The nurse is providing preoperative care to a client scheduled for an appendectomy. Which statement regarding pain control is most appropriate

A. "There’s no need to ask for pain medication, you’ll receive it on a schedule. "
B. "Take your pain medication after walking so that you won’t feel dizzy. "
C. "Take your pain medication before your pain becomes intense. "
D. "Use as little pain medication as possible to avoid addiction. "

肿瘤血行转移不常累及的器官是：

A．肺

B．脑

C．肾

D．脾

E．肝