下列计算正确的是 [ ] A.2x+3y=5xy B.3x2﹣x2=3 C.15 发布时间:2017-05-22 08:26 │ 来源:www.tikuol.com 题型:选择题 问题: 下列计算正确的是 [ ]A.2x+3y=5xyB.3x2﹣x2=3C.15ab﹣15ab=0D.9x3﹣8x2=x
题型:选择题 The bridge was completely __________after it rained for 14 days and people had to cross the riverby boat. [ ]A. damaged B. harmed C. destroyed D. injured 查看答案