John’s day
John is a Canadian. He lives in a tall building in the city of Toronto. There are eighteen floors in the building, and he lives on the fifteenth floor. He uses a lift to go up and down.
John works very hard. He goes to work early. Every day he leaves his home and walks to the lift.He gets into the lift. It takes him down to the first floor.
He gets out of the lift. Then he walks to a bus stop. The bus stop is in front of a station. It is about two hundred metres from his home.
Usually, he catches the number 11 bus to work, but sometimes he goes by train. John works in a factory about ten kilometres from his home, His work starts at half past eight, and finishes at a quarter to five. He gets back home at a quarter past five. He gets into the lift, and goes up to the twelfth floor. Then he gets out of the lift and climbs up to the fifteenth floor on foot.
Every day he does the same thing. Why doesn’t he use the lift for the last three floors?

约翰的一天

约翰是一个加拿大人。他住在多伦多市的一座高楼里，这座楼有18层，他住在15楼。他坐电梯上上下下。

约翰工作十分辛苦。他上班去得早。每天他离开他的家后都走去坐电梯。他进入电梯。电梯把他送至一楼。

然后他走出电梯。接着走到一个公共汽车站。那公共汽车站在一座火车站前面。这里离他家大约有200米。

一般情况下，他乘11路巴士去工作，但有时候他也坐火车。约翰工作的工厂距他家约10公里，他8时30分开始工作，4时45分下班。他回到家的时间是5点15分。他进入电梯，并上升到了第12楼。然后他走出电梯，再徒步爬上15楼。

他每天都这样。最后三层他为什么不使用电梯？