第4题: [单项选择]The failure of the experiment to produce the expected result should alone be ______to your carelessness. A. contributed B. ascribed C. distributed D. prescribed 参考答案: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