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阅读短文,根据短文内容及首字母提示在空白处填入一个适当的单词。

The universe is very big and it is very difficult to understand h1. large the universe is. But we know the earth is our home. It is a p2. and it goes around the sun. The moon goes a3. the earth.

Some astronauts have b4. to the moon and scientists have sent many spacecraft to some other planets. But so far, we haven't d5. life on other planets. Because none of them has an e6. like that of the earth.

Scientists have also found many other galaxies and they are very f7. away. No spaceship has travelled far enough to r8. them.

Is there any life beyond(在……以外) the s9. system in the universe? I think there is still a long way to go to know that. When I grow up, I want to become an a10. and work on China's space station.

八年级英语单词填空中等难度题

少年,再来一题如何?
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