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如果x+y=m,x-y=n,那么2x-3y=（ ）这步是怎么算出来的, x+2x=y+3y=40+x+y 2X(2X-3Y)-3Y(X+Y) 高中作文《我》的范文,速回! 运用插叙手法关于自己成长的故事,作文600字 so she took an umbrella with her,后面 with her 所以她带了一把雨伞 ,后面 with her She said "with pleasure" 怎么改间接引语? Miss Xu went to her home and h_____her with her English.She's a good teacher.We love her,too. 读了再阅这篇课文,你有什么启发 在下面的句子里的括号内加上合适的关联词.60年前,我奶奶（ ）从早到晚地干活,（ ）是填不饱肚子.她（ ）关心自己的丈夫和孩子,（ ）对自己的乡邻们很同情.她看到邻居张大妈死了,（ ） 改错题 ——how long have you bought this bike ——for two weeks1.the garden needs being watered2.the children were taken good care how long have you ___this book a.bought b.buy c had d buying为什么 How long have you _______(have) this book?用所给词的适当形式填空 Stellarium 虚拟天文馆怎么才能看流星雨,别人说的我用过了,可能是我没听明白,或者是版本不同的缘故吧. 如何用stellarium模拟流星雨我也只模拟过日食和月食,只是听有人说可以模拟说流星雨.但是我试过的好象不行呢 虚拟天文馆如何弄出流星雨 she is tall like you but she doesnt have long hair lts short and brown翻译 what color is this cap翻 do you have long hair or short hair? I used to have short hair but now I grow it long.怎么翻译? 用英语介绍自己的好朋友雷文博,50个单词左右. 孙浩用一根绳子测量一棵树树干的周长,将绳子3折,围一圈多1米,将绳子4折,围一圈少1米.问 用英语介绍熊猫,50单词以上. 小明用一根绳子来测量一棵树树干的周长,选好要量的树干后,用两折的绳子绕两周后余1.5米若用三折的绳子来量,绕一周余2米.这棵树树干的周长是多少 不要太长的! 击球像《爸爸的花儿落了》这样的用插叙手法写的作文,文章情节稍微复杂一点的, 用插叙作文800字 成语天天疯狂答案啊 求解 成语天天疯狂 一本书 一双手 还有一个向上的箭头和一个向下的箭头.最后一个字母是Z this ruler is long,but that one is s___（写出单词的正确形式） This ruler is too short.Can you give me a long one?为什么不能用longer? 根据句意写出某个词的反义词 This skirt is too long .Do you have a ___one. 成语天天疯狂求解答~