牙列缺失后,软组织将出现改变,以下哪项是不易发生的()。
A.唇颊沟变深
B.舌沟间隙变浅
C.鼻唇沟变深
D.舌形态改变
E.磨牙后垫位移
参考答案:E
Mr Black be at home because she called me from England just now.
A.mustn't
B.isn't able to
C.can't
D.may not
数据结构分为线性结构和非线性结构,带链的队列属于______。