上颌尖牙具有（）
A．远中牙尖嵴
B．斜嵴
C．近中边缘嵴
D．横嵴
E．颈嵴
参考答案：A
解析：
上颌尖牙具有远中牙尖嵴。
Compared with his sister,Jerry is even more to,and more easily troubled by,emotional
and relationship problems. [ ]
A.skeptical
B.addicted
C.available
D.sensitive
