sc1-129 vs sc-1-52, 后天考,求助!

129.
(31370-!-item-!-188;#058&004475)

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

        (A) Mary Leakey contributed to archaeology through her
discovery of the earliest direct evidence of hominid activity and through her
painstaking documentation of

52.  
(27251-!-item-!-188;#058&003145)

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.

 (D) Leakey's contributions to archaeology
include her discovery of the earliest direct evidence of hominid activity and
her painstaking documentation of

注意：in addition to A, B … A和B不一定是同一类事物

我也正琢磨呢，明白了。