题目内容

4. A history book says that Huangdi (黄帝) in ancient China created  (轮子) about 4,600 years ago.

  4. wheels

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1. 居里夫人和她的丈夫由于发现了镭而于1903年获得 了诺贝尔奖。

Madame Curie and her husband won the Nobel Prize in 1903  radium.

8. 那些危险的工作可以让机器人做。

Robots can be made to .

5. 这只猫经常撞翻东西，给它的主人带来了太多的麻烦。

The cat often and brings its master .

7. We need  (煤气) for cooking.

1. 探索太空很难。

It's difficult .

9. Don’t download this file (文档) . There may be some   ( virus) hiding in it.

11. It's such a heavy stone that I can't carry it.

The stone is   for me   .

7. 你最多20岁。

You are  20 years old.

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