决定固定义齿修复中基牙数目的因素中错误的是()。
A.基牙的牙周膜面积
B.咬合力大小
C.基牙牙槽骨情况
D.缺隙区的长度
E.牙槽嵴的丰满程度
参考答案:E
下列物质不能使酸性KMnO4溶液褪色的是( )
A.CH4
B.CH2=CH2
C.SO2
D.HI
Was it she who suggested _______ the meeting off? [ ]
A. us to put
B. to put
C. to us to put
D. to us putting