— ?
—John Brown.
A:What's this
B:How old are you
C:What's your name
D:How are you
一元二次方程x2=3的根是____ .
某政府机关平时办事拖拉,经市电视台的新闻节目曝光后,迅速整顿机关作风,提高了办事效率。这种监督方式属于( )