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9-10高二下·辽宁本溪·阶段练习

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be based on 过去分词作状语

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1 . ________ on ten years of observation and study, Professor Wang announced that everyone dreams every night，whether they realize it or not.

A．Basing	B．Based
C．Been based	D．Having based

2016-11-26更新 | 156次组卷 | 3卷引用：辽宁省本溪一中2009-2010学年高二下学期3月月考试题（英语）