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Exercise can keep you healthy.的同义句Exercise can keep you_ _ _ 太平洋科学中心 PACIFIC SCIENCE CENTER怎么样 What is shopping mall/shopping center?如何回答 聚氨酯的化学分子式怎么表示? VINCOM CENTER SHOPPING MALL怎么样 When did your mother ()Beijing?A.return B.return to C.return back D.return back to TENSION 求几个配合物的杂化轨道判断方法比如[HgI3]3- sp2[Cu(NH3)4]2+ dsp2Fe(CO)5 dsp3,spd3 为什么会有两种的?[TiF5]2- d2sp2[Co(CN)6]3- d2sp3 我希望是知道这5个离子是咋么判断的,从原子轨道的到判断什么杂化类型 tension什么意思 如何背? 照片中那两个配合物的配位数是怎么算的, room与seats与place与field与ground的区别 Do you have a good breakfast every day It is very important .We can easly understand w______ 补全对话.A:DO you have breakfast every day?B:Yes,I do.I eat hamburgers and apples.What about you?A:I eat eggs and bananas.()?B:For lunch,I have chicken and rice.And I have lunch at home.What about you?A:I have lunch at school.Do you like ice-crea tension的中文意思是什么 数环和一般的环的概念具体是如何定义的 ? WHAT DO YOU HAVE { FOR ]BREAKFAST EVERY MORNINR.为什么填for 稀土配位化合物性质请问配位化合物有哪些性质和具体的应用 如导电性 荧光性 之类的 稀土发光材料具备哪些性质?有什么样的结构 请各位高人告诉 稀土的性质 Gumbel distribution什么意思 .2.3 g金属钠变为钠离子失去电子数为0.1NA place area ground的区别是什么? 2.3g金属镁变为镁离子时失去的电子数为0.1Na? 如何区分room space seat place ground要具体包括用法,可不可数等等.（最好有例句） 选择 ．．急!The car he bought last week ____ have cost him 160000yuan,for it's old.如题,A.oughtn't to B .needn't to C.shouldn't to D.have to ________ have you been ________ I saw you last time?A.Since,where B.When,where C.Where,since D.While,as 为什么2.3g钠变成钠离子失去的电子数目为0.1NA 稀土是什么物体? 中国对其他国家出口稀土,这个稀土是什么物质,有什么用途.由什么组成? 看重物质是什么意思 There is ___ sugar .you need't go to buy any .A plenty of B a large number C a great many D.plenty 清选择并解释