计算(-a+b)2的结果是 [ ] A.ab2 B.-a2+b2 C.a2-2a 发布时间:2017-05-15 23:32 │ 来源:www.tikuol.com 题型:选择题 问题: 计算(-a+b)2的结果是 [ ]A.ab2 B.-a2+b2 C.a2-2ab+b2 D.a2+2ab+b2
题型:选择题 -I’ll come to see you this afternoon. Shall I bring something to read?--OK, _________.A.you are welcomeB.by no meansC.take your timeD.so much the better 查看答案