og14请指教：）

rice3434

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

答案是D。想问一下estimate和什么并列阿？是unearthed么？怎么解释阿？还有provide是什么成分阿？

谢谢：）

LES

estimated 是与unearthed并列作后置定语修饰 a primate jawbone, provide 是宾语从句的谓语。

rice3434

以下是引用LES在2004-4-16 22:35:00的发言：
estimated 是与unearthed并列作后置定语修饰 a primate jawbone, provide 是宾语从句的谓语。

哦 明白了 谢谢：）