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II阅读理解（每小题2分，共15小题，30分）A
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owyourlocatio
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ase
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2000Chi
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Africaa
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gtheBeidousystem
fWithitsworldleadi
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esecitize
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Chi
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avigatio
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avigatio
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Howma
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umberofsatellitesisimporta
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gisHerearetheamou
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gsat
avsystemsBeidouChi
a35GPSUS31GLONASSRussia24GalileoEuropea
U
io
22
21Whatdomapappsdepe
do
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dauser’slocatio

Asatellites
BcomputersCreceivers
Dsmartpho
es
22Whichcou
trybuilttheworld’sseco
dsat
avsystem
ATheUS
BJapa

CChi
a
DRussia
23Whatdowek
owabouttheBeidousystem
AItsfirstgroupofsatelliteswasse
ti
tospacei
2001
BItoffersservicestoothercou
tries
CThe
umberofsatellitesitusesisthesameasGPS
DIthasbecometheworld’sbestsat
avsystem
24Whatdothelasttwoparagraphstellus
fAWhymostvehiclesareusi
gtheBeidousystemBHowBeidouwillimproveservicequalityatairportsCHowtheBeidousystemisbei
gusedDWhowillbei
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usi
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aChi
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Va
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