Because of the Mid-autumn Day happening to come along, we have just enjoyed a lo
题型：不详难度：来源：
Because of the Mid-autumn Day happening to come along, we have just enjoyed a longer National Day vacation than ever before, but it is estimated that it will be 38 years ___________ we can experience such a coincidence again.| A．that | B．before | C．since | D．when |
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答案
| ：B |
解析
| ：考查特殊句式。句式：It be+一段时间 before从句。表示：一段时间以后某事才发生。句意：据估计38年以后我们才能又一次经历这样的巧合。故B正确。本句式的考查务必要注意时态，before从句里用一般现在时代替将来时，前面的主句用将来时。 |
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