A、p -> next = null;
B、p = p -> next;
C、p=p -> next -> next;
D、p -> next = p -> next -> next;
喵查答案:p -> next = p -> next -> next;
A、p -> next = null;
B、p = p -> next;
C、p=p -> next -> next;
D、p -> next = p -> next -> next;
喵查答案:p -> next = p -> next -> next;