单纯性牙周炎全身治疗的首选药物是()
A．红霉素
B．牙周宁
C．中药固齿剂
D．维生素类药物
E．大环内酯药物十甲硝唑
参考答案：E
M. Can I help you?
W- Yes, please. 小题1: . I want to give her a gift, but I don’t know what to buy.
M.. Maybe you can buy her some flowers.
W. Great ! 小题2: ?
M. I think carnations (康乃馨) are OK. They stand for beauty and also show your
love and respect to your mother.
W: 小题3: ?
M: Twenty yuan a bunch (束).
W. OK. 小题4: . Here’ s the money.
M. Happy birthday to your mother!
W:小题5: .
以下指标中，提示休克好转的是
A．脉压15mmHg
B．收缩压80mmHg
C．尿量30ml/h
D．皮肤呈花斑样
E．脉搏100/min
