单项选择。

— Are you going to Beijing tomorrow?

— Yes, ______. [ ]

A.I going

B.I am

C.I to

D.I do

募穴指的是

A．脏腑经气汇聚于头面部的腧穴

B．脏腑经气汇聚于胸腹部的腧穴

C．脏腑经气汇聚于腰背部的腧穴

D．脏腑经气汇聚于下肢部的腧穴