标题: 一道争议题？？ [打印本页] 作者: yaoxiayi 时间: 2010-6-12 19:33 标题: 一道争议题？？ 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