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We need some more facts and figures ______ we make the final decision.  
A.sinceB.beforeC.afterD.until
B

试题分析:句意:我们需要更多的事实和数字才能做出最后的决定。Before“在…前面”,也可以结合语境翻译成“才…,就…”,A. since 自从,C. after在…后面,D. until直到,所以选B。
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