Butterflies（蝴蝶）arecommonallovertheworldbuttheonesinhotcountriesareusuallybiggerandmorebrightlycoloredthanthoseincoolercountriesandtherearemoredifferentkinds.

Usuallythemale（雄性）butterflyismorebrightlycoloredthanthefemale（雌性）.Thefemaleshavebiggerandheavierbodiessincetheycarrytheeggs.Thegaycolorsofthemalehelptoattractthefemaleandtheduller（暗淡的）colorsofthefemalemakethemlesslikelytobecaughtbyenemiesbeforetheyhavelaidtheireggs.

SomebutterflieshaveabrightpatternofcolorsontheupperSurfaceoftheirwingswhichshowwhentheyflybutwhentheyrestonatreeorleaftheyclosetheirwings.Ontheundersidesoftheirwingstherearegreenandbrownmarkingswhichlooklikethetreesorleaves.Theyarethendifficulttobeseen.ThebestexampleofthisistheDeadleafButterfly.Whenitswingsarecloseditlooksexactlylikeadeadleaf.Thereareevenmarksthatlookliketheholesinadeadleaf.Whenabirdischasing（追逐）abutterflyandthebutterflyclosesitswingsitcannotbeseen.Whenabirdseesoneandbeginstoattackitthebutterflyopensitswings.Thebirdthinksthatitseestwoeyesstaringatitandfrighteneditfliesaway.

(1)Whichofthefollowingislikelytobethemostbrightlycolored?

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A．Amaleinahotcountry.

B．Amaleinacoolcountry.

C．ADeadLeafButterflywithitswingsclosed.

D．Alargeheavybutterfly.

(2)Whatisthepurposeofthegaycolorsofamalebutterfly?

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A．Tofrightenbirdsaway.

B．Tohelptogettheattentionofthefemale.

C．Tomakeitmoredifficulttobeseen.

D．Toprotectitselffromthefemale.

(3)Femalebutterfliesaresafefromenemiesbecausethey_____.

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A．oftenlayeggsinhidingplaces

B．cannotbeseenwiththeirwingsclosed

C．arebiggerandheavierthanmalebutterflies

D．havecolorsthatarenotsobright

(4)Whenattackedbyabirdtherestingbutterflysometimeswould_____.

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A．flyawayasquicklyaspossible

B．openitsmouthtofightagainstthebird

C．closeitswingsandchaseitaway

D．openitswingsandfrightenitaway