What is water?水是什么?The students were having their chemistry class. Miss Li was telling the students what water was like. After that, she asked her students, "What's water?" No one spoke for a few minutes. Miss Li asked again, "Why don't you answer my question? Didn't I tell ...
“Our water is getting dirtier and dirtier. Thisis a problem."词汇积累chemistry /'kemIstri/n.化学however /hau'eva/ adv.然而such /satj/det.这样的dirtier /'ds:tia/(原级是 dirty)adj.更脏的Read and choose.(根据文章内容,选择最佳答案)()1. What were the students doing?A. They were having...
athe students were having their chemistry class 。miss li was telling the children what water is like 。after that,she asked her students,\"what is water?\"no one spoke for a few minutes .miss li asked again,\"why do not you answer my question? did not i tell you what water is lik...
几个世纪以来汉语观察这个传统假日欢迎一个新年的初期。 并且我们永远将珍惜春节。[translate] a花房 Greenhouse[translate] a One year, the first class had been studying chemistry for several __6_ when Miss Richards suddenly asked, "What is water? Who knows? 7__ up?"[translate]...
Chemistry is the study of matter and energy and the interactions between them. This is also the definition for physics, by the way. Chemistry and physics are specializations ofphysical science.Chemistrytends to focus on the properties of substances and the interactions between different types of mat...
said Miss Li,“Our water is getting dirtier and dirtier That's a problem.Word Listchemistry ['kemustri]n.化学问smel [smel] v.嗅,闻agree [a'gri:]v.同意,赞成Choose the best answer,A,B,C or D, to these questions.()1. The students were having theirclass.A. EnglishB. ChineseC....
"What is water like?" the teacher asked her students in the chemistry class. To the teacher's surprise, no one answered her this simple question.After a few seconds, the teacher asked again, "Why don't you answer my question? Don't you remember I have told you in the class what wat...
Chemistry is the study of matter and how it changes. Matter is everything that has mass and takes up space, like the air we breathe, the water we drink, and the objects we use every day. Chemistry helps us understand what things are made of and how they interact with each other. ...
Find out about the science and chemistry of Water (dihydrogen monoxide, hydroxic acid, hydrogen hydroxide), see colourful images of Water and explore interactive 3D molecules of Water
2.1Definition2.2WhyIsGCGettingSoMuchAttention?2.3WhyShouldChemistsPursuetheGoalofGC?2.4BarrierstointroducingGC ECNU 2.1Definition GreenchemistryEnvironmentallybenignchemicalsynthesisAlternativesyntheticpathwaysforpollutionpreventionBenignbydesign AnastasandWarnerDefinition Theutilizationofasetofprinciplesthatreducesor...