问题描述：
stand live be science problem stay think way come crowd There are many people in the world now. There will [1]____a lot more people next century.The earth will be very [2]____and there will be a little room for each person.Maybe there will be [3]_____room only on the earth 600 years later.That will be a very serious[4]____ .So man is [5]_____of a way to solve the problem.The moon is the satellite of the earth.Mwybe man will go to [6]_____ on the moon one day.But there is no air,no plants and no life.So[7]_____are doing experiments in many [8]____. They have to do many things before man can [9]_____on the moon.I am sure our dream will [10]______true in the next century.
问题解答：
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