阅读理解。
Batsaretheonly"flyinganimals"intheworld.Theycan'tseeverywell.Weoftenhear"asblindas
abat".Yettheyhavenotroubleflyingonthedarkestnightsandfindingtheirwaysround.Howcan
batsflyandseeatnight?Theyflybyradar(雷达).
Thebat'sradarsystem(系统)worksthesamewayastheradarinshipsandplanes.Asabatflies
throughtheairitmakesasound.Ifthesoundhitsthingsitwillcomebackandthebat'searswill
receivethemessage.Inthiswaythebatisabletoknowwherethethingsare.
Batsgooutforfoodatnight.Inthedaytimetheyhanginsomedarkplaces.Somepeoplethink
batsarebadanimals.Infacttheyareusefulanimals.
1.Wecallbats"flyinganimals"because__________.
A.theyhavetheradarsystem
B.theylookforfoodatnight
C.theyareanimalsbuttheycanfly
D.theyareusefulanimals
2.As__________batscaneasilyfindfoodonthedarkestnights.
A.theycanseeeverythingallthetime
B.theycan"hear"everythingaroundthem
C.theyhavegoodeyesight
D.theycanonlyflytotheplaceswheretheylive
3.Batsmakeasoundsothat__________.
A.theycanknowwherethethingsare
B.theycanfindtheirfriends
C.theytrytotelltheirfriendswheretheyare
D.their"food"canflytothem
4.Fromthepassageweknow__________.
A.batsarealsobirds
B.batslikesinging
C.bats'earsaremoreusefulthantheireyes
D.whatbats'favoritefoodis
5.Whichofthefollowingisthebesttitleofthepassage?
A.WhyBatsFlyatNight
B.TheFlyingAnimal
C.AnimalsorBirds
D.TheAnimalWiththeRadarSystem