2. 外语
  3. Look at your watch for just one minute. During that short period of time, the population of the world had increased by eighty-fi

Look at your watch for just one minute. During that short period of time, the population of the world had increased by eighty-fi

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问题     Look at your watch for just one minute. During
that short period of time, the population of the world
had increased by eighty-five people. Perhaps you think        【S1】______
that isn’t much. In the next hour, more than 5,000
additional people will be living on this planet. So it
goes, hour after hour. In one day, there are about
120,000 additional mouths to feed. Multiply this by
365. What will happen after 100 years?                        【S2】______
    This population explosive may be the greatest             【S3】______
challenge of the present time. Within the next forty
years, the world population may double. Can the new
frontiers of science meet the needs of the crowded
world of tomorrow?
    If the present rate of population increase continues
for the next 600 or 700 years, there will be standing
rooms only. Each will have between 3 to 10 square feet        【S4】______
of space in which to live. This contains the                  【S5】______
mountaintops, deserts, and the ice and snow fields of
the polar areas. Of course, no one expects such a thing
to happen. War, plague, famine or some other
catastrophe can be expected to occur long when the            【S6】______
population reaches this point. Actually, the danger is in     【S7】______
an overcrowded world where people are  huddled
together so that they cannot move arms and legs, but in
an upset balance between population and resources.
    Since 600 years is so far away, take a look directly
ahead. How can the hungry people be filled? About             【S8】______
half of the babies born this year will not have enough to
eat. Is the world going out of water? Will there be           【S9】______
enough fuel? What will supply the energy need to run          【S10】______
the machine of tomorrow’s world? Certainly, man must
look to the future and find new ways of providing for
his needs.
【S9】
选项
答案Therefore→However
解析
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