根据句意和首字母提示，完成短文。

    My school is on Zhongyang S____. It is only about half an h____ on foot from my home. And if I r____ there, it takes l____than ten minutes. Every morning, I go along Zhongshan Road by bike and take the second turning on the left. It's not f____, so I don't have to get up too e____. Sometimes when it rains, I take a bus to school. I get off at the bus s____. It's just n____ to our school gate.

    It's good to live near the school. But there is a p____. There is usually too much t raffic in the afternoon. And I hate w____ for a long time on my way home.

90÷____0＞3

____、____0÷50＜4

如图，OA，OB，OC是圆的三条半径．

（1）若他们的圆心角度数比为1：2：3，求这三个扇形的圆心角的度数．

（2）在（1）的条件下，若圆的半径为2cm，求这三个扇形的面积．（保留π）

__________ Liu Wei has no hands, he can play the piano very beautifully.