两条直线相交,形成4个角,其中一个角是直角,这两条直线是______的关系. 发布时间:2017-06-20 16:42 │ 来源:www.tikuol.com 题型:填空题 问题: 两条直线相交,形成4个角,其中一个角是直角,这两条直线是______的关系.
题型:填空题 There was _____ woman in the room, sitting and looking at me in the dark.A.a 80-year-oldB.an 80-year-oldC.a 80-years-oldD.an 80-years-old 查看答案