____ ____
方程x2﹣2x﹣a=0的一个根是﹣1,则a=____,另一个根是____.
We read English at 8:00 a.m. Then our first lesson____ (begin) at 8: 25 a.m.
若函数f(x)=(a2﹣3a+3)•ax是指数函数,试确定函数y=loga(x+1)在区间(0,3)上的值域.
I think basketball is _______. I like to watch it.
青藏地区主要的农作物有( )