人教版（2019）必修3《Unit 4 Space Exploration Section C》2021年同步練習卷

Ⅰ.單句填空

• 1．They are determined

  （recycle） their garbage because they care about the environment.
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• 2．The research

  （lack） solid evidence，and therefore，its conclusions are doubtful.
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• 3．Can you tell the pupils why ships are able

  （float） on the sea？
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• 4．I haven't seen Sara since she was a little girl，and she has changed

  recognition.
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• 5．Only when agriculture is fully developed can industry have

  （sufficiency）materials and markets.
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• 6．Mankind has always been keen

  exploring and learning more about the world we live in.
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• 7．Do you know who is the first person that got

  （marry） in space？
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Ⅲ.完成句子

• 20．We were astonished

  （發現） the temple still in its original condition.
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• 21．The children all turned

  （看）the famous actress as she entered the classroom.
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  解析