高中数学理科

赞美土豆的作文 如图△ABC是等腰直角三角形,AB=AC,D是斜边BC的中点,E,F分别是AB、AC边上的点,且DE⊥DF,若BE=8,△DEF的面积是25,求CF的长度. 当m为何值时,代数式2m-1/3的值比代数式m-3/2的值大1?[方程][详细一点] 已知（x/2－1/x开三次方）^n的只有第五项的二项式系数最大.求展开式中的常数项.求展开式各项系数的和 对商鞅变法的认识和想法 请问一吨太阳牌300克以及250克白卡纸,能有多少大张啊!现在市场的价格大概多少钱一吨啊! 请教白卡纸厚度 1000页 如图,正方形ABCD的边长为4,点P为CD上任意一点（不与点C,D重合）.设DP=X,四边形ABCD的面积为Y. 已知,如图8,如图所示,正方形ABCD的边长为1,G为CD边上的一个动点（点G与C、D不重合）,以CG为一边向正方形 要用35张白卡纸做包装盒,每张白卡纸可以做盒身2个,或者做盒底盖3个,如果1个盒身和2个盒底盖可以做成一个包装盒,那么能否把这些白卡纸分成两部分,一部分做盒身,一部分做盒盖,使做成的盒 如图,正方形ABCD的边长为4,点P位CD上任意一点（不与点C,D重合）.设DP=X,四边形ABCP的面积为Y1:求y关于X的函数解析式及x的取值范围2：画出这个函数的图像 英语翻译 怎样评价商鞅变法 柳树抽出了枝条.扩句 柳树抽出了枝条.（扩写）要优美,最好用上拟人、比喻. 将六伏三瓦的灯泡l1和六伏二瓦的灯泡l2串联后接入电源电压为六伏的电路中设电阻丝不变求lv的实际电功率为多少瓦并联后接入电源电压为六伏的电路中电路的总功率为多少瓦 天才来帮我,蠢材别来请把下面的词语连起来 U．K 香港 P．R．C 联合国 U．N 中国 H．K 英国 答对有赏!＾-＾ 46毫米乘35毫米乘42毫米是多少厘米? New York is ( ) in the United StatesA.larger than any cities B larger than any other city C bigger than any cities D biggest of all the cities 答案是B,但我觉得B不对啊 难道B不应该改为larger than any other cities么 你真是个蠢材用英语怎么说 蠢材英语怎么说 英语蠢材有求于各位英语高手,1.would like表示意愿,意为 .在意义上同 相等.但语气比 委婉,客气很多.人称和数的变化.I would like= ; they woud like= ,he would like= ; she would like= .(1)肯定句：I’d like some F For many cities in the world,there is no room to spread our further ,___New York is an example.A for whichB in which C of which D from which [W93] For many cities in the world,there is no room to spread out further,____ NewYork is an example.A.for which B.in which C.of which D.from which请翻译,并分析. 选择题For many cities in the word,there is no room to spread out further, ____New York is an examplA.for which B.in which C.of which D.from which答案说选C..of which ..说of是所属范畴.of which不是=who吗? For many cities in the world,there is no room to spread out farther,_____New York is an example.A.for which B.in which C.of which D.from which For many cities in the world,there is no room to spread our further,_______ New York is an example.\x05 A.for which \x05\x05B.in which \x05\x05C.of which D.from which答案是哪个,请对各项选择解释清楚些 西施效颦在现实生活中有没有例子 或者和下面几句话类似的生活中的例子　　不要盲目地去仿照,只会弄的适得其反.　　讽刺了那些不知自丑,不识时务的人,只知道盲目效仿,结果却适得其反, spread your 我知道网上能查到,可那个是错的,朗文第7版；说是体验新生活,尝试新事物.求权威性... Spread Your Wings和远くへ～Spread Your Wings～有什么不同?都是MAY'S的. spread your wings and prepare to fly abaud onedly iuto the 解释句子(Why not spread your wings and visit France)是用英语解释..