During just one minute, 174 babies are born in world. That means people 1 find food for over 250, 000 mouths 2 in one day. The population problem 3 the greatest one of the world today.

　　The world's population is growing faster and faster. In 1990, the population 4 over five billion. An UN re port 5 that the world population will pass six billion 6 the end of the twentieth century. People say that by the year 2010, it will be seven billion. That means 7 in about 600 years, there will be standing 8 only on the earth. There 9 enough space for anybody 10 .

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通读下面短文，掌握其大意，然后从1～10各小题四个选项中选出最佳答案。

　　Ten thousand years ago, the world's population was very small. For several thousand years, it grew quite 　1　. But during the last three or four hundred years it 　2　very quickly. Today it is still growing faster than 　3　. About 174 babies are born in the world 　4　just one minute. That means people have to find food for 　5　mouths more in one day.

　　The population problem may be the 　6　one of the world today. People say that by the year 2010, the world's population may be seven billion. This means we must 　7　more food, and have smaller families with fewer 　8　healthier children. If we don't do these, the results will be very 　9　. There will be standing room only on the earth. There won't be enough 　10　for anybody else.

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