北极圈上极昼极夜时间

we need____the way we speak when talking to different peoplechange,怎么辨别是need do sth 还是need to do sth we don't doubt that he can do a good job.当__ __ __ __ __he can do a good job.该填哪五个词 在这题中：I'm sure you will do a __than we because you do things __. A very good job, more carefull 中国国歌的由来简述 关于中国国歌的来历geming 我国的国歌是怎样诞生的? matlab中为什么这条语句： y=1./(1+25*x.^2) 中必须要加点（即英文状态下的句号）?matlab中用三次多项式拟合这个方程：y=1/(1+25*x^2),代码如下：x=-1:0.01:1 y=1./(1+25*x.^2) p1=polyfit(x,y,3) y1 We should help people when they are( )danger A.on B.in C.with D.of People must be encouraged in their efforts and they should pride themselves on saving 国旗,国歌是怎么形成的苏轼越多越好 spend与cost take 的区别~我记得貌似是spend＋时间 take ＋钱数 貌似记错了、 spend与cost、take 的区别是什么呢?一个句子 It _____him 250 yuan是填哪一个呢? 国旗和国歌是怎样产生的? cost take spend 等词的区别 take spend cost 英文句号后是应该空一格还是空两格? 请问英文句号后是应该空一格还是空两格? The people are waiting _____ the bus,and they ate standing_____ line. People___(stand)in line.They___(hurry) home. 当“花费金钱”讲时,cost 和take 的用法区别我知道take 的用法一般是it作形式主语,后面跟不定式.cost一般指sth cost sb some money.还有其他区别吗? spend,pay,cost,take当花费讲时,他们的结构? 我国国歌的由来 国歌的由来 国歌的由来简介 一个英语句子怎么判断成分完整 物体光亮而透明,是什么词语 光亮而透明,找出相应的词语 词语；黝黑发亮什么?意思 In Russia people should when they meet for the first time 根据意思写词语：（ ）光亮而透明 ( )形容刮风下雨 （ ）喧闹沸腾 People in different countries have different customs when they meet for the first time.麻烦帮忙写一篇初三水平的文章,我们这个单元学的是You're supposed to shake hands.不是要翻译，是要写作文 英语选择主题句可以不到句号吗我的意思是,不是从句号到句号,而是从句号到逗号或从逗号到句号也可以吗 He usually cooks nice food ()I and my mother.是填for 还是to顺便教下他们的区别