题目内容：
Questionsarebasedonthefollowingpassage. PassageTwo
Educatinggirlsquitepossiblyyieldsahigherrateofreturnthananyotherinvestmentavailableinthedevelopingworld.Women’seducationmaybeunusualterritoryforeconomists,butenhancingwomen’scontributiontodevelopmentisactuallyasmuchaneconomicasasocialissue.Andeconomics,withitsemphasisonincentives（激励）,providesguidepoststhatpointtoanexplanationforwhysomanygirlsaredeprivedofaneducation.
Parentsinlow-incomecountriesfailtoinvestintheirdaughtersbecausetheydonotexpectthemtomakeaneconomiccontributiontothefamily:girlsgrowuponlytomarryintosomebodyelse’sfamilyandbearchildren.Girlsarethusseenaslessvaluablethanboysandartkeptathometodohouseworkwhiletheirbrothersaresenttoschool-theprophecy（预言）becomesself-fulfilling,trappingwomeninaviciouscircle（恶性循环）ofneglect.
Aneducatedmother,ontheotherhand,hasgreaterearningabilitiesoutsidethehomeandfacesanentirelydifferentsetofchoices.Sheislikelytohavefewerbuthealthierchildrenandcaninsistonthedevelopmentofallherchildren,ensuringthatherdaughtersaregivenafairchance.Theeducationofherdaughtersthenmakesitmuchmorelikelythatthenextgenerationofgirls,aswellasofboys,willbeeducatedandhealthy.Theviciouscircleisthustransformedintoavirtuouscircle.
Fewwilldisputethateducatingwomenhasgreatsocialbenefits.Butithasenormouseconomicadvantagesaswell.Mostobviously,thereisthedirecteffectofeducationonthewagesoffemaleworkers.Wages&nbs
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