挑战习题
1/5单选题
难度:

1.下列选项不是同类项的是()
A -1和0
B -4xy2z和-4x2yz2
C -x2y和2yx2
D -a3和4a3
提示1:
6ICD5a+f5ZCM57G76aG555qE5qaC5b+1
正确答案:Qg==
5omA5ZCr5a2X5q+N55u45ZCM77yM5bm25LiU55u45ZCM5a2X5q+N55qE5oyH5pWw5Lmf55u45ZCM55qE6aG55Y+r5ZCM57G76aG544CC5bi45pWw6aG55Lmf5piv5ZCM57G76aG5LkLpobnkuK08aW1nIHdpZHRoPTMxIGhlaWdodD0yMSBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwLzczLzJFL3JCQUNFMVRJdExMU2hHMzhBQUFCbFhVd2tMNDY0My5wbmciPueahOaMh+aVsOWdh+S4jeebuOWQjA==