2013年8月,公安部部署全国公安机关集中开展了打击网络有组织造谣传谣等违法犯罪专项行动。截止到8月底,浙江省公安厅已清理网上违法信息21.1万余条,其中网络谣言和虚假信息1.82万余条,查处网络造谣等违法犯罪67起,刑拘2人,治安处罚46人;关闭违法的网站、栏目、网店1 978家,有力震慑了网络违法犯罪活动,维护了健康有序的网络环境和社会秩序。

阅读材料,思考回答下列问题: 

    It's Sunday morning. There are many people in the park, some boys are playing basketball. There are some girls under a big tree. They're singing and dancing. What are those women doing? They are drinking tea. Look at the woman in a blue coat. Who's she? She's my mother. She is talking to Edward. Edward is her student. He is a good student. He studies hard. He's good at all the subjects. And he's friendly to all his teachers and his friends.

已知有理数a、b、c在数轴上对应的位置如图所示，那么下列式子错误的是（    ）

—Talking on WeChat       .people's way of communicating in the recent few years.