Sittingatadeskinaclassroomalldaycanbeprettyboring．TheteachersatWardElementaryinWinston-Salem，NorthCarolina，pickeduponthatandtradedintheirstudents#39;desksforexercisebikesasapartoftheirReadandRideprogr

问题：Sittingatadeskinaclassroomalldaycanbeprettyboring．TheteachersatWardElementaryinWinston-Salem，NorthCarolina，pickeduponthatandtradedintheirstudents#39;desksforexercisebikesasapartoftheirReadandRideprogram!TheR

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刘翠敏的回答：

网友采纳　　21．C推断题，通读全文，并根据第五段校长的话Ridingexercisebikesmakesreadingfunformanykidswhogetfrustrated（挫败的）whentheyread可知选C．&nb...