下列关于皮革状胃的X线征象，错误的是()
A．胃粘膜皱襞形态不变
B．胃腔缩小
C．幽门管多呈关闭状态
D．胃壁蠕动消失
E．食管可继发扩张
参考答案：C
—_____your mother?
—She's a worker. [ ]
A. How's
B. What's
C. When is
D. Why is
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