2. 外语
  3. The main advantage of wind powered stations is that______. The main disadvantage of wind power is that it______.

The main advantage of wind powered stations is that______. The main disadvantage of wind power is that it______.

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问题 The main advantage of wind powered stations is that______.
The main disadvantage of wind power is that it______.
选项 A、is competitive
B、produces more pollutants
C、is low in efficiency
D、is ugly
答案C
解析 判断题。根据文章第三段的这句话；At present，however，installation and running costs and low efficiency mean that wind power is not economically competitive with conventional fossil or nuclear stations．可得出答案。
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大学英语四级

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