﹣Tom, do you know____?
﹣In Beijing.( )
A.where will the 24th Winter Olympics be held
B.where the 24th Winter Olympics will hold
C.where the 24th Winter Olympics will be held
D.where will the 24th Winter Olympics hold
如果实数,满足约束条件,则的最大值为()
是椭圆的两焦点,过的直线交椭圆于、两点,若, 则()
使不等式成立的一个必要不充分条件是()
双曲线的离心率为,则的值是()
若的否命题是命题的逆否命题,则命题是命题的()