The sun is mainly made up of ___. A. oxygen and nitrogen B. hydrogen and helium C. carbon dioxide and water vapor D. iron and nickel 相关知识点: 试题来源: 解析 B。太阳主要由氢和氦组成。“oxygen and nitrogen”是氧气和氮气,“hydrogen and helium”是氢和氦,“carbon dioxide and water...
解析 【答案】oxygen【核心短语/词汇】oxygen:氧【翻译】水是由氢和氧组成的。【解析】be made up of:由……组成。句意:水是由氢和___组成的。根据常识,水是由氢和氧两种元素组成的。氧:oxygen,是不可数名词,不用变形,故答案为:oxygen。 反馈
The sun is made ofgas and plasma. Most of the gas — 92% — is hydrogen. If the sun were smaller, it would just be a huge ball of hydrogen akin toJupiter. According to NASA Space Place, the hydrogen in the sun's core is held together by a lot ofgravityresulting in high pressure...
A gas is any substance that is neither liquid nor solid, for example oxygen or hydrogen. 气体 Be made of这个句型,在日常生活中多使用,孩子就学会了。 比如: What is the table made of? 桌子由什么制造的? ——The table is made of wood. 桌子是由木头制造的。 What is this book made of? 书...
theremainingmass). Thesunwaspersonifiedinmanymyths:theancientgreekscalled itHelios,andtheRomanscalleditSol. Thesun'smassismadeupof75percenthydrogenand25percent helium(92.1percenthydrogen,7.8percenthelium);Thetotal numberofothersubstances("metals")isonly0.1percent. ...
“Hydrogen” is made up of “hydro-” and “-gen”. “hydro-” means “water” and “-gen” means
Water is ___of oxygen and hydrogen.A. made up B. consist C. comprised D. composed 相关知识点: 试题来源: 解析 D 本题考察动词词组。这个句子的意思是:水是由氧气和氢气组成的。这四个选项都有“组成”的意思。D项强调由什么成分构成,因此是最佳答案。bemade up of泛指“由⋯⋯构成”,consist ...
Rolla - July 17, 2002 - For years, scientists have assumed that the sun is an enormous mass of hydrogen. But in a poster presentation to be delivered July 21-26 at the Meteoritical Society's annual meeting in Los Angeles, Dr. Oliver Manuel says iron, no
Recall that all living things are made up of tiny units called cells, and that -cells are surrounded by a covering called a membrane (膜).The membrane allows things to move in and out of the cell, and it also controls what can get through. 1 They must have water, oxygen, sugar, sod...
第1题 The two elements water is made are oxygen and hydrogen.A、that B、which C、of which D、with which 第2题 The crime was discovered till 48 hours later,gave the criminal plenty of time to get away.A、which B、that C、so D、what 第3题 The International Studies University,in 1951...