Aa8的精选

问题详情：Heis      boy,butheknows      . A.a8-years-old;alotof   B.an8-year-old;alot C.an8-years-old;alot    D.a8-years-old;alotof【回答】B知识点：构词法题型：选择题...

问题详情：计算a3·(a3)2的结果是   ()A.a8               B.a9               C.a11               D.a18【回答】B知识点：整式的乘法题型：选择题...