Scheie将窄角分为四级，能看见前部小梁者为（）
A.窄Ⅰ
B.窄Ⅱ
C.窄Ⅲ
D.窄Ⅳ
参考答案：C
―Are you disappointed with the result of the experiment?
―No. ______, I’m pleased with it.
A．On the contrary
B．As a result
C．What’s more
D．On the one hand
哪种心脏病最易发生感染性心内膜炎（）.
A.先天性心脏病室间隔缺损
B.先天性心脏病房间隔缺损
C.冠状动脉粥样硬化性心脏病
D.风湿性心脏瓣膜病
E.肺源性心脏病
