单项选择题

The snakehead is very perilous because it ______.

A．has rows of sharp teeth
B．can dart out of hiding holes to chase, and catch
C．may devour every other fish in the lake or pond
D．is regarded as top predator

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热门试题

单项选择题

In the sentence these newcomers will be at their own expense (Line 2, Paragraph 3), their probably refers to ______.

A．these newcomers
B．rich countries in "first-world"
C．many bosses, workers and politicians
D．bosses, workers and politicians in the rich world

单项选择题

This passage mainly centers on ______.

A．the dramatic shift of the world economic balance
B．the impact of the emerging economies of the "third-world"
C．China and India's rapid economic development
D．rich countries' gain and loss in recent world economies