单选题 Who ______ has read Tolstoy's great novels can forget their fascination?
A. who B. which C. that D. ever

【正确答案】 C
【答案解析】[解析] who后面的限制性定语从句用关系代词that引导而不用who。同样，that后面的定语从句用关系代词which而不用that引导，这是为了避免重复。