设F1,F2分别是椭圆C：x2/a2+y2/b2=1a>b>0)的左右焦点,M是C上一点且MF2与…

人的一生最后悔的事,让人可以后悔终生 many a teacher and many a student_______taken part in the stormy discussion. A.have B.has我知道一个many a 连接单数名词,表复数意义,单数位于动词用单数.单数两个many a 用and 连接呀?要很确定的回答.我看过类似 Many students go to the beach and enjoy_____ 急求全新版大学英语综合教程1课后习题答案（完整版） 为啥日晷晷针都要和地轴平行呢 如何摆放日晷? 宏观硬度和表面硬度有什么区别?除了上述的硬度,还有其他什么硬度么?他们之间的关系如何? HRC30硬度有多硬?另外还有什么硬度,他们的硬度区别是什么? 某物质硬度是2.5到3是咋意思,那大概是多硬啊? 用六厘的钢筋拉丝压成3厘的硬度大些还是压成2厘的硬度大些?还是一样的硬度?长度都是五厘米. 求全新版大学英语综合教程第二册（上海外语教育出版社）的课后习题答案.为方便日后手机浏览,还请不要仅仅给个链接,尽量直接弄过来, 一个英语单词：自信,要形容词 古代有哪些日晷 意思是自信的形容词有哪些?我怀揣着______的心态走向赛场（填表示自信的形容词） 日晷是古时测时的仪器,由晷针和什么组成? There ____ many students in the library after school every day.A.has B.have C.is D.are 2道英语单选难题have sth do,have sth done,have sth doing的意思及区别?All the people are against wars.They think war starters will lift a stone only to have it (dropped) on their own feet.根据中文drop是不是落的意思,那石头落 There are many students_____(read)in reading room.应该用read还是reading呢?Call me why! How many girls students are there in the Reading Club和How many bottles of Coke in the fridge为什么前一句要加are there 后一句却不要呢?我是菜鸟 英语单选难点It would be a good idea to use a plastic bottle,____cut off,as a container to grow young plants in.A.of which the top B.the top is C.the top of which D.with its top解释与框剪结构 There're many students in the classroom.____ are drawing,____ are reading.A some; otherB some ;othersC One ;another D Some ;some other --How many students are there in the reading room --_____.A No one.B None .C Nobody .D Nothing 什么是你人生中最重要的? 全新版大学英语综合教程1~4册电子教案（上外的）能不能发给我一份?急用. 求全新版大学英语综合教程1~4册电子教案（上外的） 求全新版大学英语综合教程的听力材料! 求全新版大学英语综合教程MP3高分悬赏!全新版大学英语mp3 上海外语教育出版社 第一课是Growing up!还要每课textB的小短文听力 第一课是SUMMER READING 光盘copy不下来 可不可以直接给我mp3? Every year many ___ (visit) come to visit the Great Wall 填什么,为什么 Many foreigners come to visit the Great Wall every year改为同义句? Many people come to visit the great wall ,＿＿＿＿＿＿（其中大多数是外国人） 独立主格结构请解释 解释一下。。我觉得很多都是定语从句啊。。觉得都不对 2道英语单选.excuse me .could you please tell me which gate _____?A.we have to go to b.we had to go to C.do we have to go D.did we have to go to The scientist tried his best to make his view ____A.to understand B.understand C.understood D.underst 2道英语单选1 how many students are there in your shoool?________the students in our school___ over two thousand 是用 a number of 还是 the number of ··· 原因··2 I kown he is looking to ___to Egypet A reach B out visiting C our visit D