Ben had a broken arm否定句

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• 数学题目 急啊急( ⊙ o ⊙ )啊! 教教我:-O1.Don't jump into the pool?（换一种句式但意思不变）2.Ben liked the loud music.（改写否定句,一般疑问句及肯定回答）3.They went to the park yesterday.（改写否定句 一般疑问句 及肯定回答）4.Mary had a shower yesterday evening.(划线划在 had a shower）错了 是英语题目
• 1.Two fishermen said they had ever seen ___UFO.A.the B./ C.a2.Ben fell off the bicycle and he____.A.is hurt B.was hurt C.hurt3.That is a____window.A.breaking B.broken C.broke4.Her job was____ care of children in the past.A.take B.taking C.to take5.The news both excited and worried______.A.I B.me C.mine
• 英语的：阅读理解,阅读短文并选择最佳答案2013年5年级快乐寒假英语第64页短文的问题1.The hurt boy was ()A.home in bed B.lying on the ground C.moved by Cathy and Carlos D.carrying someone2.The boy had broken his()A.leg B.splint C.nose D.arm3.Carlos looked for the nurse()A.inside the school B.on the playground C.after school D.outside the classroom4.Cathy's advic(劝告）was()A.useless B.borrect C.silly(愚蠢的）D.dangerous(危险的）5.Moving the boy could have been()A.dangerous B.easy C.safe D.intelligent(明
• 几个英语句型转换句子,帮帮忙划线提问1 He had broken his arm when I saw.(划线：had broken his arm)2 When he had read the note,he ate it.（划线：ate it）3 Jack didn’t go to the cinema because he had seen the film.（划线： because he had seen the film） 4 We had the toys for ten years before we gave them to the child.（for ten years ）5 She had written the book by the ehd of 1960.（划线：the book ）还有几个关于过去完成时的拜托了，各位：用过去完成时连接两句：1 We cooked the dumplings。We ate them up。2 Jim’s father mended t
• 如何he had broken his arm when I saw him对had broken his arm 划线部分提问拜托了各位
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• He __had broken his arm_ when I saw him.(对划线部分提问）
• I am so sad ,because my mom ().She is sad now.A.had a broken arm B.has a hea
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• Ben had a broken arm否定句
• A^2+2A-3I=0问m满足什么条件时(A+mI)是可逆矩阵过程详细 谢谢了
• 设A为三阶实对称矩阵,且矩阵E+A 2E+A 3E-A 都不可逆……设A为三阶实对称矩阵,且矩阵E+A 2E+A 3E-A 都不可逆,则二次型x^TAx经正交变换x=Py化成的标准形是?3y1^2-y2^2-2y3^2 我算出来的是：-y1^2-2y2^2+3y3^2 我的做法是,因为都不可逆所以：|-E-A|=0 |-2E-A|=0 |3E-A|=0 所以：γ1=-1 γ2=-2 γ3=3难道是说,标准形必须正的在前,负的在后?还是说这两个答案都对?