下述哪项不是扩张型心肌病超声表现：
A．心腔明显扩大
B．收缩功能减退
C．舒张功能正常
D．室壁运动普遍减低
E．室壁收缩期增厚率减低
参考答案：C
--- Is Jim in the gym by himself?
--- No. There is another boy ________ tennis with him.
A．playing
B．play
C．plays
D．to play
自觉呼吸短促而不相接续，气短不足以息，称之为（）
A.喘
B.哮
C.短气
D.少气
E.太息
