英语四级

单选题Why does the author compare rain forests with coral reefs?

A．They are approximately the same size.
B．They share many similar species.
C．Most of their inhabitants require water.
D．Both have many different forms of life.

参考答案：D进入在线模考
 定位：根据题干信息compare rain forests with coral reefs可将答案定位到第一段第二、三句。
解析：作者之所以将热带雨林生物体系与珊瑚礁生物体系相比较，是想说明它们在物种的丰富性方面类似。故选D，其中的many different forms of life是对原文中richness of life的同义转述。

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1The passage suggests that most rain forest species are

A．insects
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2 The author argues that there is more diversity of life in the sea than in the rain forests because

A．there are too many insects to make meaningful distinctions
B．more phyla and classes of life are represented in the sea
C．many insect species are too small to be divided into categories
D．marine life forms reproduce at a faster rate

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3 Which of the following conclusions can be drawn from the passage?

A．Ocean life is highly adaptive.
B．Ocean life is primarily composed of plants.
C．The sea is highly resistant to the damage caused by pollutants.
D．More attention needs to be paid to preserving ocean species and habitats.

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