单选题 The failure of the experiment to produce the expected result should alone be ______to your carelessness.
【正确答案】 B
【答案解析】[解析] ascribe…to或be ascribed to归因于；contribute作贡献，contribute to有利于……；distribute分配；prescribe开药方。A选项因果关系倒置，不对。故选B。