水的英语作文

初一语文上册22课的表达方式有哪些? Li Yuchun is a po__ singer.My friends and i all like listening to her song. 人与人之间运用的主要表达方式是什么 初一语文创新上的 miss qian has a s-------- voice,and many of us like listening to her songs. Song Zuying is famous ____ a singer A for B of C to D as 应该是求两道简便运算还要附带解答。 一道代数式化简3x^2-[7x^2-2x-3(x^2-x)+1]化简这道代数式 f(x)=(2x^2-7x+6)/(1-x) 求最大值最小值f(x)=(2x^2-7x+6)/(1-x)-1我希望有过程阿！ 已知函数f(x)=(2x^2-7X+6)/(1-X) (-1大于等于X小于等于0),求f(x)的最大值和最小值 把5g盐放进45g水里,盐占盐水的( A 5/45 B 1/10 C 5/40 D 1/9 在允许加热的条件下,只用一种试剂就可以鉴别(NH4)2SO4,KCl,AL2(SO4)3,Fe2(SO4)31.NaOH2.NH3.H2O3.AgNo34.BaCl2麻烦顺便说一下现象 1.My uncle likes__(listen) to music 2.Do you like__(sing).Yes I can_(sing) many songs 已知函数 f(x)=sin2x+√2cos(x-π/4) 求f(x) 值域 Helen,______ her mother,_____ singing very much.A.likes;likes B.like;like C.like;likes D.likes;like顺便说说为什么 her mother doesn't like her job beacuse it's very dangerous 对划线部分提问.提问画线部分为it's very dangerous My mother like cooking very much 找出并改正My mother like cooking very much 和Monkeys is naughty and lovely 和Tom watch TV last night和My father went to Beijing by the plane和 We usually have dinner in home 找出并改正 高一化学第10题.需要原因.谢谢 函数f(x)=cos^2(2x-兀/4)的最小正周期是 某溶液中含有较大量的CL^-、CO^2-、OH^-三种阴离子,如果只取一次该溶液就能将3种阴离子沉淀出来,下列使用操作顺序正确的是：1、滴加Mg（NO3）2溶液；2、过滤；3、滴加AgNO3溶液；4、滴加Ba（N 第十一题咋做啊?求详解 直线y=kx（k>0）与双曲线y=4/x交与A（x1,y1）、B（x2,y2）两点,则代数式2x1y2-7x2y1请给我过程好么 第十一题求解答! 问一道初中几何竞赛题 方程kx的2次方-2x+k的3次方-k=0有两个实数根且一根为0,则k= 函数F(X)是R上的单调函数且对于任意的实数都有F(A+B)=F(A)+F(B)-1,F(4)=5,则不等式F（3M^2-M-2)>3的解集为? 若函数f(x)={a(x-1)+1,x若函数f(x)={a(x-1)+1,x 在图中,从A沿直线去D,实际方向是先向东南方向,后又转向东北方向.怎么判断出是先向东南再向东北的啊? 第11题, The fans of jay chou are around the world 改同义句 Jay Chou is very popular________fans.A.inJay Chou is very popular________fans.A.in B.for C.among D.at z=ln(x+根号(x^2+y^2)) 求三阶偏导数∂^3z/∂x∂y∂x Z=ln(y/x)怎么求偏导数求z=x^(xy)的偏导数