Visitors were        at the        pictures that the guide showed.

A．amazed; amazing

B．amazed, amazed

C．amazing, amazing

D．amazing, amazed

在单链表中，删除p所指结点的直接后继的操作是 ( )

A．p—＞next=p—＞next—＞next;
B．p=p—＞next;p—＞next=p—＞next—＞next;
C．p—＞next=p—＞next;
D．p=p—＞next—＞next;