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Why are coral reefs called "the rainforests of the sea"?

  • A.Because they are home to a wide variety of sea life.
  • B.Because they can protect our coasts from storms.
  • C.Because they might supply natural medicines.
  • D.Because they look like rainforests.
试题出自试卷《2017成人学位英语真题(北京上半年)》
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