Nowadays meteorologists（气象学家）can make good forecast for 3 or 5 days. Perhaps soon they may be able to do that for a week or ________.A.more aheadB.more behindC.less aheadD.less behind
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A解析解析：题意为“现在气象学家能够很好地预测3到5天的天气。或许不久后，他们能够预测一周或更提前。”A项是“更提前”；B项是“更往后”。C、D是不到，减少。故选A。难度大。