磨刀霍霍向猪羊

（1）△ABC中,∠A:∠B:∠C=1:2:3,CD⊥AB于点D若BC=a,则AD等于（ ）A二分之一a B二分之根号三a C二分之三a D根号三a（2）一个三角形底边长为4cm,一腰的中线把其周长分为两部分,这两部分周长的差为2c 一个填空题和一个选择题.选择第四题,填空第16题 初三数学三道选择题 初三数学的4个填空题. 四道初三数学基础填空题17~20 是错误的答案别发,有人要检查的!新课堂 人教版 封面是橘色和金色搭配的 有两个人 一个女生一个男生 都是上半身特写 女的用手打对勾的手势 男的摸着下巴在思考. 5道选择题和1道填空题1.下列说法中正确的是()A.-4没有立方根.B.1的立方根是正负1.C.1/36的立方根是1/6.D.-5的立方根是3√根号下-5.2.如果一个数的立方根是这个数的本身,那么着个数是()A.1 B.-1 c.0 英语填空题6—四（1） 填空题1,2,3,4,5,怎么写, 填空题1 2 3 4题, 填空题1.2.3 第一个必采纳 2、3、4题分别是填空题计算和一道选择题 求填空题4题及以下的题目.一直到选择题第二,很快的 1.氧气是一种化学性质( )的气体,氧气具有( )性,是一种常见的( )剂.2.细铁丝在氧气中燃烧和在空气中生锈的不同点是( ),相同点是( ). 这个清楚点 一些零碎的初中化学填空题,1,石墨是?的矿物之一 2,C60具有?性,可做超导材料 3,焦碳用于?具有?性 4,碳还原氧化铁现象为1?5,一氧化碳燃烧的现象1? 下列有关仪器连接的描述错误的是（ )A、橡皮塞旋进容器口B、玻璃导管口附近沾水后旋进乳胶管C、长颈漏斗下端玻璃管压进橡皮塞孔中D、玻璃导管沾水后旋进橡皮塞孔中这道题应该选什么? A new school is under construction,so we cannot walk___we liked as before.A as B where Cwhich D when 给的答案是B,认为是地点状语从句,如果是这样的话,where在从句里又算什么成分呢?如果选as的话是否可以呢? In Japan,the most popular way of students ____ in the classroom.A.gettingB.to getC.getD.getsLet me ______ the map.A.to look atB.look atC.to lookD.lookMy brother's bag is much newer than _______.A.themB.theyC.theirD.theirs 请帮我讲解一下,下面一道英语选择题.具体点!Can you help me buy some food?there are ____ tomatoes left,but there isn't___rice.many；much 1）He wasn't asked to take on the chairmanship of the society,____insufficiently popular with all members.A.having considered B.was consideredC.was being considered D.being considered2) This may have perserved the elephant from being wiped out as we ----I prefer shuting myself in and listening to music all day on Sunday.----That`s______ I don`t agree .You should have a more active life.A.where B.how C.when D.what 答案选择A为什么?我认为应该选择D啊?求讲解 i prefer shutting myself in and listening to music all day on sundays.That is ______ i don't agree.you should have a more active life.A.where.B.how.C.when.D.what.书上说答案是where 但是我选的是 what.呵呵. Mrs.Brown asked me to go to her daughter’s concert and I ___B___ her invitation with pleasure.a、achieved b、 accepted c、 received d、 obtained为什么不能是C received an invitation没有吗？ It was terribly windy last night and there was ___18-degree drop in ___ temperature.A.a;/ B./;/ C.an;/ D.an;the 几道英语选择题（一定要给个解释）1 —What takes up your most time?—_______.A:Going fish B:Go fishingC:Going rock climbing D:Go swimming2 When the crops fail the people______A:turn hungry B:be hungryC:become hungry D:go hungry3 His j 新概念英语第二册第二课课后题,非选择题摘要写作哥哥姐姐,我下午就用,只要第二课 新概念英语第三册第36课课后选择题Meanwhile his unit was lost and ________had been destroyedA.each of his records B.all records of him C.all records of his D.every record of his 想问一问为什么不能选c B和C之间的翻译有什 新概念英语第二册前三课课后选择题 求：新概念英语第二册课后的阅读理解选择题的题目手头有的书是很早的简版,没有阅读理解的选择题这一项练习,十分需要, 新概念英语第2册第10课有疑问?She struck the keys too hard and two of the strings were broken.为什么是在were后面用了过去分词broken,而不用过去式的broke?我一直认为were后面应该跟动词的过去式,为什么是过 新概念英语第2册第15课有疑问?Twenty people had already left.I knew that my turn had come.尤其“I knew that my turn had come.”可以解释下每个单词的含义吗?为什么用“my turn”?