自然界已知的最硬物质是什么

200字以上的古文初中阶段可以理解的古文,要原文而且从头到尾的! 握手是出左手还是右手啊? 如何背高中的文言文（在1个半小时内背完200字左右) 要一段文言文的评析200字就这段文言文（底下有翻译）,写个200字的评析齐破燕赵欲存之 齐破燕,赵欲存之.乐毅谓赵王曰：“今无约而攻齐,齐必雠赵.不如请以河东易燕地于齐.赵有河北,齐有 street central还是street center?the post office is at the street c__? at,post office,the,get,off怎么连词成句 谈谈词语的感情色彩 200字左右的文言文要高一年级没有学过的·· 200字-250字 文言文 找几篇200字左右的古文,适合练书法的,急 我要30个在200字内的文言文及解释 they sing songs together every morning什么意思 谁有红对勾数学必修2第33课时的答案要完整的 next to the bank is a hairdresser 同义句 （） the bank is a hairdresser they sing songs together every morning 怎样变否定句 Next to the bank is a hairdresser.同义句 next/grocrey/the/to/the/store/is/bank/连词成句 1.He is one of the students _______ worked out the difficult maths problem.A./B.whom haveC.who hasD.that have2.-Did you give your father _______ -Yes.I advise he _______ smoke.A.an advice；should giving upB.any advice；give upC.any advice；giving 【高一英语】单项选择,He hurried to the railway station,_____ buying a ticket for her daughter.A.with the purpose of B.on purpose of C.by purpose of D.at the purpose of --You didn't come to the party yesterday.--____?I'm not a patrty animalA.Why should I haveB.Why must I have 英语一般疑问句助动词用do还是are?怎样区分? 有一首英文歌,谁知道是什么?sing个累的 sing 各类的 什么什么 英文歌歌次带有SING的 高一英语选择 解释原因 41期-shall we go to the art exihibition right way?-____A it is your opinion B it is all up yo you (B)now that Bobhas publicly admitted he was wrong,he is ___ the child-raising and household tasks with Ma 40,41期-is the haedmaster____at the present time?i'd like to go with him-not until this afternoonA available B suitable (A)he left his hometown,___ never to come back againA determined BdetermineC be determining Dto be determined (A)unlikly,he was s 论据一定要举个事例吗 English uncle thank aunt 哪一个n的读音不相同 辨音题uncle thank English orange (n) 中国初三相当于墨西哥的几年级 在英语中 给出一个句子 对他进行提问 怎末提问啊?到底怎末用助动词提问 疑问句啊?帮帮我 英语助动词在疑问句中如何使用?英语中的Is,Do疑问句中如何使用的,什么时候用IS,什么时候用DO呢?我知道am is are的区别,do,does的区别,所以只要讲清楚,is和do如何在疑问句中使用就好了 英语疑问句的助动词怎么用我想问一下：英语的助动词该怎么用?什么Did Do Does Was 都是疑问句开头的~什么情况下用呢?