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初一暑假乐答案谢谢,作业里我有许多不会. 孩子讨厌写作文,怎么办? 已知b^2+c^2=2a^2-3a+7,bc=a^2-2a-1,则a的取值范围是_______________.为什么?... 已知b²+c²=2a²-3a+7,bc=a²-2a-1,则a的取值范围是已知b的平方+c的平方=2a平方-3a+7,bc=a平方-2a-1,则a的取值范围是 已知b²+C²=2a²-3a+7 bc=a²-2a-7,求a的取值范围 万一考过的大致地说一下. 我现在初一,可以告诉我初中全阶段的数学内容吗? 一,已知,如图1,在△ABC中和△A’B’C’ 中,CD和C’D’分别是高,且AC=A’C’,CD=C’D’,∠A’B’C’=∠ABC,求证：△ABC≌ △A’B’C’二,如图2,AB=AC,BD⊥AC于D,CE⊥AB于E,BD、CE相交于F,试说明AF平分∠BAC. 第6届希望杯四年级二试有答案吗? 10.完型填空,急. 英语完型填空1~10, 一道完形填空 I have a dog () my home.It is my good friend.() name is Wangwang.It has () short legs and () big ears.It ()eating meat.I often do morning exercises () it.I often play with it () school.I have () friends in my school.They are Amy an 只要语句通顺,200~300就行了 五篇英语日记, 谁有?好的加50 分 龙岩市小学六年级寒假乐园第14页的解决问题怎么做呀 第24课《大自然的文字》根据课文 列表格 在今天22点之前必须回答！ 24大自然的文字课文最后一个自然段 完型填空10个 6．～X 35 ＿＿＿＿＿＿＿＿33～＿＿＿＿＿＿＿＿ ７个数从左往右排成１行,平均数３１,前３个数平均数２９,后５个数平均数３４,第３个数是几?甲,乙,丙三个数的平均数是82,甲 乙两数的平均数是86,乙,丙两数的平均数是77.乙数是多少?甲,丙 P35页.4.甲和乙从两地同时出发,相对而行,两地相距100千米.甲每小时行6千米,乙每小时行4千米.如果甲带一只狗一起出发,狗以每小时10千米的速度向乙奔去,遇到乙后即回头向甲奔去,遇到甲后又 五年级上册数学寒假乐园第九页答案 完型填空(10分)Most American families like to have a vacation ( 1 ) summer.Summer is a good season(季节) ( 2 ) vacations.It is very hot during the months of July and August.Children do not go to school during these ( 3 ) months.Some ( 4 ) like 五、完形填空(10分) When someone asks me what business I am in.My face feels 1.I envy(嫉妒) people who can say that they are writers,bookkeepers and doctors.All these jobs speak for themselves.I really do make a living by 2,and a good one,too 三、完形填空(10分Li Hua liked __36__ very much.She fed a cat and a dog.She liked them and often played __37_ them.There was a big tree in the yard(院子).There was a bird nest(巢) on a branch(树枝) near her window.There were four small bir 课文哪些自然段描绘了《月光曲》的内容? III 完型填空(10分)III 完型填空(10分) Mike and Eric are my best friends at school.We1._______ in Class 3.The two boys are twins( 双胞胎 ).2.______ some students don’t know that3. _______ are twins, because there are 4._______ differen 『紧急+10分』完形填空1、__________2、__________ （1）哲学的基本问题是思维和存在的关系问题,但可以说是意识和物质的关系问题吗?可以说是意识和物质的辩证关系问题吗?（2）3G手机能宽带上网,视屏通话,网络游戏,移动电邮等.这体现了 （初中数学）解以下两题的方法是?锐角三角函数的竞赛知识和题型是什么?如图,Rt三角形ABC沿直线BC平移得到三角形A'B'C',使点B'与C重合,连A'B,则tan∠A'BC'的值为? 很急的!高一数学题目!一小时内要!帮帮我!已知xy