http://www.360abc.com/audio/daodu/15y.mp3
Section15
Flying
1Weusuallyflyinaeroplane.
2Buttherearedifferentkindsofmachinesforflyingin.
3Thegeneraltermformachinesweflyinisaircraft.
4Thetypesmostpeopleusefortravelarecalledpassengeraircraft.
5Similaraeroplanesareusedfortransportinggoods.
6Thesewetermastransportaircraft.
7Helicoptersareusedbyboththemilitaryandbyprivatecitizens.
8However,someaircraftareonlyusedbythemilitary.
9Themilitaryisthearmy,navyandairforce.
10Notjusttheairforceuseaircraft.
11Mostmilitaryaircraftareusedforfightingordefense.
12Many,however,areusedfortransport.
13Theseprovidefoodetc.forthearmedforces.
14Someaircraftflyfromshipscalledaircraftcarriers.
15Evenspacerocketscanbecalledaircraft.