中药称的“鸡内金”存在于下列鸡消化系统的哪个器官？（）
A、食管
B、嗉囊
C、腺胃
D、肌胃
参考答案：D
--- Who should be responsible for the accident?
--- The boss, not the workers. They just carried out the order _______.
A．as told
B．as are told
C．as telling
D．as they told
某选厂原品为26%，精品为66%，尾品为6%，该选厂的回收率是多少？
