关于恶性溃疡下列正确的是()
A.溃疡形状不规则,一般较小
B.底部平坦,有黄白苔
C.周围皱襞规则
D.边缘呈结节状隆起
E.胃壁僵硬,蠕动快
参考答案:D
.It is often said that an American starts speech with a joke, __ a Japanese has an apology to make.
A.as
B.when
C.which
D.while
帕金森病初发最常见的症状是()
A.静止性震颤
B.步态障碍
C.肌强直
D.运动迟缓
E.认知障碍