根据小儿运动功能的发育，正常小儿开始会爬的年龄是（）
A.3～4个月
B.5～6个月
C.8～9个月
D.10～11个月
E.11～12个月
参考答案：C
There are a number of cases _______ family members or friends quarrel with each other and become enemies.
A．that
B．which
C．where
D．when
下列不属于中华传统文化的是[ ]
A．
B．
C．
D．
