻塞)


Keys

1-5 ACCAC 6-10 CBAAB 11-15 CBBAA 16-20 BBAAC 21-25 ACBAD 26-30 ADDAB 31-35 BDCDB 36-40 CDABC 41-45 BCABD 46-50 ABCAB 51-55 warming; Measures; people/humans; Disasters; deal with

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