问题
选择题
One of the most interesting places in Yangzhou ________ are often visited by foreigners is the West Slender Lake.
A．what
B．who
C．that
D．/
答案
答案：C
定语从句。根据句意：被外国旅游者参观的最著名的地方是西湖。Are often visited by foreigners修饰先行词places。