某同学做“测定小灯泡的功率”实验，他正确连接好电路，闭合开关时记录了第1组数据，当小灯正常发光时记录了第2组数据，把滑片移到端点时小灯闪亮一下，后熄灭，并记录了第3组数据，如表所示．则下列判断错误的是（　　）

阅读短文，根据短文判断正误，用T或F表示。

A

The Marathon

The marathon is the longest race at the Olympics. You have to be a very strong runner to win the marathon.

The marathon is 42.195 km long. Why is it 42.195 km and not 43? The 1908 Olympics was in London. The King of England wanted his children to watch the marathon so the race started at the gate of his palace. From there to the finish line was 42.195 km.

One of the best marathon runners was Abebe Bikila. He was from Ethiopia. He won the gold medal in the marathon at the 1960 Olympics. He ran the whole race without shoes on!