心室壁瘤的X线表现不包括（）
A.左室缘局限性膨凸
B.左心室"不自然"增大
C.左室缘搏动异常
D.左室壁钙化
E.心腰部膨凸，心尖圆隆上翘
参考答案：E
This exercise is difficult . [ ]
A. so, that few of us can do
B. so, that few of us can do it
C. too, for anyone of us to do it
D. too, for anyone of us to do
桥梁伸缩缝只需设置在梁端与桥台背墙之间。( )
