请问og14

xiaopinpin2

og14

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.
(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

请问A选项为什么不能选？谢谢！

zzip

estimated to be 用在书面语中，

estimated at + 价格

dashasha

答案是D吗？好久没看GMAT了，突然看一下，盯了题目半天晕了半天。

为什么你要选A呢？A的意思压根就不对啊。谈谈你为什么要选A啊。

xiaopinpin2

呵呵，谢谢啊，我觉得a和d的不同就在to be 和at的区别上吧，og的解释说a不符合习惯，我觉得这样解释好像有些牵强，好像也见过estimate接at的。

littlesharon

同疑问。。。。