______ we have enough evidence (证据), we can"t win the case.A．OnceB．As long asC．
题型：不详难度：来源：
______ we have enough evidence (证据), we can"t win the case.| A．Once | B．As long as | C．Unless | D．Since |
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答案
| C |
解析
试题分析：考查连词。A一旦；B只要；C除非；D自从。句意：除非我们有足够的证据，否则我们不能赢得这个案件。故C正确。 |
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