题目

化学与我们的生产、生活密切相关。下列说法错误的是（） A . 硅胶、熟石灰可用作食品干燥剂 B . 为预防碘缺乏症可在食盐中加入KIO3 C . 激光打印机的墨粉中含有Fe3O4 D . NaHCO3用作食品膨松剂 答案：A .I _________ you, but I didn’t think you would listen to me. A.could have told      B.must have told    C.should tell           D.might rell