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Researchers in Germany haveunearthed 400,000-year-old wooden spears from what it appears was an ancientlakeshore hunting ground as stunning evidence of human ancestors whosystematically hunted big game much earlier than believed.
(A) it appears was an ancientlakeshore hunting ground as stunning evidence of human ancestors who
(B) it appears had been an ancientlakeshore hunting ground and is stunning evidence that human ancestors
(C) it appears to have been anancient lakeshore hunting ground and is stunning evidence that human ancestors
(D) appears to be an ancientlakeshore hunting ground, stunning evidence that human ancestors
(E) appears that it is an ancientlakeshore hunting ground, stunning evidence of human ancestors who
答案选D我没有问题,有问题的是from不是介词吗?介词后面怎么能跟从句what....呢,应该只能跟名词,名词短语,代词和v-ing啊!!求解释!
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