浙江省2013年高中英语 Unit3 Warming up课件 新人教版必修2 新人教版必修2.ppt
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1、ComputersUnit 3The development of computersObjectiveTest your knowledge of the development of computers.Words reviewvt.计算计算adj.普遍的;通用的;普遍的;通用的;宇宙的宇宙的calculateuniversalA toy?A handbag?A computer is a machine which keeps knowledge in its memory and does work on that knowledge.This knowledge is kept in
2、 symbols;it is called data.A computer usually has a monitor to show results.However,some computers can speak.These computers can be used for voice mail.What is a computer?I am very old now.I was born in China.Many people used me for calculating in the past,but now I am a bit lonely because they dont
3、 like me now.Do you know who I am?abacusRiddles(谜语谜语)I can be used for calculating.Besides,I can also be used for watching DVD,sending e-mail and communicating through the Internet.However,I am not a PC,because Im small enough for you to take me with you.Do you know who I am?laptopPDA Personal Digit
4、al AssistantI am so small in size that I can fit in your hand.I usually have a small screen usually bigger than a digital phone,however smaller than the smallest laptop,Im a great way to store telephone numbers,access the Internet,make calculations,and so on.Do you know who I am?I am very small.I ca
5、n be used for calculating.In China,a lot of students use me when solving mathematical problems.Do you know who I am?calculatorI am very big.Scientists use me to solve some mathematical problems.huge computerDo you know who I am?robotIm a machine that works automatically.I can do a wide variety of ta
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