原子发射光谱法

完成时 和完成进行时的不同点 为XX喝彩 作文作文500字 Scarely _____ themselves in their seats in the theatre _____ the curtain went up.A.did they settle;when B.did they settle;than C.had they settled;when D.had they settle;than 我选C The rich only___themselves in making money and had no eye for the needs of their workers, A occupedB conerned 请问 concern oneself in 也有忙于 关心的意思 为什么不选B 英语翻译people have often looked back longingly yo am imagined Golden Age ,especially in times when the idea of proess lacked proof. there are usually twelve players in a ()match.（什么比赛?） the question is that we can win the race这句话有错吗?可不可以把THAT 改为WHETHER 【rico】怎么读?最好别用音标解释... 5个长元音是啥? 5个中元音是哪几个?是音标中的元音的5个中元音不是英文字母里的,是音标里的 a writer who kept himself to himself 关于雅思考试口语：我是刚升高三的学生,9月17日刚考完口语 心里一点儿底都没有.考官看不出有什么表情,只是到最后我说：It's my first time to take the IELTS examination,a little bit nervous.考官说：I hop I want to be,so what?这句英语的意思是什么 英语中的 "不定式" 通俗点.关节 这个 "不定" 哎 英语真是 1 Clare sings a song in the hall.划线sings a song 和 in the hall 还要改否定句和一般疑问句 根据首字母提示补全单词A______ every school has its school rules in China . every svhool has its own set of rules to keep students disciplined什么意思如题 evey school has its own rules这句话是不是不对,是不是应该用there be 句型 In the library there are m( ) of towns,countries,and the world 六年级英文翻译.昨天谁和他看电视? 适当的看电视是有益的,但不能迷恋它 用英语怎么说 Tom seemed to have learned the news.不定式中谓语是过去式,不定式就用完成时对吗 英语中的元音是那几个?如果在以元音读音开头的单词前面加数词的话,单数得用an而不是a.哪几个字母开头,数词要用an? Date issued是否与Issued date 等同?为什么用Date issued date issued 是否为倒装句像类似的名词短语还有哪些，麻烦您举几个例子，还有，这种名词短语是否要死记应背？ Documents issued earlier than L/C issuing date are not acceptable.去掉not又翻译成什么? 如何练习英语会话?越多越实际越好,我想把这种状态保持住 怎么练习英语口语还有交际英语 、- Wow!This is a marvelous room!I've never known you're so artistic.- ______ A：Great,I am very art-conscious.B：Don't mention it.C：Thanks for your compliments.D：It's fine.、Did you use to play the piano?- _____________________ A：Yes,I do. “You wanted perfect,you got your perfect”什么意思 一个木箱和一个纸箱共装鞋150双,两个木箱装的鞋与三个纸箱装的同样多.10个这样的纸箱可以装鞋多少双? fast