You’ve probably known about computers your whole life.But computers have not really been around for very long.Computers started to become popular with big companies in the 1960s.Computers didn’t become widespread in homes and schools until the 1980s.HOW DO PEOPLE USE COMPUTERS?People use computers in many ways.Stores use computers to keep track of products and check you out at the cash register.Banks use computers to send money all over the world.Computers help teachers keep track of lessons and grades.They help students do research and learn.Computers let you hook up to networks (many computers hooked together).They let you hook up to a worldwide network called the Internet.Scientists use computers to solve research problems.Engineers use computers to make cars,trucks,and airplanes.Architects use computers to design houses and other buildings.The police use computers to track down criminals.
最新问答: 既然Leave后的宾语补足语可以是副词,那么请问这句话对吗?Leave him home. 可以说“This is my a set of keys .”吗? Is there a boat in the river?用肯定和否定回答 He paid the shopkeeper some money.同意句 能量转化方式是什么?做功和热传递是改变物体内能的两种方式.事实上,自然界中所有形式的能量,相互转化的方式都不外乎是 做功 九年数学问题在△ABC中,∠ACB=90度,BC=150px,AC=200px,动点P从点A出发,沿AC方向以100px 有一天黄昏,呼呼的北风怒号着,天色十分黯淡.(运用的是什么描写) 已知a,b,c是三角形BC三边的长,二次函数y=(a+b)x2+2cx-(a-b),当x= —1/ 2时,函数有最小值— 虚拟语态if i were rich,i would buy a downtown house.为什么用were (2013•江苏模拟)下表表示某真核生物酶X的基因,当其序列的一个碱基被另一碱基替换后的假设性蛋白质产物(用甲、乙、丙、 Salt____(taste)salty. 计算:(1又4/5)-5/6+7/10-8/15)乘(-30) I don't know what can i do for you but I Love 有两个空的玻璃容器.圆锥的底面直径是10厘米,高是12厘米;圆柱的底面直径是10厘米,高是12厘米,.在圆锥形容器里注满 (2009•静宁县)用简便方法计算. 阅读下面下段材料,从中探究出你获得的启示。 鸟 英语怎么读? 形容人坚强的诗句有哪些? 某成年男子是一种致病基因的携带者,他下列那种细胞可能不含致病基因( ) 铁为何与二价铁离子能共存?
相关问答: 跪求