锂和水反应

解不等式：2-5x≥8-3x （1-40%）X=1800-X-200X 解方程 Lang Lang （ ） as a UNICEF Goodwill Ambassador since 2004 when he went to Tanzania with a UN team to visit children threatened by AIDS.A has worked B has been workinC had been working D worked（ ）ever rising house prices in China,18 percent of 求满足不等式组｛3x-5＞1,①；5x-18≤12②的所有整数解之和. 1.I want to know _____ Near the bus station.A.where does Mike live B.where Mike lives C.Mike lives where2.He usually has lunch (at 12:30).对括号里的部分提问____ ____ _____he uaually have lunch?3.我们匆匆吃了饭,然后跑着去赶火车 求满足不等式组｛3x－5>1｛5x－18 同义句转换：Why didn't your mother come to Bob's birthday party last night?Why didn't your mother ( )( ) at Bob's birthday party last night?Dad was watching TV.Mom asked him to water the flowers in the garden.Mom asked Dad to water the flowers 1、I like the cartoon characters Tom and Jerry best.2、He camp up with a good idea.3、My life is filled with happiness.用简单的英语解释上面三句话（注：不是翻译成中文） 200x+50x等于50x平方 x等于 50x平方+105x-23=0怎么化简计算 解不等式3x-2＜5x+4 解不等式3x-2＜5x+2快点!我要做作业! 英语高手请进!初二（上）英语被动语态!急!明天要交!二.单项选择题( )11.--Did you go to Jack’s birthday party? ---No,I____. A. am not invited B.wasn’t invited C.haven’t invited D.didn’t invite ( )12. Chin 只是中国发明的 这个问题正在讨论 初二的被动语态,请把下列句子转换成被动语态（第2、3题写出两种改法）1:We must keep the room clean.2:Lucy sent me a present last term.3:He gove me a new pen.4:Tom saw her swim in the lake yesterday.5:He made me do that for 初二被动语态的几道题目we must give the students some books（2中表达方式被动）the organizers hope that the show will be________ （success） held. x=1\4y 1\50x+1\300y=1、300x=1\4y 1\50x+1\300y=1/300 化解50x∶300y=1∶4 数学题七年级下册二元一次方程组比例题 x+y=9 50x:300y=1:3 3x²－2x＋1＜0,解不等式,求x取值范围 若关于x的不等式3x²-x+c＜0的解集为∅求c的取值范围 已知同时满足不等式x²-2x-8>0与3x²-(6+a)x+2a 要准确,大小写注意,不会做就滚.1、Who gets up ______ of the three children?(late)2、He is much _______ at swimming than his brother.(good)3、Tom is getting _______ after a few days' hard work.(ill)4、Which is ______ ,water or oil?(heav 不等式3x-a 英语问题,明天考试,请快点回答,谢谢①The job is（ ）for me ( )A.enough difficult , to do B.too difficult ,to do C.too difficult ,to do it答案是B,但我不明白,C为什么不能选?②If 英语高手进,急的 明天考试1. Can I swear my hair long like the other boys? I'd rather ___A you didn't B you won't C you wouldn't 这是选A吗 ?虚拟语气 与现在相反?2 ___one of the leading novelists in US, Amy has also written 明天考英语 这是我们明天考试的英语作文题目,谁能告诉我题目说了什么,大概要写些什么.The Jesuit China missions of the 16th and 17th centuries "learned to appreciate the scientific achievements of this ancient culture and made them kn 我19号（明天）就要考试了,可是还有弄不懂的题目,请选择正确答案并解释理由：1、I don't think English is ____________ Chinese.A.as important as B.as more important as C.important as2、Last Saturday's football match was 亲们,明天要月考了.这题一直弄不懂呀···有一瓶不纯的一氧化碳气体,其中混有少量水蒸气和二氧化碳,现提供下图所示的甲、乙、丙、丁四种装置（每种装置均有多个满足需要）,请设计实 关于解比例的数学题20道 英语短对话都听不懂,该怎么练听力?之前考过一次四级,就差十几分,听力分才110多,真晕啊!