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...
The sun is a star. It gives us light and heat. Without the sun, life on Earth would not be possible. What is the sun mainly made of? A. Hydrogen and helium. B. Oxygen and nitrogen. C. Carbon and oxygen. D. Water and air. ...
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...
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...
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...
OWater is made up of oxygen and hydrogen.水由氧和氢构成。Your belt should be made D leather,for it fecls soft and smooth. A.in B.on C.for D. of 相关知识点: 试题来源: 解析 答案见上解析 考查介词。 句意:你的腰带应该是皮革制成的, 因为它摸起来柔软光滑。 be made in意为“在… …...
The Earth's atmosphere is made up mainly of ___. A. nitrogen and oxygen B. carbon dioxide and oxygen C. nitrogen and carbon D. ioxide 相关知识点: 试题来源: 解析 A。地球的大气层主要由氮气和氧气(nitrogen and oxygen)组成。反馈 收藏 ...
Clean air is made up of only nitrogen, oxygen, and water. As we have industrialized, our cities have grown and traffic has increased. With these development there has come an increase in the number of by-products released into the air, such as particles(细粒)from burning fuels and poisonous...
Beijing has made rapid progress and it has already succeeded in hosting the 2008 Olympic Games. I think it is important to remember the past, live in the present and dream about the future. 我是康康。为了这份报告,我采访过我的奶奶。她已经在北京...
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.1They must have water, oxygen, sugar, sodium...