Some birds like to sit on a sheep because . We learn from the text that corals depend on plants for .

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问题 Some birds like to sit on a sheep because ______.
We learn from the text that corals depend on plants for ______.

选项 A、comfort
B、light
C、food
D、oxygen

答案C

解析细节题。根据文章第二段第三四行“…taking some of the waste products from the coral and giving in return oxygen which the animal needs to breathe．”可知。所以[D]正确。

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公共英语二级笔试

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