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在下列变化中,必须加入氧化剂才能实现的是：A碘离子变为碘单质B铝离子变为偏铝酸根离子C NH3变为NH4＋ D三价铁离子变为二价铁离子 还要理由!第二题：浓度都为0.1mol/l的Na2CO3,NaNO3,NH4NO3三种 注意是第三题 情态动词有哪些? 有关情态动词---You didn’t come to the party yesterday?---_______ I’m not a party animal.A.How can I have B.How would I have C.Why should I have D.Why must I have 为什么选C不选D 情态动词有几个 The Vows的《Show Girl》 歌词 一道选择题Again and again the doctor （）the crying girl,but he couldn't find out what was wrong with her.A.looked over B.looked after C.looked for D.looked up.选A对吧 刷牙的英语怎么读 英语翻译WoooohSometimes,On My WindowI Notice That You've Been Crying Over Here..WooohAnd I WonderWhy you just don'tKick into the club instead of living here..(Chorus:)You see love at first this summer timeThat's when you think that everything's f 英语翻译再说一下play in 的用法 14(3和4)高二化学 描写战士壮烈牺牲的诗句或词语 1.在滴有酚酞的50ml,0.1mol/L盐酸中,滴入0.1mol/L的烧碱溶液,当滴至溶液由无色变为浅红色时,所用烧碱溶液的体积为A 50ml B＜50ml C＞50ml D无法确定2.对酸碱完全中和的理解正确的是A中和后的溶液肯 1·Beck is an honest businessman.Our company and his have had a lot of ( ) in the past.A`deals B`1·Beck is an honest businessman.Our company and his have had a lot of ( ) in the past.A`deals B`agreements答案选A,为何不是B 2·He had decide to g I didn't hear the phone,I___out,A .must be B,must have gone C.must go He didin't hear the bell ring;he____asleep A.must be B.must have been C.should be D.should have beeIf he'd taken them regulary,the pills___himA.can help B.might have helped C.will have helped D.could helpJim,you__to your brother like that.If you go o 情态动词有哪些? 情态动词都有哪些啊 I don't know where I am going ,but I am on my way 正确的意思是什麼? 〔高二化学〕求解第三题. 和男友GJ之后pp很湿,带TT了,而且做的时候有声音,像是TT发出的吧.我不懂.这样会怀孕吗? 情态动词包括那几个 情态动词是那些 情态动词有哪几个? 中文里情态动词有哪些 1.我不知道明天是否下雨 I don't know __ __ __ __ tomorrow.2.她惊奇地发现自己迷路了.She was ___ ___ find that she ___ ___ 关于英语填词的,帮个忙,谢谢he了.分别是:1.How many eggs can you ___________?2.____________________ the toy car to make it go.3.The ___________________ man had a special.4.It was ___________________ of you to help.5._____________________ （英语选择）------ a noise just then?A.Have you heard B.Were you hearingC.Are you hearingD.Did you hear请高手讲清楚这个题目,谢谢! 什么是情态动词?有哪些?我想知道~ 情态动词都有哪些?谢谢你帮我解决我的疑问 急急急!请问各位高人英语情态动词有哪些啊?全部哦!谢谢啦! Where ( is or are) my glasses?如果回答正确,