单选题：To avoid a significant amount of warming this century，we mu

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题目类型：单选题
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To avoid a significant amount of warming this century，we must__________． A．cut emissions by a dramatic factor
B．use coal instead of natural gas
C．close down au the power plants
D．find new ways of using natural gas

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Paragraph 5_____A Ways Of Departure from Immature and Simpli

Paragraph 5_____A Ways Of Departure from Immature and Simplistic ImpressionsB

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关于可撤销民事行为的特征的说法中，正确的是（　　）。A．撤销权人对撤销权的行使与否拥有选择权 B．当事人可以通过承认的表示使撤销权消灭 C．撤销权的行使没有限制

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