密度是()与其体积之比。A、物质重量 B、所含物质的多少 C、物质质量 D、以上均不正确 发布时间:2019-01-31 01:34 │ 来源:www.tikuol.com 题型:单项选择题 问题: 密度是()与其体积之比。A、物质重量B、所含物质的多少C、物质质量D、以上均不正确
题型:单项选择题 — I had to take a taxi home yesterday because my car broke down.— You ____. I was not using it.[ ]A. could have borrowed mine. B. couldn't have borrowed mine. C. must have borrowed mine D. shouldn't have borrowed mine 查看答案