深圳被校服勒紧的大胸

Let’s put the matter to the vote and not waste our time arguing about it,A.shall we B.can we C.may I D.will you 英语翻译 Our teacher is vevy s().She makes me tired. 设函数f(X)=lnx-1/2ax^2-bx F(x)=f（x)+1/2ax^2+bx+a/x (0＜x≤3） 以其图像上任意一点P(x0,y0）为切点的的斜率k≤1/2恒成立,求实数a的取值范围 Waste paper shouldn't ____ enerywhere.It's our duty to keep our city clean.A.be thrown B.thronw C.is thrown D.are thrown It's on duty to keep our classroom clean 改为同义句_______ ________ our classroom clean is our duty. 已知连续型随机变量X服从区间[a,b]上的均匀分布,则概率P {X 句子改错 Our English teacher is a little funnier than their句子是社么意思？ our history teacher is a veryserious mane is nice but he never smiles 已知:关于x的一元二次方程mx²-(3m+2)x+2m+2=0(m>0)(1)求证：方程有两个不相等的实数根（2）设方程的两个实数根分别为x1x2（其中x1＜x2）,若y是关于m的函数,且y=x2-2x1,求这个函数解析式 在三角形ABC中,向量AB=a,BC=b,CA=c,若a.b=b.c,则三角形形状为?（为什么是钝角?） △ABC中,若向量AB*向量BC＞0,可以确认△ABC是钝角三角形吗?为什么 在△ABC中,若向量AB×向量BC 在△ABC中 为什么 “向量AB乘以向量BC＞0,△ABC就是钝角三角形” Don't throw l＿＿＿ everywhere.Please keep our city clean.《全品学练考》中P67 our teacher is very strict and I'm very tired()class 向量AB*BC>0 ABC为钝角三角形的什么条件?答案是充分不必要 BA*BC＜0 接下来思路是什么? our Chinese teacher often make us very tired修改病句 三角形ABC中,为什么 向量AC乘向量AB＜0,则角A为钝角. 解不等式 |x2－5x＋6|＜x2－4谢谢了, 13..15题选几 x2-5x+6 解不等式x2-5x-6 不等式｜x2-5x+6｜ 不等式1/x2+5x+6 keep our classroom clean.don't make it_________. △ABC的三边BC,CA,AB的长分别为a,b,c,这三边的高一次为ha,hb.hc,若a≤ha,b≤hb,则这个三角形是什么三角形?A：等边三角形B：等腰直角三角形C：直角非等腰三角形D：等腰非直角三角形 设三角形ABC的三边AB=c,BC=a,CA=b,他们对应的高分别为 hc：ha：hb,且a:b:c=2:3:4,求ha,hb,hc. 证明两个三角形相似有几种 a,b,c为△ABC三边BC,CA,AB的长,这三边的高依次为ha,hb,hc,若a理由 设ha,hb,hc,分别是三角形abc的三边BC,CA,AB上的高,且满足3hc方=hahb,则角C的取值范围是 My home is (two kilometers away) from school.(对括号里提问)