He is stone deaf.Watch out! There’s a car coming!The policeman followed the thief into s supermarket.I moved here when I was five. It seems that they are on the playground.
函数的反函数是()
在四边形ABCD中,,,则四边形的面积为( )
“”是“”的()
圆在点处的切线方程为 ()
设(是虚数单位),则复数对应的点位于()