1.what's the main idea 2.what's "blue planet" in my scrap(文章)...
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【in】 【but】 【to】 【of】 【as】 希望帮到你,祝学业进步! 若有疑问及时追问,满意敬请采纳,O(∩_∩)O谢谢~~...
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Mobile phones have been an important communication tool in our modern life.Thanks to it,our life more convenient and colourful.So it is my big dream to own a cellphone,especially which can play music,download some useful...
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We had a happy spring festival. That morning we got up very early . First I made the bed and then cleaned all the rooms in our house. My mother is busy cleaning some clothes. After that my father took......
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公事之类的用： Business trip to Russia 一般的旅行用 Travel to Russia 问题补充：演出 那就直接用Travel to Russia...
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我的衣服(My clothes) Hi,my name is Hu Haiyue.I am in Class 1 Grade 4 .I have many clothes.I have a blue shirt and blue trousers.I have many colorful clothes too.I like my yellow sweater with white ski......
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Solution:The nomal vector of plane L₁x y - z = 3 is (1,1,-1)The nomal vector of plane L₂4x y - z = 3 is (4,1,-1)Therefore,the directional vector N of the intersection of L₁and L&......
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