数的运算初期阶段(相当于5岁以上)。这个阶段的特点不包括
A.对10以内的数大多数能保持守恒
B.计数能力发展较快
C.中期能认识第几、前后顺序
D.序数概念、基数概念和运算能力等都有不同程度扩大和加深
正确答案是C
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