题目内容
（请给出正确答案）
[主观题]
There would be no air pollution to this city because ______.A．there was a special plant to
There would be no air pollution to this city because ______.
A．there was a special plant to treat the polluted air
B．the city was away from the mainland
C．people in the city did not burn oil or coal
D．vehicles there were powered by electricity
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