对此患者应诊断为
A．安氏Ⅱ1
B．安氏Ⅱ2
C．安氏Ⅰ
D．安氏Ⅲ
E．牙列轻度拥挤
参考答案：A
—Are these his cousins?
—_______. They are his brothers.[ ]
A. Yes, they are.
B. No, these aren’t.
C. Yes, these are.
D. No, they aren’t.
正常心电图检查
