关于x的一元二次方程x2-x+14m=0有两个不相等的实数根,则实数m的取值范围是( )
What will you_____ about the topic “How to learn English well” at the meeting tomorrow?
you are.
下列是对一枚一元硬币的有关物理量进行估测,你认为合理的是( )