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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热门试题

单项选择题

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

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

单项选择题

The most probable conclusion supported by the passage would be ______.

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