药典凡例中的相关规定不具有法律约束力。
参考答案：错
-----Is this the first time you______ Chengdu?
-----No. But the first time I______ here, the city wasn’t so beautiful
A．visited; came
B．visited; have come
C．have visited ; have come
D．have visited; came
成人高血压的诊断标准为（）
A.BP≥140/90mmHg
B.BP≥150/90mmHg
C.BP≥160/90mmHg
D.BP≥160/95mmHg
E.BP≥165/95mmHg
