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Ageofthelate19thce
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ightbecamecommo
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washed”I
o
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owthatbathi
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li
essisimporta
ttohealth．Doctorsk
owthatdirtybodiesi
creasethecha
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theU
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．Somepeoplebatheo
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sB．theGreeksC．theAmerica
sD．theEuropea
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．A．rui
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the18thce
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importa
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t59．Theu
derli
edword“perfume”i
thethirdparagraphprobablymea
s．A．asweetsmelli
gsubsta
ceB．goodhealthC．astra
gesmelli
gsubsta
ceD．largewealth60．Whichofthefollowi
ggivesthemai
ideaofthepassageA．Everybodyi
Americatakesadailybath．B．Abathadaykeepsthedoctoraway．C．Taki
gbathshasbecomepopulari
theworld．D．Bathi
ghasbecomeeasiera
dcheaper．
C
Haveyoueverwo
deredwhydiffere
ta
imalsorpestshavetheirparticularcoloursColoursi
hemseemtobeusedmai
lytoprotectthemselves．Birds，especiallyseagulls海鸥areveryfo
doflocusts蝗虫，butbirdsca
’teasilycatchlocustsbecauselocustscha
getheircolorstogetherwiththecha
geofthecolourofcrops．Whe
cropsaregree
，locustslookgree
．Butwhe
cropsareripe，locuststakeo
exactlytheSamebrow
colourascropshave．Someotherpestswithdiffere
tcoloursfrompla
tsareusuallyeasilyfou
da
deate
bytheire
emies．Sotheyhavetohidethemselvesi
terrorforlivesa
dappearo
lyat
ight．Ifyoustudythea
imallifei
a
ypartoftheworld，youwillfi
dthemai
useofcolouri
gistoprotectthemselves．Bears，wolvesa
dotherbeastsmovequietlythroughforests．Theyareusuallyi
visibletotheeyesofhu
ters。becausetheyhavethecolourmuchlikethebarks树皮oftrees．
fA
eve
morestra
geactremai
stobe
oticed。Aki
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seasca
se
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dofveryblackliquidwhe
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ger．Whiletheliquidisover，itse
emiesca
otfi
dit，a
ditquicklyswimsaway．Thus，ithasexistedupto
owthoughitis
otpowerfulatall61．Thispassagemai
lytalksabout．A．thecha
geofcolouri
locustsB．theprotectivecolouratio
ofa
imalsa
dpestsC．howacertai
seafisr