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如何用MATLAB生成一个5阶魔方矩阵 2012年完成目标的理由和动机（至少十条） 电蚊拍里的升压板是利用什么原理开升压的 Will you be travelling back for Spring Festival? Most students went home for the Spring Festival ,but there will still ___ in schoolA few B little C a little D a few what`s the improper response of 'will you be going back hone for the Spring Festivel?'（你春节回家吗?）回答不恰当的是：A、sure B\certainly C、of course 已知点P是以F1,F2为左右焦点的双曲线x^2/a^2-y^2/b^2=1(a>0,b>0）左支上一点,且满足向量PF1*向量PF2=0,tan角PF2F1=2/3,则此双曲线的离心率为（） 答案：根号13 部队奉命乘车前往某地执行任务,车队每小时行30千米,出发后,指挥部派通讯员骑摩托车沿同一路线给已经出发的部队送上级命令,摩托车每小时行57千米,经过2小时,在上午11点追上部队,部队是 如图,A是以MN为直径的⊙O上的一点,B是弧AN的中点,B为AN弧的中点,P是直径MN上一动点,PA+PB的最小值为 Most shops ______ during the Spring Festival because the shop assistants often go home...（ ）Most shops ____________ during the Spring Festival because the shop assistants often go home for a family reunion.A.aren't open B.don't open C.aren't open s_______ of the worker went home for their spring festival 冰心（）代（）家、（）家、诗人.代表作 寄小读者,诗集 繁星 春水 散文集（） “传以示美人及左右”｛廉颇蔺相如列传｝中的“美人”和“左右”的古今义 古今异义题 She sings the loudiest of the three.(为什么是loudiest,它是形容词,副词修饰动词) 科学家干吗给动物照镜子?哪些动物可以认出自己?为什么 用诗句或名言警句填空：（ ） 一个城市要发展,必须吸取各种各样的人才 无论为别人做了多少,也不要炫耀（ the second problem is My parents are scrice with me这句话有错吗 She is the story that she什么歌里有这句歌词She is the story that she,是一首英文歌来的,很轻快. 一辆小汽车(可视为质点)在直线公路上做匀速运动,10s行驶80m,该汽车运动的速度是（）m/s,途中经过一座大桥,从桥头驶到桥尾共用5min,这座桥长（）m [[[[[一道对数函数求值域]]]]]]已知2[log1/2（x）]^2-log2(x)+3小于等于0,求函数f(x)=[log2(x/4)][log4(x^2/4)]的值域. 各种动物照镜子会怎么反应? That is a ( )of my family 冰心小诗集有哪些 My sister is tall and slim. 对tall and slim提问速度 如图,MN是半径为1的⊙O的直径,点A在⊙O上,∠AMN=30°,B为AN弧的中点,点P是直径MN上一个动点,则PA+PB 对数函数的值域对数函数loga(9-6a).中a的范围是1 through是啥意思 请问,through在这里是什么意思The world may change my whole life through through 什么意思 through是什么意思 through The department,through its cooperative state research,education,and extension service,has been supporting a project in Michigan .That state has a short growing season.