A:甲的溶解度大于乙
B:t1℃时,甲乙饱和溶液中溶质质量相等
C:t2℃时,将10g甲加入50g水中,得到60g饱和溶液
D:将t3℃时的甲乙饱和溶液降温到t1℃,甲乙溶液中溶质质量分数相等
— Sorry, I didn't pass the exam, and then what should I do?
—I think perhaps you should be careful next time.
如果二次函数y=x2+mx+(m+3)有两个不同的零点,则m的取值范围是( )