求这篇英语完形填空答案
Haveyoueverseenkites?Perhaps,youhave.What’smore,youmayhaveplayed_____1_____kites.Butdoyouknowthatkitesarenotjustplaythings?Theycanbevery_____2_____.Scientistshavebeeninterestedinkitesforalongtime.Theyhaveusedthemforstudying_____3_____anddoingmanyotherthings.Recentlytheyhavemadesomenewkites.Thesekitescan_____4_____boats.Theycanliftamaneasily.Somekitesare_____5_____beautiful.Peopleareinterestedinkites_____6_____theyarenotonlybeautiful,butalsohelpful.Andkiteflyingisgreatfun.
1.A.atB.withC.forD.on
2.A.usualB.uselessC.usefulD.unusual
3.A.weatherB.treesC.birdsD.animals
4.A.pullB.pushC.carryD.take
5.A.seldomB.neverC.realD.really
6.A.becauseB.butC.andD.for