下列哪项不是前牙具备的功能()
A.发音
B.美观
C.切割食物
D.捣碎食物
E.以上都是
参考答案:D
提示心律失常严重的临床表现是()
A.心悸
B.乏力
C.头晕
D.恶心、呕吐
E.阿-斯综合征
This special school accepts all disabled students, __ educational level and background.
A.according to
B.regardless of
C.in addition to
D.in terms of