全冠龈上边缘的缺点是
A．易产生继发龋
B．容易造成菌斑附着
C．边缘不易密合
D．在前牙区不美观
E．易形成肩台
参考答案：D
There are a lot of bikes here. [ ]
A. electric
B. electrical
C. electrician
D. electricity
患者胃痛隐隐，喜温喜按，空腹痛甚，得食痛减，神疲乏力，大便溏薄，舌淡苔白，脉虚弱。其治法是
A．散寒止痛B．温中散寒C．温中健脾D．温胃止泻E．温补脾肾
