题目

亚欧大陆之间的分界线很明确，其中不是两者分界线的是：（  ） A.乌拉尔山                       B.伏尔加河  C.大高加索山脉                   D.土耳其海峡 答案：B There is no experience you can have ________ is more exciting than skating on real ice． [　　] A．of which B．what C．that D．with whom