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  3. Man can not go on increasing his number at the present rate. In the （ 1 ） 30 ...

Man can not go on increasing his number at the present rate. In the （ 1 ） 30 ...

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问题 Man can not go on increasing his number at the present rate. In the （ 1 ） 30 years man will face a period of crisis.__（ 2 ）__ experts believe that there will be a widespread food shortage.Other experts think this is too pessimistic, and that man can prevent things from getting worse than they are now. But remember that two thirds of the people in the world are under-nourished（有营养的）or starving now.
One thing that man can do is to limit the （ 3 ） of babies born. The need （ 4 ） this is obvious, but it is not （ 5 ） to achieve. People have to be persuaded to limit their families.
5、根据短文内容，在A、B、C、D、E五个选项中，选出最佳答案填入文中【5】处。（）.
选项 A. for
B. easy
C. Some
D. number
E. next
答案B
解析人类不能继续按现在这样的增长速度增加人口了。否则接下来的30年人们将要面临一个危机期。有些专家认为，人类将会面临严重的粮食短缺。另一些专家认为这种观点太悲观了，觉得人 类可以在情况变得更糟糕之前改变这种局面。但目前世界上有三分之二的人处于营养不良或是饥 饿之中。
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