下图为“大陆和海洋气温年较差、日较差的纬度分布图”。读图回答下列小题。图中反映大陆气 发布时间:2019-03-19 12:33 │ 来源:www.tikuol.com 题型:单项选择题 案例分析题 问题: 下图为“大陆和海洋气温年较差、日较差的纬度分布图”。读图回答下列小题。图中反映大陆气温年较差和海洋气温日较差的曲线分别是()A.甲和乙B.乙和丙C.丙和丁D.甲和丁
题型:单项选择题 案例分析题 David can't go to take part in the sports meeting, because he'll ________ take care of his mother who is ill. [ ]A. must B. has to C. have to D. needs to 查看答案