心脏病患者拔牙应视为禁忌证的是()。
A.一年前发生的前壁心肌梗死
B.血压170/100mmHg
C.未控制的心律不齐
D.心功能Ⅱ级
E.心功能正常的心脏病
参考答案:C
While I _____ with my friend, she came in.[ ]
A. am talking
B. was talking
C. talked
D. am going to talk
简述薄型硬木地板粘贴的工艺顺序。