水是我们生活中必不可少的一种物质,其重要性仅次于氧。(substance, next to) Water is a substance essential to our life, and comes next only to oxygen in importance.相关知识点: 试题来源: 解析 答案:Water is a substance essential to our life, and comes next only to oxygen in importance....
其他选项“serious”、“basic”和“potential”与“essential”意思不符。 因此,最接近“essential”意思的选项是A“important”。反馈 收藏
It is not really a history, and it is much more than a history, which is both fortunate and unfortunate. All this confusion will be resolved momentarily, but let us first discuss the book's substance: water.doi:10.1080/09644016.2013.769807Marcel Wissenburg...
Water H2O compound molecules liquid Methane CH4 compound molecules gas Hydrogen H2 element molecules gas Neon Ne element atoms gas *Mixtures are not 'substances' (or 'pure substances') because pure substances have a definite chemical composition, mixtures do not.See...
Free Essay: Water is the most important substance on earth, all plants, animals and humans must have water to survive. Chemically, water is a compound made...
Water is the only substance that___at___in___states of matter:___, liquid and gas. Key:A 分析:substance是单数,其后的定语从句的谓语动词也应为单数.occur应改为occurs。 参考译文:水是唯一的一种在常温下有三态——固态,液态和气态的物质。 相关知识点: 试题来源: 解析 occur ordinary temperat...
1If a substance is dissolved in water or heated, it may ___ a gas. A.give intoB.give overC.give offD.give away 2If a substance is dissolved in water or heated, it may ___ a gas. A. give intoB. give overC. give offD. give away 3If a substance is dissolved in water...
[#paragraph1]A fluid is a substance, such as a liquid or gas, in which the component particles (usually molecules) can move past one another. Fluids flow easily and conform to the shape of their containers. The geologic processes related to the movement of fluids on a planet’s surface ...
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
Water is the most common substance(物质) found on the earth,but less than 1% of the earth's water is suitable for drinking.More than 1,000,000,000people around the world survive on just over 1galon of water a day.Probebly more than 3,000,000,000people may suffer from not having eno...