Sichuan province by the earthquake，causing difficulties to the post-festival road transport.
A. were affected
B. was affected
C. had effected
D. has affected
网友回答
A. were affected
(答案→)B. was affected
C. had effected
D. has affected
解析：考查表示影响意义的词的辨析。affect 为动词，意思是“影响；感动”；effect为名词，意思是“影响；效果”。按照句意选择B。