下列有关水的说法错误的是（）
A：自来水是混合物
B：水蒸发时水分子的体积会变大
C：降低水的硬度可用煮沸的方法
D：软水和硬水可用肥皂水区别
下列词语中划线字的注音有误的一项是（ ）
— Where was your dad at this time last night? —He was talking with my uncle I was looking for some information on the Internet.
