the treadle pump is based on a design developed in the 1970s 阅读答案

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1、Thetreadlepumpisbasedonadesigndevelopedinthe1970s阅读答案　　Thetreadlepumpisbasedonadesigndevelopedinthe1970sbyNorwegianengineerGunnarBarnes.Itcanbemadelocally.　　Thetreadlepumpiseasytobuildfrombambooorotherwoodandtwometalcylinders(圆筒)withpistons(活塞).Thepistonsgoupa

2、nddownasapersonstandsonleverdevices—treadles—andusesanaturalwalkingmotion.　　Howmanyhoursadaythepumpneedstobeoperateddependsontheseasonandhowmuchwaterisneededforcrops.Itcouldbetwohoursaday.Itcouldbesevenhoursaday.　　Smallchildrensometimesstandwiththeirparentsont

3、hetreadles.Everyoneinthefamilycantaketurnsoperatingthepump.　　TheAcumenFundisanonprofitgroupthatinvestsinbusinessprojectstofightpoverty.ItstudiedtheeffectsoftreadlepumpsintheIndianstateofUttarPradesh.UttarPradeshhasthreetreadlepumpmanufacturersandmorethansevent

4、ythreethousandpumps.　　Acumenreportedthatfamiliesusingthematemorevegetables,becausetheywereabletogrowmoretoeatandtosell.Manyofthesefamiliesalsodrankmoremilk,becausetheyboughtacowwiththeiraddedearnings.Menwithtreadlepumpsoftennolongerhavetoleavethefarmtoseekext

5、raworkincities.　　Thepumpcanalsoimproveeducation.Farmersoftenusetheirextraearningstobuybooksfortheirchildrenortopayforschooling.　　AfarmerinZambiasaidhehopedtohaveenoughmoneyinthreeyearstobuyadieselpoweredpump(柴油泵).Thenhecouldgrowmorecropsoveralargerarea.　　Butt

6、heworldeconomiccrisishashadaneffectonsomefarmers.IDEexecutivedirectorZeniaTatasayssomewhowereabletobuydieselpumpsnowdonothaveenoughmoneytobuyfuel.Sotheyareusingtheirtreadlepumpsagain.　　[语篇解读]脚踏泵因其简单、易行、实用之特点，正在世界的广大贫困地区被推广，以帮助农民脱贫致富，且已取得了显著的效果。　　1．Thetreadlepu

7、mp________.　　A.isinventedbyanAmericanengineer　　B.ismainlymadeofmetal　　C.consistsoftwocylinderswithpistons　　D.consistsoftwocylinderswithanengine　　[解析]事实细节题。根据第二段第一句可知答案为C。　　[答案]C　　2．Whatdoestheauthorwanttotellusaboutthetreadlepumpinthesecondparagraph?　　A.Itshis

8、tory.　　B.Itsworkingprinciple.　　C.Itsstructure.　　D.Itsusageandeffects.　　[解析]作者意图题。A和D显然不对，C有一定干扰性，但其不能概括第二句，介绍工作原理时，一般要同时介绍其结构，故选B。　　[答案]B　　3．Itcanbeinferredfromthepassagethat______