根据短文理解，完成各题任务。
C
    Sally is an English girl. She is my English teacher, Mrs. Brown's daughter. She is only five years old. (A)She can't go to school. She likes playing ping-pong.
    Her favorite ping-pong player is Zhang Yining. Sally is in the ping-pong club. She goes to the ping-pong club every day. She plays ping-pong for two hours there.
    Sally has a sister. Her name is Maria. She is in our class. She likes running. She runs with her mother every morning. (B)她最喜欢的赛跑明星是刘翔. Maria says she wants to be a running star like Liu Xiang.

如图，正方体ABCD﹣A₁B₁C₁D₁绕其体对角线BD₁旋转θ之后与其自身重合，则θ的值可以是（   ）

—George, ___   _ you sing so loudly at such a late hour?
—I am terribly sorry．

下列公共标语，表达不太好的一项是（    ）

一辆公共汽车进站后开始刹车，做匀减速直线运动．开始刹车后的第1 s内和第2 s内位移大小依次为9 m和7 m，则刹车后6 s内的位移是