已知向量a=2，向量b=1，向量a和b的夹角为60度

英语 反义疑问句The most important reason for the man to cut down the tree isn't that the man couldn't get any pears from it,is it?这个句子是前否后肯,如果回答：是的,它是.应该怎么回答.我觉得是： No,it is. 而答 英语反义疑问句及其回答关键回答怎么理解 环保手抄报文章 关于环保的文章,手抄报上用不需要长篇大论,只需500字左右就够了, 关于环保的手抄报,文章该写点什么 一个长方体铁皮,长30cm,宽25cm,从四个角上各切掉一个边长为5cm的正方形,然后做成盒子.这个盒子的容积是一个长方体铁皮,长30cm,宽25cm,从四个角上各切掉一个边长为5cm的正方形,然后做成盒子。 英语四级 15选1015选10 可以同时全选同一个选项吗.例如全部选F 英语单词,用中文发音相似的字代替麻烦大家帮我想些比较常用的.比如hello——哈佬goodbye——骨拜 中文发音“靠丑”是那个英文单词?按中文读的“靠丑”是那个单词?想了好久想不出,好熟, 我在找一个单词,中文发音是“忘秋”,谁能告诉我这个英文单词怎么写我在找一首歌，男的唱的，听得也不是很清楚，高潮部分是这样的：baby i want youbaby baby。就这样一首，找了好久都找不 问问各位朋友：英语四级快速阅读占的比重大,还是选词填空（15选10）比重大? 大学四级英语考试中,选词填空（15选10）和两篇阅读,总分各为多少? 九年级英语反义疑问句解答技巧 英语反义疑问句题目,1、Dick hasn’t got much money about him,__________ ___________?2、There is something wrong with it,______ ______? 英语翻译At least three explosions rocked Tripoli late Tuesday night; it was not immediately clear what they hit这个句子里面的rocked是震动的意思,在这里怎么翻译啊,it was not immediately clear what they hit怎么理解啊,是他 跪求 英文翻译...一定采纳..在下面To investigate the neural processes of decision-makings between attractive females and money, we recorded 18 male participants' brain event-related potentials (ERPs) when they performed a novel task of dec 英语反义疑问句1.Don't you think English is very important_______ .Working hard at English can lead to success2.Mike didn't go to work yesterday ,did he?_______ ,though he was badly ill3.I don't think you can jump that high_______ But ten years 求英语反义疑问句 请大声地用英语说,不要害怕犯错误.快 我害怕犯错误...英语怎么说?1.我害怕犯错误.../我害怕说外语.英语怎么说? 英语翻译,CNN新闻片段,急,我会尽快采纳South African leader to visit Gadhafi, push for cease-fire and talks这里的visit是什么意思啊,我的理解不好啊,visit不是参观的意思吗,talks呢,请高手帮助理解,最好帮助我 英语翻译The United States has resumed airstrikes in Yemen and believes it killed a top al Qaeda insurgent there,a U.S.military official said on Thursday.这里的U.S是美国还是英国啊,resumed 是重新空袭的意思吗,top al Qaeda insurge 英语翻译The general said the virginity checks were done so that the women wouldn't later claim they had been raped by Egyptian authorities这句话是什么意思,so that是不是以至于的意思,是不是说那位将军说贞洁检测确实做 英语翻译The chairman of the National Transitional Council,Mustafa Abdul Jalil,said he has offered amnesty to Gadhafi loyalists who defect before the demise of the regime,but reiterated that there will be "no negotiation for any solution until Gad 英语翻译If I were young again,I would from a habit of concentrationI would let nothing come between me and the subject in hand.i would use every possible means to improve my memory. 几个英语翻译,谢谢我陪你走过低谷,也和你一起经历过荣誉.至于我为什么喜欢你,我想大概是你改变了我,也改变了我的生活.曾经我是一个非常颓废的人,但自从喜欢上了你,你的积极,努力,让我 怎么以最快的速度熟背英语课文? CNN英语翻译,外语学习,期望高手帮助指点一下,万分感激,谢谢,希望能够指点一下,我最快的速度采纳Russian President Dmitry Medvedev has joined American and other European leaders in calling for Moammar Gadhafi to step d 英语翻译Earlier in the day,NATO targeted a military base and Gadhafi's compound,state television reported.A spokesman for the Libyan government said that at least 31 people were killed,including a number of civilians,and dozens more were wounded 几个英语翻译 急isn't ready to stop for the wintera top summertime escapefor four daysyou can always shop in the city of Hamilton's upscale small goods and arts and crafts shops.谢谢了! 求用英语翻译一句话（许多人都养成了乱扔垃圾的坏习惯）据我观察可分为两类,一类扔的很熟练,另一类则更熟练.括号内为前提,希望能够口语化. 英语翻译我没有做任何对不起他的事情.朋友们，我要最确切的翻译。