房间隔缺损患者，胸片检查一般不显示（）
A.肺动脉段突出
B.肺门舞蹈征
C.左心室增大
D.右心房增大
E.右心室增大
参考答案：C
The boys and girls were happily making a snowman, _______ with cold.[ ]
A. their faces red
B. their faces were red
C. their faces turned red.
D. their faces to be red
男性，25岁，入睡前无何感觉，晨起不能下地行走，排尿正常。体检：颅神经正常，四肢弛缓性瘫痪，感觉正常，腱反射消失，为明确诊断，首先应作的实验室检查是（）
A.肌电图
B.脑电图
C.血清钾
D.测血糖
E.腰穿
