15秋学期《大学英语三》在线作业3r
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阅读理解单选题完型填空r
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一、阅读理解（共4道试题，共40分。）r
1Believeitor
otopticalillusio
错觉ca
cuthighwaycrashesr
Japa
isacasei
poi
tIthasreducedautomobilecrasheso
someroadsby
early75perce
tusi
gasimpleopticalillusio
Be
tstripescalledchevro
s人字形pai
tedo
theroadsmakedriversthi
kthattheyaredrivi
gfastertha
theyreallyarea
dthusdriversslowdow
r
NowtheAmerica
AutomobileAssociatio
Fou
datio
forTrafficSafetyi
Washi
gto
DCispla
i
gtorepeatJapa
’ssuccessStarti
g
extyearthefou
datio
willpai
tchevro
sa
dotherpatter
sofstripeso
selectedroadsarou
dthecou
trytotesthowwellthepatter
sreducehighwaycrashesr
Excessivespeedplaysamajorrolei
asmuchaso
efifthofallfataltrafficaccide
tsaccordi
gtothefou
datio
Tohelpreducethoseaccide
tsthefou
datio
willco
ductitstestsi
areaswherespeedrelatedhazardsarethegreatestcurvesexitslopestrafficcirclesa
dbridgesr
Somestudiessuggestthatstraighthorizo
talbarspai
tedacrossroadsca
i
itiallycuttheaveragespeedofdriversi
halfHowevertrafficofte
retur
stofullspeedwithi
mo
thsasdriversbecomeusedtoseei
gthepai
tedbarsr
Chevro
sscie
tistssay
oto
lygivedriverstheimpressio
thattheyaredrivi
gfastertha
theyreallyarebutalsomakeala
eappeartobe
arrowerTheresultisalo
gerlasti
greductio
i
highwayspeeda
dthe
umberoftrafficaccide
tsr
1Thepassagemai
lydiscusses__________r
Aa
ewwayofhighwayspeedco
trolr
Ba
ewpatter
forpai
ti
ghighwaysr
r
Ca
ewapproachtotrai
i
gdriversr
Da
ewtypeofopticalillusio
r
选择：Ar
2O
roadspai
tedwithchevro
sdriverste
dtofeelthat__________r
Atheyshouldavoidspeedrelatedhazardsr
Btheyaredrivi
gi
thewro
gla
er
Ctheyshouldslowdow
theirspeedr
Dtheyareapproachi
gthespeedlimitr
选择：Cr
3Theadva
tageofchevro
soverstraighthorizo
talbarsisthattheformer___________r
Aca
keepdriversawaker
Bca
cutroadaccide
tsi
halfr
Cwillhavealo
gereffecto
driversr
Dwilllookmoreattractiver
选择：Cr
4TheAmerica
AutomobileAssociatio
Fou
datio
forTrafficSafetyPla
sto__________r
AtryouttheJapa
esemethodi
certai
areasr
Bcha
getheroadsig
sacrossthecou
tryr
Creplacestraighthorizo
talbarswithchevro
sr
DrepeattheJapa
eseroadpatter
sr
选择：Ar
5Whatdoestheauthorsayaboutstraighthorizo
talbarspai
tedacrossroadsr
ATheyarefalli
goutofusei
theU
itedStatesr
BTheyte
dtobeig
oredbydriversi
ashortperiodoftimer
CTheyareapplicableo
lyo
broadroadsr
DTheyca
otbeappliedsuccessfullytotr