4÷7的商是一个请选择DCBA7u1A(g8X:d-A-J-x){/O小数/b9\0~9x;\8@*o'B:u*W
A.纯循环小数/b9\0~9x;\8@*o'B:u*W
B.混循环小数/b9\0~9x;\8@*o'B:u*W
C.有限小数/b9\0~9x;\8@*o'B:u*W
D.不循环小数/b9\0~9x;\8@*o'B:u*W