已知函数f(x)=|log₂^x|，正实数m,n满足m<n且f(m)=f(n)，若f(x)在区间m²,n 上的最大值为2，则m,n的值分别为   (   )

—Oh, I forgot to tell you. Many children ____ (celebrate) Ann's birthday.

下列有关海啸的叙述正确的是（   ）                                                                      

下列叙述中，说天气的是 (      )