题目

生活离不开水，净化水的知识在日常生活中有着广泛的应用。(1)自制净水器中常加入        ，用于除去水中的色素和异味。(2)井水中含有较多的钙、镁离子，为降低硬度，可采用的方法是              答案：活性炭 蒸馏解析:略—Just tell me ________.—I had eggs and some milk.A. what you had for breakfastB. what did you have for breakfastC. when you had breakfastD. when did you have breakfast