事件通讯在结构上可以纵向来写,也可以横向来写。( )
参考答案:错
患者男性,48岁,左下后牙食嵌就诊,面深髓,已穿髓,探(-),叩痛(-),X线片见根尖X线透射区边界规则,边界骨质密度无明显增加。
根据病史及检查,诊断可能是()。
A.慢性牙髓炎
B.慢性牙槽脓肿
C.根尖囊肿
D.根尖肉芽肿
E.慢性牙周炎
The twins _____ TV at ten last night. [ ]
A. was watching
B. were watching
C. watched
D. were watch