以下判断正确的是( ) A.5a是单项式 B.单项式xy没有系数 C.23x2是五次单 发布时间:2017-05-23 20:04 │ 来源:www.tikuol.com 题型:选择题 问题: 以下判断正确的是( )A.5a是单项式B.单项式xy没有系数C.23x2是五次单项式D.7是单项式
题型:选择题 Tom ____ two of his classmates ____ invited to the party. [ ]A. as well as; was B. as good as; were C. and; haveD. as well; has been 查看答案