二期梅毒复发症状

john f__ his teacher into the classroom and sat down in his seat.空处填F开头的单词 a1=2,数列an中第n+1项=3an+Xn-1,X为常数,切an+n为等比数列 求X打错字 且an+n为等比数列 并求an的前N项和Sn Helen sat down on the seat quietly just now(改一般疑问句,并做否定回答) 已知抛物线,过定点作两条互相垂直的直线,与抛物线交于两点,与抛物线交于两点,设的斜率为．若某同学已正确求得弦的中垂线在y轴上的截距为2p/k + p/k^3,则弦MN的中垂线在y轴上的截距为?． -Nancy sat in the front seat on the left side of the room.-Oh?I thought she ____ in the back.A sat B had sat C is sitting D has sitting .若x、y满足约束条件 x - y +1≥0x + y -3≤0x + 3y -3≥0 ,则z =3x - y的最小值为———— 设 x,y满足约束条件1.x-y≥ -1 2.x+y≤3 3.x≥0 4.y≥0 则z=x-2y 跟这个题做法一样吗 被减数、减数与差的和是9 差是三分之七 差是被减数的百分之几 图上这个男的是谁 是伊恩萨默海尔德(Ian Joseph Somerhalder)吗 ian somerhalder怎么读 Ian Somerhalder的猫是谁的 They arrived at a farmhouse,in front of ______sat a small boy.标答是填which,为什么不能填that呢? They arrived at a farmhouse and in front of _____ sat a small boyA which B it C that 如果是They arrived at a farmhouse,in front of _____ sat a small boy选什么,有什么区别,稍微讲一下非限制性定语从句用法上与限制性定语从 Love a person,it is necessary to make love . =IF(J20 十三岁,我又多了一分快乐 十三岁,我多了一分XX不少于600字 13岁,我多了一份__作文,横线地方填词语不是光填词语,还要给篇作文.汗 为啥把Df叫做定义域,Rf叫做值域 f：R→Y ,对每一个x∈R,f(x)=x^2.显然,f是一个映射.f的定义域Df=R,值域Rf={y|y≥0}然而满射的概念是：f是从集合x到集合y的映射,若Rf=Y,即Y中任一元素y都是X元素的像.即f为X到Y 上的满射. 个人认为上 函数中的Df Rf 是什么意思 different from different with the same adifferent fromdifferent withthe same asthe same from有什么区别! 手表后面的ST STEEL U.S.A 是手表型号还是什么意思.可以知道是什么牌子吗? 什么是S/Steel? I noticed a small group of boys picking on a smaller,skinnier boy .的翻译. 在平面内,两条直线可以有一个交点,三条直线最多有三个交点.依此类推,15条直线最多可以有多少个交点 ( )工作,在括号里填上有察字的词语要有"察"字的 同一平面内若干条直线最多形成210个交点,则共有多少条直线? why Joseph Stalin important during the Russian Revolution JOSEPH --TO EVENING CLASS SINCE LAST MONTH,BUT HE STILL CAN'T SAY'WHAT"WHAT'S YOUR NAME?"IN RUSSIAN.A.HAS BEN GOING B.WENT C.GOES D.HAS GONE Joseph __to evening classes since last month,but he still can't say What's your name?" in Russian.Joseph _____ to evening classes since last month,but he still can't say "What's your name?" in Russian.[ ]A.has been goingB.went C.goesD.has gone 为什 100分求信息检索综合作业一份-急!作业要求见下课题选择只要是理工类的就行.其他要求见上面的文档.Q：407937705————————采纳答案时补上另外50分.- 有没有现在在川大学校里的人?江 what animal is it?Do cherry and Josephwhat animal is it?Do cherry and Joseph like koala bears?where are they From?怎么回答