题目内容
Many people believe we are heading for environmental disaster _____we radically(彻底地) change the way we live.
A. but B. although C. unless D. until
【答案】
C
【解析】 略
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题目内容
Many people believe we are heading for environmental disaster _____we radically(彻底地) change the way we live.
A. but B. although C. unless D. until
C
【解析】 略