()34× 1()__________1()7()1()()__________2()12

()34× 1()__________1()7()1()()__________2()12 英语翻译1、能够__________2、老板__________3、要求__________4、蛋糕__________5、喜欢__________6、想__________7、鸡蛋__________8、香蕉__________9、橙子__________10、苹果__________11、黑板__________12、肉__________1 1乘3分之一加3乘5分之1加5乘7分之1.具体的看补充.简便算法1 1 1 1------ + ------ + ------ + .+ ----------------=__________1×3 3×5 5×7 2011×2013麻烦讲清楚一点! -sgn(1-x)=__________1,x>0 -1,x>0 2,x>0sgn(x) = 0,x=0 ,-sgn(x) = 0,x=0 ,-sgn(1-x) = 1,x=0-1,x 【高一数学集合部分】“xy＞0”的一个充要条件是__________1.“xy＞0”的一个充要条件是__________2.集合A={x|-20是x2+y2>0的 ____ 条件6.集合A=｛x|-2＜x≤1｝,U=｛x|x≤3｝,则CuA=_______7.x属于A交B______x属 水浒传中( )故事讲了:__________ 英雄名字:__________ 特点:__________1个就行啊~ (9-X)(-x-9)=__________1道填空题.等于白送! (x-y)(x+y)(xˇ2+yˇ2)=__________1道填空题.等于白送 选一种试剂除去杂质CaCO3粉末(Na2CO3)________KCl溶液(K2CO3)__________1.烧碱溶液 2.硫酸钠溶液 3.盐酸 4.水 已知a为方程x^-x-2009=0的一个正根,求代数式的值5+ 2009_____________1+2009__________1+2009__________1+2009_______a麻烦回答的时候也用这种格式不然看不懂5+ 2 0 0 9_________1+ 2009_____1+2009____1+2009____a our hometown has changed a lot in the last few years,so has theiour hometown has changed a lot in the last few years.__________1.so has theirs2.so theirs has.两个好像都可以啊? 英语翻译a.keep in touch __________b.in case __________c.look forward to __________d.get ...into trouble __________e.a number of __________1.We __________ the return of spring.2.The bookshop is very popular and __________ people go to buy books th 1.It was essential that the application forms __________1.It was essential that theapplication forms ____________back before the deadline.A.must besent B.would comeC.be sent D.were sent选B,但为什么不选C?2.If you _____that night,you mighthave b 如图:一只蜘蛛要从正方体的一个顶点A爬到相距它最远的顶点B.班级:_______________ 姓名:__________1.下列几何体的截面不可能是圆的是 （ ）A、圆柱 B、棱柱 C、圆锥 D、 球2.你看这位“ 表面能展 1.Please put these knifes in the bag,( 找出错误的地方,并改正） a b c d __________1.out,and,have,let's blow,cakes,some,candles,the.(连词成句）2.away,quickly,must,from,danger,the,we,stay.(连词成句）3.got,I,new,caloulator,have,a,my, 英语--速度21.201.填空It's________(9:24)now.Ann received a lot of presents on her_______(11)birthday.I have to go home on__________.(10:30)2.用英语表达时间10:05__________8:30___________12:10__________1:15___________5:47___________9:23____ 1.如果b分之a=2分之5,则Aa-b分之a+b=__________1.若点P是线段AB的黄金分割点,则较短线段PA与较长线段PB之比等于__________3.在△ABC中,点D,E分别在边AB,AC上,DE//BC,则BA分之BD=________4.在△ABC中,点D,E分别在 34+222222+1