患者男,16岁。一年前外伤致上前牙冠折末治,现唇侧牙跟反复起脓包,最能明确诊断的检查项目是
A.温度测试
B.叩诊
C.x线片
D.松动度
E.牙周袋探诊
参考答案:C
You can put the vegetables into the fridge to _______ them fresh. [ ]
A. let
B. save
C. stay
D. keep
特发性血小板减少性紫癜血小板破坏的主要场所是()
A.骨髓
B.肝脏
C.血管内
D.脾脏
E.外周血