Please help me find the background of realistic literature in the 20th century. Give 20 points first, then add 30 points after adoption. Thank you.

U.edu.cn/SJ/2006/wgwxs/resource/courseware/foreign/20% ca% c0% BC% CD% cf% D6% ca% b5% D6% F7% D2% E5% ce% C4% d1%A7.

/course 2/wgwxs/Kejian/29% B6 % Fe % Ca % AE % Ca % C0 % BC % CD % CF % D6 % Ca % B5 % D6 % F7 % D2 % E5 % Ce % C4 % d 1% A7 % A3 % A8 %。