单项选择题

The passage suggests that most rain forest species are ______.

A．insects
B．bacteria
C．mammals
D．birds
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单项选择题
The author's tone in this passage is ______.
A．impassioned
B．hysterical
C．dramatic
D．sarcastic
单项选择题
The main topic of the passage is that ______.
A．humans are destroying thousands of species
B．there are thousands of insect species
C．the sea is even richer in life than the rain forests
D．coral reefs are similar to rain forests
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