在圆中画一个与这个圆等半径，圆心角是60度的扇形。圆内其余部分面积是这个扇形面积的几倍( )
A．4倍
B．5倍
C．6倍
D．7倍
参考答案：B
— ________ have you become so good at English this term ?
—By studying grammar and reading English novels.
A．When
B．What
C．How
D．Who
562×3＞1200．______．
