单项选择题

How do students find out about water pollution

A．They consult pollution experts.
B．They collect water samples.
C．They conduct species surveys.
D．They read books on pollution.
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单项选择题
In Smith's view, monopolies ______.
A．will lead to the maximization of production
B．can hardly realize the checks and balances of competition
C．may bring about high production and low demand
D．will not benefit society in the long run
单项选择题
According to the author, Green EFL has all of the following advantages EXCEPT that ______.
A．students will be better able to meet challenges in the future
B．students learn the target language with less difficulty
C．students can achieve a better understanding of the environmental problems
D．students will acquire cultural values like "Americanness" and "Englishness"
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