The decision about such a big project can not be made ______ each member of the board agrees.

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问题 The decision about such a big project can not be made ______ each member of the board agrees.

选项 A、if
B、unless
C、though
D、as

答案B

解析本题考查状语从旬连词的用法。根据空格处前后的句义可以判断，此处需要一个引导条件状语从句的连词，从句是条件，主句是结果。在四个选项中，选项A和选项B都可用于引导条件状语从句，选项B的unless等同于if．．．not，与选项A的意思刚好相反，适合本句句义。故答案为B。

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大学英语三级A级

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