下列哪个器官既属奇恒之腑，又属六腑
A．髓
B．胆
C．脑
D．脉
参考答案：B
The textbook is filled with cases about ________ our life has developed thanks to new inventions.[ ]
A．what
B．where
C．why
D．how
为了进一步加快口岸通关速度，方便出口货物通关放行，国家质检总局推出检验检疫绿色通道制度。 ( )
