1岁半小儿，乳牙数（颗）应是（）
A.8～10
B.10～12
C.12～14
D.14～16
E.16～18
参考答案：C
--- I think he is taking an active part in social work.
--- I agree with you _________.
A．in a way
B．on the way
C．by the way
D．in the way
装车后货物总重心的投影在车地板上位置有何规定？
