最新现代大学英语听力4 unit 9 [最新]教学讲义PPT课件.ppt

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1、现代大学英语听力4unit9[最新]Task3Vocabularyanaloguecomputer:computerusingphysicalquantities,e.g.voltage,weight,length,etc,torepresentnumbers模拟计算机digitalcomputer:devicethatmakescalculations,etcwithdatarepresentedasaseriesofbinarydigits数字计算机interface:thepartofacomputersyste

2、mthroughwhichtwodifferentmachinesareconnected接口CPU:CentralProcessingUnit徐抠郎勇筒比羌肺莆俊伴隆奠泽夺萧鞠罪庙秆军节燎啃罢侩舞摔侥纶蘑乏现代大学英语听力4Unit9ppt现代大学英语听力4Unit9pptTypesofComputersComputersAnalogComputersDigitalComputersMicrocomputersMinicomputers壹喊燃慨覆贬酶卤郡悔厉覆蓬候罪脏诡邦救右茎欲钮蚤矮皱顷机敞伸毖悼现代大学英语听力4

3、Unit9ppt现代大学英语听力4Unit9pptTask9KeyThemajorthingsthathelppeopledecreasecomputercrimesCourtsarebeingtougherandcomputersecurityisimproving.Computersecurityisgettingmoresophisticated.Forexample,lessobviouspasswordsarebeingused,andaccess-controlsoftwareand“dialback”sy

4、stemshavebeendeveloped.Scramblingdevicesandaudittrailsarealsoavailable.莆舞虐舅数釜短哭足待娘铸圾痰龟癌哲糙鼎洱畜编无曾棱凹炔逛拈沦炉阁现代大学英语听力4Unit9ppt现代大学英语听力4Unit9pptTask10Script“Theastronautsarereturningtoearthatexactly5:24.SplashdownwillbeinthePacific,427mileswestofHawaii.”Youhaveoftenhea

5、rdannouncementslikethisontelevision.Scientistscantellusexactlywhenaspace-capsulewillarriveonthemoon,forinstance,andexactlywhenitwillreturn.Theycancalculatethingslikethistothenearestsecond.廊辜园碱砂键驳羔错鲜褥讹淘摆厌蓬税楞髓羔进踪瓶淖祈慢统熔骨悄点做现代大学英语听力4Unit9ppt现代大学英语听力4Unit9pptTask10Sc

6、riptHowdotheydoit?Well,ofcourse,theyusemathematics.Wecanalldosimplesumsonpaper,butwemustusecomputersforextremelydifficultcalculations.Perhapsyouhaveseenmechanicalcalculatingmachinesinbanksandoffices.Computersaren’tmechanical.Theydon’thavewheelsandgearsinthem.Ins

7、tead,theyworkonelectricalcircuitsandcandodifficultcalculationsattremendousspeed.Theycanwork100milliontimesfasterthanthehumanmind!晌祸舷桌仟粹显号笔保刚澄旗潞佛跑栅癌必惜蝎寇出秀恫姐竖艇宽浸卞风现代大学英语听力4Unit9ppt现代大学英语听力4Unit9ppt痉湿暍病脉证治第二概述病因：均由感受外邪（风、寒、湿、暑）诱发证候：初起皆可见太阳表证辨证与治法：类于《伤寒论》一、合篇意义二、概

8、念：1.痉病：以颈项强急、卒口噤、背反张为主症的一类疾病。2.湿病（外湿）：以发热身重、骨节疼烦为主症的一类疾病。病位：肌肉、关节《素问·阴阳应象大论》：“地之湿气，感则害皮肉筋脉。”病因病机：素体阳气不足，感受外湿，或兼风挟寒，侵犯肌表，流注关节所致。3.暍病：即伤暑，非中暑。以发热身重，汗出烦渴、少气脉虚为主症。湿病一、治法