矢量的方向

a picture a photo change is in the air,and the study of economics offers no exception. It is thought _of seasonal variation is the change in the wind patterns of the Northern Hemisphere.(A) what the principal cause (B) of the principal cause (C) that the principal cause (D) the principal cause is答案及解析,请问这是什么从句 Absolute sensitivity is the ratio of the change of the output signal to the change of the measurand如何翻译啊 What is the mean of "in the mood for"? （对画线部分提问）She has a little doll.（a little doll画线）What______she______?I have a small cat。（ small cat画线）What______you_______? 对画线部分提问这个怎么做 就画线部分提问, 对画线部分提问! 对画线部分提问.谢谢了 农业塑料制品有哪些?并说上用途 A photo of you two They are swimming.改为否定句 哥哥姐姐们 ______________________________________________________五．\x09阅读理解阅读理解1foreign外国的 doctor医生language语言 taxi出租车college学院 company公司professor教授 they are coming _____ us tomorrow A help B helps C to help D will help 要解析are coming不是现在进行是吗为什么后面还有tomorrow betty and her mother are arriving.oh,really?i _____ they were coming tomorrow.A.think B.have thought C.will think D.thought正确答案是什么,解析. enjoy后面用原形还是正在进行时还是第三人称单数?还有cut,set的正在进行时是什么? enjoy的第三人称单数形式大神们帮帮忙谁知道厄 l will play football tomorrow变成一般疑问句,肯定否定回答,否定句 love to do sth和love doing sth有什么区别 我想给自己起个英文名字!懂英文的高手进!我叫黄子洋.男的`水瓶座` 各位高手帮起个又酷又醒目的英文名```! 老师那和蔼可亲的笑脸和谆谆教诲总是浮现在我眼前.病句 老师那和蔼可亲的笑脸和谆谆教诲总是浮现在我眼前改病句 写出下列动词的第三人称单数形式和-ing的分词：系动词be,carry I left carrying it怎么翻译?carry为什么加ing 说一口地道美国英语!口腔,腹腔,鼻腔==》》三腔共振能说出一口流利的英语.但是我感觉我的腹腔用的不是很好,怎么练习呢?会说一口流利地道美语的回答! 聪明人和傻子和奴才主人为什么慢慢才出来鲁迅作品、 stay的第三人称单数教教我啊 儿童学英语真的有用吗? Stay第三人称单数是什么 儿童学英语他重要吗?