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  3. The environment is everything that surrounds us: plants, animals, buildings, country, air, water—literally everything that can a

The environment is everything that surrounds us: plants, animals, buildings, country, air, water—literally everything that can a

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问题      The environment is everything that surrounds us: plants, animals, buildings, country, air, water—literally everything that can affect us in any way. The environment of a town, with its buildings and traffic and its noise and smells, where everyone is on top of everyone else, is a far cry from that of the countryside, with its fields and crops, its wild and domestic animals and its feeling of spaciousness. And the environment differs in different parts of the world.
       Ecology is the science of how living creatures and plants exist together and depend on each other and on the local environment. When an environment is undisturbed, the ecology of an area is in balance, but if a creature is exterminated or an unfriendly species introduced, then the ecology of the district will upset—in other words, the balance of nature will be disturbed.
      Man is a part of the environment and has done more to upset the ecology during his short span on earth than any other living creature. He has done this by his ignorance, his greed, his thoughtless foolishness and wastefulness.
      He had poisoned the atmosphere and polluted both land and water. He has squandered the earth’s natural resources with no thought for the future, and has thought out the most savage ways of killing his fellow men—and every other sort of life at the same time.
      Since man has done so much damage, it is up to him to try to put matters right—if it is not already too late. If there is to be any remedy for our ills, that remedy ultimately lies in the hands of the young, and the sooner they start doing something about it, the better.
     One of the main causes of the earth’s troubles is that the world is overpopulated and that this overpopulation is growing at an ever increasing rate. At the same time we are using up our natural resources—fuels and mineral ores—at an ever increasing rate with no hope of replacing them.
     For many years the earth has been unable to provide enough food for these rapidly expanding populations and the position is steadily worsening since the fertility of some of our richest soils has been lost and vast areas that were once fertile lands have turned into barren deserts. And the trouble with deserts is that they tend to creep outwards on to the fertile soils. What is now the northern Sahara Desert was the cradle of the civilized world 2,500 years ago.
     Even at this moment many of the earth’s natural treasures are being destroyed. Many valuable animals and plants are being killed off, and it is becoming increasingly difficult to grow enough food to preserve much of the earth’s population from starvation. The situation is getting out of hand. Time is running out. But with your help, we may be able to reserve the trends which threaten our very existence.
Which of the following is NOT implied in the passage?
选项 A、Overpopulation is the key to solve energy shortage.
B、Northern Sahara was once covered with vegetation.
C、Human beings are overusing natural resources.
D、Human beings are facing the threat of spreading deserts.
答案A
解析 推断题。第三段和第四段已经提到人类因为浪费而破坏了环境，第六段也提到我们正在耗尽自然资源，故C 人类正在过度使用自然资源”是正确的；第七段提到2500年前撒哈拉沙漠北部是人类文明的摇篮，可见当时撒哈拉沙漠北部是有植被覆盖的，故B 是正确的；第七段也提到很多肥沃的土地已经变成了贫瘠的沙漠，可见我们人类正面临着不断扩张的沙漠的威胁，故D 也是正确的。综上所述，只有A 无法推出，其意思“人口过多是解决能源短缺的关键”，原文中没有提及。
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