问题标题：
一道初二英语缺词填空Kiteflyinghasbennp()inChinaforovertwothousandyears.ScientistshavebeenI()inkitesforalongtime.Theyhaveusedthemfors()weather,andfortestingnewkindsofflyingmachines.R()theyhavedeveloped
问题描述：
一道初二英语缺词填空
Kiteflyinghasbennp()inChinaforovertwothousandyears.ScientistshavebeenI()inkitesforalongtime.Theyhaveusedthemfors()weather,andfortestingnewkindsofflyingmachines.R()theyhavedevelopedmanynewkindsofkites.Someofthesecanpullboats,orliftamane().Somecanflyl()aplane.Somekitesarer()beautifulworksofart.Mostofthemlooklikeanimalsflyinginthesky.Peopleareinterestedink(),becausekiteflyingisakindofe()andascience-notonlychildrenlikeflyingkites,evenmanyoldpeopleliketoflykites,itisf()foreveryone.
苏智勇回答：
Kiteflyinghasbenn(popular)inChinaforovertwothousandyears.Scientistshavebeen(interested)inkitesforalongtime.Theyhaveusedthemfor(seeing)weather,andfortestingnewkindso...
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