_____ as much as one-fourth of all timber harvested is not used proved to be false. A. The estimate B. It is estimated that C. They are estimated D. The estimate that

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题目内容（统招专升本-----英语）

_____ as much as one-fourth of all timber harvested is not used proved to be false.
A. The estimate B. It is estimated that
C. They are estimated D. The estimate that

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