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[Sentence Correction]
试题详情
题目：
Paleontologists believe that fragments of a primate jawbone unearthed in Burma and estimated at 40 to 44 million years old provide evidence of a crucial step along the evolutionary path that led to human beings.
选项:
A、at 40 to 44 million years old provide evidence of
B、as being 40 to 44 million years old provides evidence of
C、that it is 40 to 44 million years old provides evidence of what was
D、to be 40 to 44 million years old provide evidence of
E、as 40 to 44 million years old provides evidence of what was
答案:
D
提问：
在A和D之间不知道怎么选
解答：
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提问：
在A和D之间不知道怎么选
解答：
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提问：
不知道如何排除选项
解答：
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