题目

Whether you will be a doctor or a police officer in the future, there’s a teacher in your life. They teach you and help you know who you are? Of course, you want to thank them. Teachers’ Day is the perfect chance for students around the world to thank their teachers. The festival falls on different days in different countries. In China, Teachers’ Day is on September 10. But in the US, teachers have a whole week to celebrate. Teacher Appreciation Week is in the first full week of May every year. Kids used to bring apples for their teachers because apples are healthy. Now, they brin（2013•黄石模拟）数据5，7，8，8，9，9的众数是（　　）A．7B．8C．9D．8和9