釉质发育不全
A．牙齿发育异常
B．牙齿形态异常
C．牙齿结构异常
D．牙齿萌出异常
E．牙齿排列异常
参考答案：C
The comments which he made ______ marketing bothered his boss greatly.
A．being concerned
B．concerned
C．be concerned
D．concerning
在侦查实践中，痕迹、物证情报主要来源于（）
A.现场情报源
B.人员情报源
C.档案情报源
D.口头情报源
