实习医师:你好,摩尔根先生。我是米尔斯医生。Patient:My bowel movements have been kind of black for the past t wo days,and I feel weak,too ﹒.病人:两天来我的大便有点儿发黑,同时还感到虚弱。Intern:Have your BM ’ s ever been this black before?病人:没有,这是头一次。Intern:Whereis that?病人:就在这儿?病人:是的,只固定在那一个地方。Patie ......