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    25．For areas that receive regular and plentiful rainfall, such detailed crop monitoringmight not be useful or ; A．economy B．economic C．economical D．economics 【查看更多】

     

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    For areas that receive regular and plentiful rainfall, such detailed crop monitoring（监测）might not be useful or     ;

           A．economy      B．economic      C．economical          D．economics

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