伴有青光眼的心绞痛患者禁用的药物是（）

A.50
B．100
C．200
D．20

A、p->next = pr->next; pr->next = p;
B、struct node * pTemp; pTemp = pr->next; pr->next = p; p->next = pTemp;
C、pr->next = p;
D、p->next = pr->next; pr = p;
E、pr->next = p; p->next = pr->next;