下面计算正确的算式有( )个①3x3•(-2x2)=-6x5,②3a2•4a2= 发布时间:2017-05-24 14:51 │ 来源:www.tikuol.com 题型:选择题 问题: 下面计算正确的算式有( )个①3x3•(-2x2)=-6x5,②3a2•4a2=12a2,③3b3•8b3=24b9,④-3x•2xy=6x2y.A.0B.1C.2D.3
题型:选择题 This is the first time I __________ to the capital to attend the celebration ceremony.A.cameB.comeC.have comeD.had come 查看答案