People enjoy talking about “first”. They like to remember their first love or their first car. But not all firsts are happy ones. Few people enjoy recalling the firsts that are bad．
One of history's bad but important firsts was the first car accident. Autos were still young when it happened. The crash took place in New York City. The year was 1896. The month was May. A man was visiting the city in his new car. At the time, bicycle riders were still trying to get used to the new set of wheels on the road. No one is sure who was at fault. In any case, the bike and the car
The man on the bike injured. The driver of the car had to stay in jail and wait for the hospital report on the bicycle rider. Luckily, the rider was not killed．
Three years later, another automobile first took place. The scene was again New York City. A real estate broker named Henry Bliss stepped off a streetcar. He was hit by a passing car. Once again, no one is sure just how it happened or whose fault it was. The driver of the car was put in jail. Poor Mr. Bliss became the first person to die in a car accident.
n each accident the driver was ____.（ ）
文章第二、三段指明两个事故后均无法判断事故责任，但司机都被关入监狱等候结果。
