题目

实验室中，从海带中提取I2的实验流程如图所示，下列说法不正确的是（ ）​ A . 操作①用到的玻璃仪器有：烧杯、玻璃棒、漏斗 B . 操作②中需加入氧化剂 C . 可以用四氯化碳或酒精代替苯作萃取剂 D . 蒸馏I2的苯溶液可获取I2并回收苯 答案：C—Excuse me. Is your watch on the desk?—________. It's on the sofa.A. Yes, it is B. Yes, they are C. No, it isn't D. No, they aren't