The nurse is teaching a client who has been prescribed allopurinol for the treatment of gout. Which instruction would the nurse give to the client

A. Increase alcohol intake while taking the drug.
B. Avoid foods that are rich in purine.
C. Take aspirin for pain.
D. Take the drug between meals to promote absorption.

下列生物不具备细胞结构的是    （   ）

A．向日葵

B．青蛙

C．甲流病毒

D．酵母菌