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请人帮忙做套大一英语试题1.Usually,_______ care for children's ______...A.woman writers...lives B.women writer...life ..C.women writers ...life D.women writer ...lives .2.________ you are free,why not go skating with us?...A.Because B.Sinc 求一份大一期末英语试卷 大学英语试题（大一期末） 大一上期末英语试题 圣诞节快乐,有没有人帮我做一下英语试卷 大一的!八点半开考 有没有电子书版 = =||为什么点不开？还有必修4的。 新课改的,人教B版我中考完在家没事想预习预习高一知识，但不知道高一数学（人教B版）物理（人教）上半学期除了学必修1还学必修几？1我都学过了……急！ f（x）=2x-1,g(x)=1/x²+1.求f(x²),f(g(x)).怎么得出：f(x²)=2x²+1,f(g(x))=2g(x)-1.为什么可以这样计算? 急.y=根号（x²+2x-3)的定义域x²+2x-3＞或＝0,怎么求出：x＜或＝-3,或,x＞或=1的、 设函数f(x)=sin(2x+φ)(-π 设函数f(x)=sin(2x+φ)(0 已知函数F(X)=AX2+BX+C,若F(0)=0,F(X+1)=F(X)+X+1.求F(X)的表达式.AX2就是X的二次方. -∝＜x＜+∝的意思是不是x取全体实数?应该是这个意思,但是想确认一下下 1、He__toNew York tow hours ago.A、flied B、flies C、flew2、She had much fun__on the playground.A、plays B、played C、playing3、Jim decided__to theMount Wutai last month.A、go B、to go C、going4、—__was your vacation?—It was fantasti 设函数f(x)=sin（2x+μ）(-π 普通高中课程标准实验教科书】必修2如果有答案书的请把85页AB组,97页AB组答案发一下, 平面∝平行平面β平行平面r,直线a与b分别交∝、β、r于点A,B,C和点D,E,F求证：AB：BC=DE:EF 图画不出来. 求x+2x^2+3X^3+……+nx^n的值（x>0且x不等于1）如题 解方程组x+y+z=6,2x+3y-z=5,3x-y+2x=7打错了，试x+y+z=6，2x+3y-z=5，3x-y+2z=7 L-----start at half past one in the afternoon.Do you u------- how to send emails? 连词成句1.any are books there the in schoolbag2.rulers his are green这两题要连词成句,我们家长都不懂,请大家帮忙然后回答下为什么要这么连 Mr.Li was born in ______,he is _______.(Asia)The_______between Beijing and Tokyo is 2300 kilometers.(distant) 根据中文补全下列句子：我经常帮妈妈打扫房间.I often _________ Mother __________ the room.这块蛋糕比那块好多了.This cake is _________ _________ than that one. After_(come) to China,I found that my family was like a big tree.I realize that I am _ (culture) and ancestrally _(root) in China. 若三次根号x-1与三次根号2-3x互为相反数,则X=? 【高一数学】不等式.详解~~大虾们,求助~~~这是一个填空题...但是我需要很详细很清晰的步骤,那个就是书的答案,但是我看不懂是怎么来的.能详细一点么?...感谢了! 已知集合A={x|x的平方-4mx+2m+6=0,x属于R},B={x|x小于0,x属于R｝,若A与B的交集不是空集,求实数m的取值范围.注：题中部分数学符号用语言描述的,因为没有找到匹配的符号,见谅. 3x/0.5-(7*0.2-x)/0.4=1急用! 9X+0.4【2.5(3X-4)+10】=6/7【14(X+1)-28】 0.5(x-4)-(3x+4)=-7.5 若函数f（x）=mx+n有一个零点是2,则函数g（x）=nx²－mx的零点是 解三元一次方程组 X+2Y+3Z=1 X=Y+1 2X+3Y+5Z=2