题目The atmosphere protects the earth. What is the atmosphere made of? A. Gas and dust B. Water and fire C. Earth and moon D. Stars and gas 相关知识点: 试题来源: 解析 A。本题考查对大气层组成的了解,大气层由气体和尘埃组成。B 选项水和火不对;C 选项地球和月亮不对;D 选项星星和气体...
题目The universe is very big. What is the universe made of? A. stars and planets B. gas and dust C. matter and energy D. water and air 相关知识点: 试题来源: 解析 C。宇宙是由物质和能量组成的,“matter and energy”是“物质和能量”。“stars and planets”是“星星和行星”,“gas and ...
The stars are made of gas and dust. What are the stars made of? A. Rock and metal. B. Water and ice. C. Gas and dust. D. Trees and grass. 相关知识点: 试题来源: 解析 C。星星是由气体和尘埃组成的。选项 A 岩石和金属错误;选项 B 水和冰错误;选项 D 树和草错误。
【题目】T he sky was filled with gas gave off light like the sun.A、whenB、whereC、whatD、that 答案 【解析】宾语从句的概念:置于动词、介词等词性后面起宾语作用的从句叫宾语从句。宾语从句的语序必须是陈述语序。谓语动词、介词、动词不定式,v.-ing形式后面都能带宾语从句。有些形容词(afraid,sure,gl...
The atmosphere is made up of different gases. What is the most abundant gas in the atmosphere? A. Oxygen B. Nitrogen C. Carbon dioxide D. Hydrogen 相关知识点: 试题来源: 解析 B。解析:大气中含量最多的气体是氮气。A 选项氧气含量次之;C 选项二氧化碳含量较少;D 选项氢气含量极少。 反馈 收...
Plasma is the fourth, most energetic, state of matter. Heat up ice (solid), and it melts into water (liquid). Keep heating it, and it changes again into water vapor (gas). If you keep heating that gas, though, it will become plasma. Plasma is a cloud of atoms, like a gas, but...
结果1 题目The glass is made of silica. What is glass? A. A liquid B. A gas C. A solid D. A powder 相关知识点: 试题来源: 解析 C。玻璃是由硅石制成的,玻璃是固体。选项 A 液体错误;选项 B 气体错误;选项 D 粉末错误。反馈 收藏 ...
每个修饰可数名词单数eg:Eachstudenthasadictionary. eachpron.每个,各个a.单独使用eg:Eachhastwoapples.b.eachof+复数名词/代词,谓语用单数eg:Eachofthestudents/ushasadictionary.c.放在主语后作同位语,谓语用复数eg:We/Thestudentseachhaveadictionary.d.eachadv.每,每个常放在动词之后或句末eg:Thetichetsaretenyuan...
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energysectorbyasmuchas85percentbyreplacinggasandcoalwithcleanelectricity.Otherparts oftheeconomy,suchasshippingandproducing,arehardertoelectrifybecausetheyoftenrequire fuelthatishighinenergydensity(密度)orheatathightemperatures.Greenhydrogenhas potentialinthesesectors.TheEnergyTransitionsCommission,anindustrygroup,saysgr...