下列说法正确的是(    ) A. 与是同类项               B.

下列说法正确的是(   

A. 是同类项               B.2是同类项

C. 32是同类项            D.52是同类项

答案

解析:对于A,前面的单项式含有,后面的单项式不含有,所以不是同类项;

对于B不是整式,2是整式,所以不是同类项;

对于C,两个单项式,所含字母相同,但相同字母的指数不相同,所以不是同类项;

对于D,两个单项式,所含字母相同,相同字母的指数也相同,所以是同类项.故选D.

 

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