a的相反数是[ ] A.﹣a B.a C.|a| D.不能确定 发布时间:2017-04-05 11:46 │ 来源:www.tikuol.com 题型:选择题 问题: a的相反数是[ ]A.﹣aB.aC.|a|D.不能确定
题型:选择题 She was so sad because she failed in the maths test. Let's ____ her ____. [ ]A. leave; behind B. leave; alone C. leave; aside D. leave; out 查看答案