“肾为气之根”是指
A．人体阴气之根本
B．人体阳气之根本
C．肾主纳气
D．肾主气化
E．肾对精气有封藏作用
参考答案：C
____________professional violinist practices for several hours a day, but____________ violinist has his own way of playing the Beethoven concert.
A．Each, every
B．Every, each
C．One, a
D．All, each
下列哪个是分泌消化液的消化腺（）.
A、小肠
B、肝脏
C、食道
