造成临床牙齿松动的原因如下，除外（）
A.创伤
B.牙槽嵴吸收
C.牙周膜的急性炎症
D.女性激素水平变化
E.牙髓炎症
参考答案：E
Looking at my mother's ___________ face, I regretted not having told her my whereabouts on the phone.
A．worrying
B．worried
C．anxioused
D．satisfied
锤子(锤头用钢铁制成，锤柄由木料制成) ( )
