急！这道题目选什么？

38. In addition to her work on the Miocene hominid fossil record, Mary Leakey contributed to archaeology with her discovery of the earliest direct evidence of hominid activity and painstakingly documenting East African cave paintings.

A.  Leakey contributed to archaeology with her discovery of the earliest direct evidence of hominid activity and painstakingly documenting

B.  Leakey contributed to archaeology by her discovery of the earliest direct evidence of hominid activity and by painstakingly documenting

C.  Leakey was a contributor to archaeology with her discovery of the earliest direct evidence of hominid activity and with her painstaking documentation of

D.  Leakey’s contributions to archaeology include her discovery of the earliest direct evidence of hominid activity and her painstaking documentation of

E.  Leakey’s contributions to archaeology include her discovering the earliest direct evidence of hominid activity and painstaking documentation of

In addition to her work on the Miocene hominid fossil record, Mary Leakey contributed to archaeology with her discovery of the earliest direct evidence of hominid activity and painstakingly documenting East African cave paintings.

her work 是一个名词，后面对应一个名词，不对吗？

你选的B earliest direct evidence of hominid activity and by painstakingly documenting

是更本不对称的

刚睡醒，试着分析一下；首先由ｈｅｒ　ｗｏｒｋ判断出后面必须出现ｈｅｒ指代的核心词，因此ｅ，ｄ不对。前半句讲的是出了作品以外ｘｘｘ，所以后面应该是一件事，而不是Ｌ是一个什么，所以Ｃ的句子重心不对。ｗｉｔｈ有伴随，拥有的意思，而这里需要的是通过什么东西来ｃｏｎｔｒｉｂｕｔｅ，所以Ａ，Ｃ欠妥。