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GWD21-Q29 没有搜到前任讨论··
While studying the genetic makeup of corn, a new class of mutant genes was discovered by Barbara McClintock, a discovery which led to greater understanding of cell differentiation.
A. a new class of mutant genes was discovered by Barbara McClintock, a discovery which led
B. a new class of mutant genes in corn were discovered by Barbara McClintock, leading
C. Barbara McClintock discovered a new class of mutant genes, and it led
D. Barbara McClintock discovered a new class of mutant genes, a discovery that led
E. Barbara McClintock, who discovered a new class of mutant genes, leading
答案选D。
但是为何C错了呢?
Barbara McClintock发现的是a new class of mutant genes,这应该也能用it来指代吧。。我觉得D中DISCOVERY应该是一件事情,不如it好吧。。
但是我错了··
请指教! |
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