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2019-2020年高考英语二轮复习语法填空+短文改错组合练四题组一Ⅰ.语法填空xx·四川成都高中毕业班第一次诊断性检测Over2200yearsagoChengduwasthreatenedbyfrequentfloods.LiBingtogetherwithhissondecidedtoconstructanirrigationsystemontheMinjiangRiver__1__preventflooding.__2__havingalongstudyandalotofhardworkbythelocalpeoplethegreatDujiangyanIrrigationSystemwaspleted.SincethentheChengduPlain__3__befreeoffloodingandthepeoplehavebeenlivingpeacefullyandwealthily.Itisthe__4__oldandonlysurvivingnodamirrigationsystemintheworld.Itisalso__5__wonderinthedevelopmentofChinesescience.TheprojectconsistsofthreeimportantpartsnamelyYuzuiFeishayanandBaopingkouwhichwere__6__sciencedesignedtocontrolthewaterflowoftheriversthroughouttheyear.ThereisagloriousbridgecalledtheAnlanCableBridgecrossingtheMinjiangRiveraboveYuzui__7__youcanclearlyseetheentiresystem.Thegreat__8__constructoriginallyst...。