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Can Man Expand to other Planets ?

As everyone knows , natural environment on the other , planets is very severe and different from that on the earth. Therefore , it is im-possible for man to survive there . Moreover , how to transfer so many people to other planet as the capacity of our spacecraft is limited; Fur-thermore , food and other energy resources should also be taken intoconsideration . In short , as far as our present technology and equipment are con-cerned , it is not likely that man expand to other planets .
签名要隐晦。

神少要是你会读的话我怎样都行```
wO鐹鍀Wo在.漝樌。

   JuSt A gAmE.

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呵呵~~~~~~ 继续发扬~~~~~

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你死了`骂神少`他很小气的

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神少发神经``

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就是`都没文化

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呵呵~~~ 两兄弟一个样
       

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楼上的紫心枫,呵呵~!老弟弟好久不见,还是那么DIAO,,, 还不改名字啊 ???
[img]http://images.blogcn.com/2005/10/12/11/leftbaby,2005101221314.jpg[/img] [fly][color=blue]不需要任何理由把你拐走[/color][/fly]

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他哪有这种水平啊~!
☆没有目标的努力,就像在黑暗中远征!! 爱情欠费停机。。 已无能力再缴费。。

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你哪里弄来的 ?

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