Thefortyyearsfromthe1930stothe

问题：

根据材料，完成下面的题目。
AirTransportation
1.Airplanesareusedtocarrypassengers,cargoandmail.Airtransportcompaniesoperatescheduledairlinesandnon-scheduledservicesoverlocal,regional,national,andinternationalroutes.Theaircraftoperatedbythesecompaniesrangefromsmallsingle-engineplanestolargemultienginejettransports.
2.Thefirstairpassengerservicesbeganin1910,whendirigiblesbeganoperationbetweenseveralGermancities.ThefirstscheduledairplaneservicetocarrypassengersbeganintheU.Sin1914.SeveralexperimentalairmailflightstookplaceinIndia,Europe,andtheUnitedStatesbeforeWorldWarI,butairtransportservicedidnotbecomeatruebusinessuntilafterthewar.
3.DuringWorldWarTwo,intercontinentalairtransportbecamefirmlyestablished.Afterthewarthenewlong-distancetransportswithadvancedfacilitieswereincreasinglyabletoavoidstormsandstrongwindandmakeflightsmoreeconomicalandconsistent.Anewgenerationof"jumbo-jet"transportsbeganoperationsin1970,andthesupersonictransportenteredpassengerservicein1976.
4.Duringthe1970sthenumberofdomesticpassengersonU.Sairlinesincreasedabout78%,andduringthe1980sthefigurewasupabout58%.In1990therewere41.8millioninternationalpassengers,thefigurewasa75%increaseover1980.ThetotalcargoflownbyU.Sairlinesalmostdoubledduringthe1980s,from5.7billionto10.6billionton-milesin1990.
5.Majorairportsprovideawiderangeoffacilitiesfortheconvenienceofmillionsoftravelers.Theserangefromsuchbasicservicesasticket-salescountersandrestaurantstoluxuryhotels,shoppingcentersandplayareasforchildren.Internationalairportsmustalsohavecustomsareasandcurrencyexchangecountersandsoon.
Paragraph2__________.

A.inthedevelopmentofairtransportation
B.theearliestpassengerflightsweresuccessfullyoperated
C.tomaketraveleasyandpleasantforthepassengers
D.toprovidedifferentservices
E.theshortageofqualifiedpilots
F.travelingbyairwasverycheap

参考答案：D

参考解析：

【答案】D
【解析】从第三段可知，在19世纪30年代到70年代，出现了国际航班，远距离运输服务，以及新一代“喷气机”运输和超音速运输服务，由此可知，这一时期开始提供多种不同类型的运输服务。所以本题选D。