题目

由乙醇制取乙酸的方法与过程可表述如下：C2H5OH CH3CHO CH3COOH，请用上述表述方法表示 的方法与过程：． 答案：【1】 {#mathml#}→△铜、氧气{#/mathml#} {#mathml#}→△铜、氧气{#/mathml#} {#mathml#}→△氢氧化钠溶液{#/mathml#} {#mathml#}→H+{#/mathml#}  Nothing__________ after the terrible fire which had been caused by someone smoking in bed. A. left     B. was remained    C. remained     D. continued