五年级上册创优答案

若f（x）=log4（4^x+1）+kx(k属于R)是偶函数,试求方程f（x）=1/2x+6的根的个数 已知函数f(x)=x^2*log4(a),如果方程f(x-1)+2x=0无实根,求实数a的取值范围 设f(x)=x(x-1)(x-2)(x-3),则：方程f′(x)=0,在〔0,3〕内的根的个数是多少? 寓意歇后语 一道关于时态的英语选择题--Why don't you drive to work?The public bus can be a little bit crowded sometimes.--But my car ___ at the 4S dealter.A.has been repairedB.is being repairedC.has been repairing答案:B我觉得ABC这三个答案都 纨绔这两个字怎么发音, （纨绔）这两个字应该读什么啊 如图矩形OABC的顶点A,C分别在x轴和y轴上,B的坐标为（2.3）,双曲线y=k/x（x＞0）的图像经过BC中点D交AB于点E,连接DE（1）求k的值及E的坐标（2）若点F为OC上一点,且△FBC和△DEB相似,求直线FB的解析 明星这个词是什么时候出现的? 起明星这个词中,哪个字写错了? 明星这个词中星是什么意思 李白的哪篇词中有＂明星＂这个词? 紧急,几道关于时态的英语选择题1.I know a little bit about Italy as my wife and I ________ there several years ago.A.are going B.had been C.went D.have been 2.The flowers were so lovely that they __________ in no time.A.sold B.had been so 请帮我做几道英语选择题.分别说明下 是什么时态1.I won't lend you the book until I ( ) reading it.A.will finish B.have finished C.shall finished D.will have finished2.Helen ( ) her keys in the room so she had to wait until her husba 几道英语时态选择题1.Jack,I____go now,the Turners ___for me.A.must,will wait B.must,will be waitingC.have to,must wait D.have to,should be waiting这题答案是C.为什么不选D?2.John visited his uncle before he ____ for Beijing.A.would le 补充词语 .（）的明星 （）的空中温故知新六 He is going to buy some story-books变为一般疑问句并做否定回答 求赞美明星的词语我想学习一下赞美和表扬别人的中文,要求50个赞美别人的词语每个词语要2个字的!只要2个字的词语! there were some story books in the bag just now 改为一般疑问句急 I have some books.(用what提问) ---------------- What _(be)in the bag?There are some books inWhat _(be)in the bag?There are some books in it I have many books in my bag 同义句：I have___ ___books in my bagI have many books in my bag 同义句I have___ ___books in my bagMy perents bought me a bicycle同义句My parents ___a bicycle___meHe saw nothing just now同义句He ___ ___ ____jus 拜访某地和拜访某人意思的 英语词组 有一个英语词组 意思是拜访但是 最后一个词是 什么什么by 还有敬酒咋说 还有翻译一下 my host family ------------特意的使我感到宾至如归、 英语连词组句：我将和我的同学们一起去拜访我们的老师l be visiting my classmates with 有一个英语词组顺便拜访,look开头是什么 英语作文 60词左右如今,电视节目已经成为人们日常生活的一个重要部分,有许多学生沉溺其中,你是怎样看待这一现象的?请就此话题写一篇短文,说明你的看法,60词左右 流行语2是什么意思 中国杰出的工程师除了詹天佑还有谁! 为什么说詹天佑是中国近代杰出的铁路工程师? 詹天佑是我国杰出的爱国工程师,他主持修筑了【?】铁路 找名词1 have many books in my schoolbag ._______________________________________________2 Jack is my friend.He is strong.He has short black hair and big eyes.___________3.This is mysister.Her name is Mary.____________________4.This is my school.It