"Water is made up of hydrogen and oxygen?

相关推荐

• His colleague can split water into hydrogen and oxygen when_____（place) into a bucket of water
• 英语题目.速回答1.The ___the air is from the ground ,the ___the air is ( )A higher up ;thinner B.lower ;thinner C higher up;denser 2.What gas is give off when an object is burnt ?( )A.Carbon dioxide B. Oxygen C.Hydrogen 3.Which statement is wrong ?( )A.Plants are important to life .B .Animals and man cannot live without plants .C. Plants can make food only from air and water .
• The race ____(it) was very exciting though the result lets dowm.The lady looks young,but she's____(actual) 50.Cindy was so hungry that she ate many ____(biscuit).There are all ____(type) of people in the world.Seawater is ____(main) made up of water and salt.
• 初中英语完形填空,Do you think your children are so young that they can't make a difference to the world?In fact,most parents have the same idear in their mind.But your children are truly never too to come up with great idears to change the world.This is a story of a young who made a differece to the world.Ryan Hrwljac lives in Canada.With his help,hundreds of wells(水井) have been built to fresh water for people in Africa,Central America,and India.Hetravels a
• 我想知道matter与substance在化学上意思的区别,我的书里面有这么几句"The world around us is made up of matter.Matter is anything that occupies space and has mass.Everthingwe see,touch,taste,or smell is matter.""One particular type of matter is called a substance .Iron,water and air are examples of substances."因为我觉得上面说的substance已经包含了一切物质了,我想不出matter里还可能有什么.所以可否以此解释一下matter与substance在化学上意思的区别,
• 1.During the fight,one lost a leg,another an arm,____a third was killed outright(当场）.A.including B.includedC.containing D.contained2.The water of the river _____by two feet last night.A.raised B.was raisedC.rose D.was risen3.The group of eight ______eight richest countries in the world is really powerful.A.is made up of B.made up ofc.consists of D.comsisted of4.Mary smiled ______ her mother did when she was her age.A.what B.thatC.the way D.as though5.
• 几道初三英语选择题和填空题（有关英语辅导报新世纪）1 ______the development of our shanghai ,more medical workers are needed.A against B with C at D of2 The heavy rain ______ the water level in the river .A raised B rose C put up D made3 We must do something to stop people ______down trees.A cut B to cut C cutting D cuts4 Peter was born _____the night _____ cold winter day .A in,on B in,of C on,of D at,on5 My farther works _____ other ones in the factory .A not as hard as B mor
• 1,the most of his time he _____ was what he spared from his playing time.A,made to learning B,took to learn C,took to learning D,made to learn2,Frank used to be _____ strong.bue now he's down to his last tooth.A,too much B,far from C,more than D,less than3,Although she wa convinced that they were too different to be as close as before,Helen_____the courage to call her old friends.A,picked up B,kept up C,took up D,called up4the water supply cut,earlier
• 一道英语选词填空.can, together, bad, good, rain, drop, water, move, because, everywhere What's the weather like in summer?There is a lot for_1_in summer.Rain is made of_2_in the air.There is always water in the air.Warm air has much water,which we_3_see.For example,the air in summer feels very wet. This is_4_there is water in the air.As the warm air_6_up into the sky,it cools and the water comes_6_.Water makes the clouds in the sky.When there is lots of w
• The earth"s surface is mostly__water.made from B.made of C.made up of D.made up
• 物体被黑洞吸进去后会怎么样?
• 0.5千克煤油和1.5千克煤油热值