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问题详情： AccordingtoaUNreport,onethirdoftheworldpopulationhaveno________tocleandrinkingwaterandhealthcare.  A.means             B.approach                C.channel  ...

问题详情： AccordingtoaUNreport,cleandrinkingwaterandhealthcarearenotto30percentoftheworldpopulation.A.sensible                           B.responsibleC.accessible     ...