题目

以玉米(主要成分是淀粉)为原料制备乙醇的流程如下：下列说法中错误的是（） A . C12H22O11属于二糖 B . 可采取分液的方法分离乙醇和水 C . 可用碘水检验淀粉是否完全水解 D . 葡萄糖可以在酒曲酶作用下分解生成乙醇 答案：BOur English teacher is wearing a gold watch, ________are made of small diamondsA. whose the hands B. of which hands C. the hands of which D．the hands of whom