四年级数学递等式计算

碳是金属元素,为什么一元硬币是碳和铁的合金 有机化合物中是否含有金属元素? 碳元素是金属元素吗?呃……我们大队长的书上有这么些……到底是吗? it is a pig改成一般疑问句 She is not easily -----.Because she knows everything.\ A.frightened B.to frighten C.frightening D.f 第7道,顺便说一下、Fright frighten frightened frightening第7道,顺便说一下、Fright frighten frightened frightening 的词性还有翻译... Is it a pig? The boy feels ______ at night.A.frighten B.frightening C.frightened D.frightens lovely oral sex is not sex在圣经哪页bill clinton不是曾经用这句话脱罪了吗 I heard him sing in the classroom改为被动语态?someone say it should be modified likehe was heard to sing in the classroom.is that correct? Forgotten as the past,cause history will 歌曲god is a girl 中,forgotten as the past ,cause history will 和上文的理解连不上 We have heard him sing改为被动语态.He ____ ____ ____ ____ ____ by us.hear 后面不是不可以加to do 不定式吗,请注意要填五个空！ I want is a girlfriend,not a sex partner 帮翻译一下. -Look!Linda is in the classroom.-it____be Linda.I saw her in the park just now.-Look!Linda is in the classroom.-it____be Linda.I saw her in the park just now.A>can't B>mustn't C>shouldn't D>won't请讲解原因~Thank you so much! Look!Who ____(is speaking,speaks) English in the park? “It is as fun to take a walk though the park”找错误 Do not hold my hand.That you will understand. when I run up or down stairs,I can't hold a k________ in my hand.That will hurt mek和横线上的字母是一个单词 Everyone is special in their own way. the quarrel ___ to the fight started from theirA.led B.to lead C.leading D.having led bbox 空心弹舌要怎么打, BBOX的空心弹舌怎么练习?要文字的就是空心弹舌的文字教程、 bbox空心弹舌问题 bbox空心弹舌 新手求救我真的对空心弹舌无语了 我把舌头抬起头总是打在舌头上 缩一点却又打不下去 根本不能挨着下面 更不要说声音了 是不是我舌头原因啊 望大家真心帮我一下 感激不尽 BBOX 大鼓刷碟 空心弹舌虚心求教,这两个音我总是拿不准,特别是大鼓刷碟,到底该怎么做发声才好听,怎么才是正确做法?空心弹舌,为什么我弹出来的声音那么小,非得晚上一个人在近下来的房间 Where do you think a newly couple should live? Living with their parents or on their own?你知道是什么意思吗? you are very pretty,will you be my gf and more Active learning and Passive Learning的英语作文在那找呀 Only if people learn to conserve nature and not waste money_____a future.A.has our world B.does our world have C.our world has D.that our world has Do you have ___ to ask me?——No.I don't.Thanks.A.else anythingB.anything elseC.other anythingD.anything other