读下图,回答题。河流ab段的流向为() A.自西北向东南 B.自东南向西北 C.自东 发布时间:2019-01-19 05:52 │ 来源:www.tikuol.com 题型:单项选择题 案例分析题 问题: 读下图,回答题。河流ab段的流向为()A.自西北向东南B.自东南向西北C.自东北向西南D.自西南向东北
题型:单项选择题 案例分析题 _____ work has been done to prevent the river being polluted. A .A number of B A mass of C Several D. A good many 查看答案