-----You’ve given us a wonderful Chinese dinner, Mrs Wang.

-------__________.

a. I’m glad you enjoyed it

b. Oh, I’m afraid I didn’t cook very well

c. Come again when you are free.

d. It’s not necessary for you to say so

甲氯芬酯兴奋中枢的机制是

A．促进脑细胞氧化还原代谢

B．促进蛋白质的利用

C．促进脂肪的利用

D．促进糖的利用

E．调节细胞代谢