主矢为什么不等于合力

英语 填空 如果你是英语学霸就快来...这个到底怎么写啊. "Mary,when is the next train?"he asked "why did you stop the car,Tom?"she asked.将这2个句子改成间接引语. Tom will come to the meeting,or Sam will come to the meeting________Tom______.Sam will come to the meeting I wish Tom to come to my party 的同义句是什么?题目提示是；I hope Tom( )( )to my party. She is sitting next to Tom on the S( )?填完整 She hopes _______ her birthday party next Saturday.A you to come to B that you to come C you comeD without 一朵红色的月季花在阳光下十分鲜艳可是当在暗室中只用蓝光照射时就失去了光彩请解释原因 为什么蓝色光照射在红色牡丹花上会失去光彩呢?（同样急,）难- -| i don't think he will come here on time,改反义疑问句 i don not think he will come back next week _____ ____ 反义疑问句 顺便浇浇反义疑问句怎么变化 阳光下,月季花好像更美了.是不是比喻句 You don't think he will come'______________?的反义疑问句 完成反意疑问句.I don’t think he will come here on time,________________? 怎样短时间内更好的记忆英语单词词义?可以不知道拼写,见了知道就行! 一个英语单词的词义问题present 动词的意思有“端上”的意思吗?我查了一下网上的字典,没有这个意思. 用花组词 花怎么组词? 花组什么词 花可以组什么词 进了一个三分球,或,投三分球用英语怎么说?英文翻译 初中物理 用蓝色太阳镜看红色月季花 看到的花的颜色为什么是黑色的刚照射在牡丹花上 反射红色的光 不直接就进入太阳镜了吗 是不是蓝色太阳镜 只能透过蓝色的光 红色的光没法透过 求英文翻译 在篮球比赛中,投中三分球得多少分? 一个英语单词词义问题~people are confident that 'the revealer'may reveal something of value fairly soon.这句话中的 fairly 未闻花名的名字是什么意思?不是字面,是精神内涵 求花名,和寓意! 花组词有哪些 求英语学霸连词成句1.we,try our best,to,pollute,must,rivers,not,our 2.it,be fun,to have a picnic,would,a fine day,on3.a lot of,if,see,go to Nanjing Road,you,you,department stores,will4.with checks,buy,need,to,I,the sweater 初二英语连词成句,without behind people their see turning things themselves heads can‘t 怎么快速背英语单词,如何增加自己的词汇量 长春少儿学英语那里最好 怎样能快点背下来英语单词?我是初中的,背英语单词挺愁的!