根据短文内容，选择正确答案。

    These days, more and more people begin to pay more attention to their health. They want to take up different kinds of sports to keep healthy. What sports should they do then?

    Tennis

    Thomas opened up a tennis room recently. To his surprise, there were much more people than he expected(预想) coming on the first day. Because no more room was available(可利用的), he had to rent(租借) another bigger room from his neighbour, but it still couldn't meet the need. "I am pleased to see so many people like playing tennis. It is a very good sport for health," said Thomas.

    Football

    Donna works in a bookstore. She often goes to play football in the middle school near the bookstore. "Although the students are having their summer holidays, to my surprise, the playground is crowded with people," said Donna.   

    Of course, there are some other sports that people can do to keep healthy. But it's certain(确定的) that people who often exercise can work better.

阅读材料，完成下列问题。

材料一：图l为我国西南部分地区略图。图2为2014年重庆工业结构图。

材料二：成都和重庆是成渝城市群两大核心城市，成都电子信息产业发达，重庆工业基础雄厚。汽车为两城市支柱产业，成都以客车、商用车、轿车生产为主，重庆以重型汽车和轿车生产为主。在十三五规划中，两城市都把中高档轿车、新能源汽车和智能汽车作为发展重点。