![Wouldyouliketospendyourvacationtravelingbyballoon（气球）？T...]( "Wouldyouliketospendyourvacationtravelingbyballoon（气球）？T...")
- 问题详情：Wouldyouliketospendyourvacationtravelingbyballoon（气球）？ThefirstballoontriptookplaceinFrancein1783.Itlastedonlyeightminutes. AboutayearlaterAmericanandaFrenchmandecidedtocrossthechannel.(海峡)Theydiscoveredaholeintheballoongrewbiggerandbigger...
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