Ryunosuke Akutagawa's knowledge of the literatures of Europe, China, and that of Japan were instrumental in his development as a writer, informing his literary style as much as the content of his fiction.
(A)that of Japan were instrumentalin his development as a writer, informing his literary style as much as
(B)that of Japan was instrumental in his development as a writer, and it informed both his literary style as well as
(C)Japan was instrumental in his development as a writer, informing both his literary style and
(D)Japan was instrumental in his development as a writer, as it informed his literary style as much as
(E)Japan were instrumental in his development as a writer, informing both his literary style in addition to
题目分析：根据意思我们知道应该是欧洲、中国及日本三个国家的知识。没有必要加that，主语是knowledge，谓语应该用单数，干掉E。剩下C和D，D用as it 。。。。as much as，一看就不是人类的表达方式，干掉，选C。
