2013-02-07 11:53:26 公务员考试网 http://www.huatu.com/ 文章来源：华图宏阳股份
根据以下资料回答问题81—85。
Human and the EarthIn terms of the evolution of life on Earth, human beings have just arrived. Despite their short time on Earth, however, people have brought about enormous changes to the surface of the planet—changes far out of proportion to the interval of time they have occupied it.
People have more control over their surroundings than any other species on Earth. With the combination of intelligence and manual skill (allowing us to make and use tools), people have found ways to use plant and animal resources, mineral ores, fuels, and many other materials and resources from the Earth.
As the number of people on Earth increases, it becomes increasingly difficult for the population to survive on the resources of the land. The amount of land is limited. Although agricultural production can be increased by use of machinery such as tractors and the addition of fertilizer, the land ultimately can produce only so much food and no more.
As the human population grows, people consume more. Clearly, some locations on Earth already have too many people; in many of these areas, future increases will surely bring about more poverty and suffering. Yet people in rich nations use proportionally far more of the available resources than people in poorer nations. As they consume these resources without restraint, they also waste large amounts of them.
People are only a very small fraction of all the living things on the planet. Yet their numbers create a drain on resources that cant be renewed. For example, the amount of water on Earth is limited，this water is cleaned through natural processes. However, the natural processes for filtering water can clean only a certain amount of water by removing the pollution. Likewise, a limited amount of petroleum can be found under the Earths surface. Petroleum is a valuable resource. Should people use it up to manufacture petrol for automobiles? As people work to control the planet and make life comfortable, are they using up resources that are needed for their survival?
81. In terms of the evolution of life on Earth, the history of human beings is ().
A. very shortB. very long
C. as long as that of other animalsD. as long as that of the Earth
82. Why have people more control over their surroundings than any other species on Earth?()
A. Because of their intelligence and manual skill.
B. Because they can use plant and animal resources, mineral ores and fuels.
C. Because they are cleverer than any other animals on Earth.
D. Both A and B.
83. What makes people feel hard to live on Earth?()
A. Fertilizer. B. Use of machinery.
C. Limited land. D. Limited mineral resources.
84. Who use more available resources according to the passage?()
A. Rich people on Earth. B. Poor people on Earth.
C. People in developed countries. D. People in developing countries.
85. Which of the following statements about resources on Earth is not correct?()
A. They can not be renewed.
B. Water is a kind of resource which can not be renewed.
C. Some of the resources are valuable.
D. Many resources can be recycled so we dont need to worry about them.
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