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初二英语作文标题题目:人类探索太空作文网 初中
来源: 未知 作者:wangyu更新日期：2011-05-23 14:29:47 浏览:次所属分类/专：作文网 小学
Scientists think that there has been life on Earth for millions of year. However, we havent found life on other planets yet. Because none of them has an environment with air, people and things cant grow. The Earth is a planet and it goes around the sun. T
Scientists think that there has been life on Earth for millions of year. However, we haven’t found life on other planets yet. Because none of them has an environment with air, people and things can’t grow.
The Earth is a planet and it goes around the sun. The sun and its planets are called the solar system. It's a small part of our galaxy.
Scientists have sent lots of spacecraft to look at other planets in our solar system, and some spacecraft have gone beyond it. However, no one has discovered any life in space yet.
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