成功不是偶然的作业

高一生物,四个空帮忙填一下,我基础太差不懂.. 求函数y=2cos^2x+sin2x/1+tanx的值域,多谢多谢!要过程哦! 这句英文对吗,有无语法错误Though brushing past each other,my heart will go onThough brushing is past each other,my heart will go on哪句对 点(3,9)关于直线x+3y-10=0对称的点的坐标是?如题.没这个选项。 若方程Ax*2-2xy+3y*2-5x+Ey+4=0的曲线关于直线y=x对称,则A=___,E=___ 哪位人教我高一生物,老师没教. 是生物科代表,很喜欢生物老师,因为她才有了动力,他如果不教我,我怕我会颓废,怎么 急需唐山地震英语演讲稿不需太长,三分钟以内.要有思想深度.点名一下自然与人类、团结的中国人这些方面.希望今天二十二点以前可以得到答案. 英语作文：如果你是唐山大地震中的幸存者,描述你的经历 一句英语看有无语法错误Life is hard like a piece dog shit 【急】2012洛阳调研根据以下三个热化学方程式根据以下三个热化学方程式2H2S(g)+3O2(g)=2SO2(g)+2H2O (l) △H1=-Q12H2S(g)+O2(g)=2S(s)+2H2O(l) △H2=-Q22H2S(g)+O2(g)=2S(s)+2H2O (g) △H3=-Q3Q1,Q2,Q3为正数.比较Q1,Q2,Q3大 已知H2(g)+F2(g)=2HF(g) △H=-270A：一个氢气分子与1个氟气分子反应生成2个氟化氢气体分子放出270kj热量这句话为什么错 唐山大地震的作文. 求直线y=ax+b(a≠0)关于x轴、y轴、原点对称的直线的函数解析式 简爱的摘抄和评析7段,每段100字左右摘抄再加上100字左右的评析文章,不要太长,有别的书的也行,只要够7篇（一本书7篇）就ok了! 速度求简爱中最喜欢的段落摘抄并点评（800+）rt .英文句子,帮忙看下此句有无语法错误.如题：It has a significance of milestone for us and Daxin to cooperation of the A+H listing business,the achievement of diversification,the expansion of our businesses in the mainland market. 或 怎么写热化学方程式 热化学方程式 该怎么写 1.用ignore的适当形式填空.（ ）by the host at the party,he was unhappy.2.完成下列句子.（1）He ————（受了好多苦,注：用上suffer这个词）when he was a child.（2）Do you often ————（遭受头痛的折磨 .会做得来看看..我会追加分的选芒梗稻种需要配制密度为1.1×10³kg/m³的盐水,某农户配制了50L盐水,取出500ml 进行监测,测的这些盐水的质量为600g,(测完后将盐水还倒回）.1.请帮助他分析 Although it had been ______struggle for him to finish ______experiment,he enjoyed the result with ______satisfaction.为什么答案是：a ; the ; / 1.They're collecting money for the victims of the earthquake.It's a very good _____A.purpose B.reason C.cause问此题答案为什么是C不是B?2.They found _____ that the goddess turned out to be ...A.surprisingly B.with surprise C.to their surpris 花的英文怎么写 英语翻译 跪求《童年》的好词好句好段加赏析 把不同类词语找出来.1茶杯 筷子 菜碟 飞碟2粉笔 钢笔 毛笔 铅笔 寻找类似词语有没有类似于我爱你、我恨你、我想你、我怕你,的这种我（ ）你的句式 找不同类词语气势汹汹.全神贯注 眉开眼笑 昂首阔步 第二题.找不同类的词. 1.We have a history lesson____________Firday afternoon.A.at B.in C.of D.on 2.__Please write down the telephone number.__Sorry,but I have no ______to write on.A.pen B.ink C.paper D.time3.__What's wrong with your son's____________?__He can't see things 1.We have a history lesson____________Firday afternoon.A.at B.in C.of D.on 2.__Please write down the telephone number.__Sorry,but I have no ______to write on.A.pen B.ink C.paper D.time3.__What's wrong with your son's____________?__He can't see things