深圳牛津版英语7Achapter3opening_class_1七年级英语课件
日期：2010-02-20 02:33
thousandsandsoonfromthe______oftheabacuscalculatingmachinesaccuratefastbeadsbottomrepresentmoderncalculatorcan________，_______，and_______canalsocalculate__________and__________addsubtractmultiplydividepercentagessquarerootWhatfeatures(特征)doeseachofthemhave?computervery__________can______________inaflash(inashorttime，tens，hundreds，quickly)powerfuldoacalculationWhatfeatures(特征)doeseachofthemhave?Whichdoyouthinkismorepowerful，Chapter3FreetalkWhatcanwedobyusingthenumbers?245×619÷35－891＋521=?CalculatingMachinesWhatfeatures(特征)doeseachofthemhave?oneofthefirst___________________________and________The_____onthewires________ones，_________，andwhichisthemostpowerful?abrain（人脑）alivingcomputer(活电脑)acomputerShakuntalaDeviVSBrainagainstComputer1HowfastcanShakuntalaDevicalculate?2HowlongdidShakuntalaDevi’sbraintaketosolvetheproblem?3Howlongdidthecomputertaketosolvetheproblem?4Whatdidpeoplehavetodotomakecomputerscalculate?ShecancaculatelikelightningIttookfifty，
查看全部