Zhang Ziyi plays the part Yu Jiaolong, who plays an important rolethe film.A. of; inB. in;

Zhang Ziyi plays the part Yu Jiaolong, who plays an important role the film.
A. of; in
B. in; of
C. of; of
D. in; in

(答案→)A. of; inB. in; ofC. of; ofD. in; in解析：这题考查介词，play the part of…是“扮演…角色”play an important role in是“在…中起重要的作用”，所以选A，句意是：章子怡扮演的是玉姣龙的角色，她在电影中起着重要的作用。

这个解释是对的