问道PREP，求助

wangkerui

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

好像D/A两个版本答案，到底是什么呢

intersun

discovery 和documentation平行

白金龙

应该都选D的..PREP的语法注释里面都选D...