单项选择题

The main disadvantage of wind power is that it______.

A．is competitive
B．produces more pollutants
C．is low in efficiency
D．is ugly
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单项选择题
The main advantage of wind powered stations is that______.
A．it does not have polluting effects
B．it is available at any time
C．it can satisfy the state's energy needs
D．it can beautify the environment
单项选择题
It can be inferred that Los Remos______.
A．is a country in America
B．is a town near Chernobyl
C．is a place in Mexico
D．is a city in California
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