下列哪项不是扩张型心肌病的超声心动图表现。()
A.心脏四腔均扩大以左室大为主
B.左室流出道变窄
C.室间隔运动减弱
D.左室后壁运动减弱
E.二尖瓣口变小
参考答案:B
There used to be a tall tree in front of our classroom, ____? [ ]
A. used there
B. didn't there
C. wasn't there
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