完形填空

     There is a saying, “No sports, no life.” Sports are very important to us. Sports help us to stay  1  and get good grades. Everyone in our class   2  sports. Our favourite  3  is PE. We only have PE lessons  4  a week, but we play sports every day. The most popular sport in our class is basketball. The boys enjoy  5  it, and many of the  6  like it, too. Another popular sport is football and there   7  a lot of football fans (球迷) in ourclass. When the weather is 8 , we often play ping-pong outside.We hardly ever (几乎不) play volleyball. We think it's  9. We have a basketball team. Our team often has friendship (友谊) matches (比赛) with teams from other schools. When there is a match, many of us go to  10  it. It's very interesting.

—　　　　gloves are these?

—Sorry. I do'nt know.

汽车驾驶员从发现情况到采取制动所需要的时间叫反应时间，一辆汽车在平直公路上匀速行驶的过程中，若驾驶员发现前方70m处有障碍物，采取制动后，汽车行驶60m刚好停在障碍物前，已知该驾驶员的反应时间为0.5s，则制动前汽车行驶速度为____ m/s，由此，请你对安全驾车提一条合理建议：____ ．