患者,男婴,25天,出生后几天即发现下颌萌出一颗牙齿。 最准确的诊断是()
A.诞生牙
B.新生牙
C.乳牙结构异常
D.乳牙异位萌出
E.畸形牙
参考答案:B
He often buys things in our shop. He is a customer to our shop. [ ]
A. usual
B. ordinary
C. regular
D. common
平衡状态。