题目

Andy is the most unreasonable, pigheaded life form in the world, and he makes me so angry I could scream! Of course, I love him like a brother. I have to because he is my brother. More than that, he is my twin! That’s right. Andy and Amy (that’s me) have the same curly hair and dark eyes and equally stubborn characters. Yet, though we may look alike, on most issues we usually take completely opposite positions. If I say day, you can count on Andy to say night. Just this week, the hot topic in school was all about the PTA’S proposal (提议) to adopt a school dress principle. Ev下列关于溶液的叙述正确的是A. 将某饱和溶液降温后，其溶液的溶质质量分数可能不变B. 相同温度下，同一物质的饱和溶液所含溶质一定比不饱和溶液多C. 饱和溶液一定是浓溶液，不饱和溶液一定是稀溶液D. 一定温度下，物质的溶解度随水的量变化而变化