房间隔缺损的肺动脉第2心音
A．亢进B．减弱C．消失D．不分裂E．正常
参考答案：A
做口算125×7=？你是怎么想的？把你的思考过程写出来．
people in your family wear glasses? [ ]
A. How
B. How much
C. How many
