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She isn't good at English …改同义句.She isn't good at English .Her brother isn't good at English ,neither.（改同义句）She isn't good at English ,___ ___ her brother . she isn't good at English 的同义句是什么?快, 试用作差法比较8a^2+5a+3与8a^2-a-1的大小. 试比较a^3+8a与5a²+4的大小如题 函数y=根号4x-1+2根号3-x单调递减区间为 2.5a+4=2.8a-8如何解 ---Tom isn’t having a good time at the moment.---- N_______ am I.---Tom isn’t having a good time at the moment.---- N_______ am I. Tom isn't good at Maths.I think he needs to do more (things you do to develop a skill)about it.括号里是英文提示、求解! Tom isn't good at Maths.I think he needs to do more_____about it. “生活处处有语文”给我的启示要600字 用英语怎么说? 已知方程2x的a-1次方-4y的4b+a次方+1=0是二元一次方程,求a,b的值；知道（a-1)=1,a=2(4b+a)=1,b=-0.25； 解二元一次方程组{10分之y=x 6x=y 如图,DF∥AB,EF∥BC,AE=5,EB=3,CD=2.求BD的长. △ABC中EF∥BC,DF∥AB,AE=3,EB=5,DC=6,则BD=?(原题就没有图) 如图,AD//EF//BC,AE/EB=2/3,DF=4cm,则DC=多少 如图已知AD//EF//BC如果AE=4,DF=5,EB=6,求FC的长,2如果AE:EB=2:3,FC=6,求DF的值?没图纸? 方程组 X-Y=15 6X-10Y=78写出过程,算出的方程式.如：①X+Y=8 ②10X+6Y=64 解：由①得Y=8-X,带入②中：Y=15+X③?哪里来的③ 求函数f（x）=lnx－1/2x^2的单调减区间 求lim((2x^2+x-4)/3x^3-x^2+1),X趋近于无穷大时的值 Tom doesn't like thrillers and john doesn't like them,too 哪里有错误 tom doesn't like his __(old) brother 圆x^2+y^2-4x-2y+3=0上到直线x-y-5=0的距离最近的点的坐标是A（3,0）B（1,2）C-1,4）D（-3, 函数y=2x-lnx的递减区间是什么 函数f（x）=2x^2-lnx 的单调递减区间? 若函数f(x)=lnx-1/2ax2-2x存在单调递减区间高二数学若函数f(x)=lnx-(1/2)*ax^2-2x存在单调递减区间,求实数a的取值范围. 函数y=1/2x^2-lnx的单调递减区间为 A.(-1,1],B.(0,1],C.[1,正无穷),D.(0,正无穷)要理由 已知f(x)={(3a-1)x+4a x 已知f(x)= (3a-1)x+4a,x.（图在下） Tom doesn't like （）(这样的)a job Tom doesn't like writing articles(改为同义句) 感情【 】【词语搭配】