题目内容

Many people believe we are heading for environment disaster ____ we basically change the way we live.

A. if
B. but
C. unless
D. once

试题答案

C
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Many people believe we are heading for environment disaster ____ we basically change the way we live.
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2011江西会昌中学第一次月考试卷

Many people believe we are heading for environment disaster       we basically change the way we live.

  A. if                  B. but                     C. unless               D. once

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