单选题 阅读下面短文，请从短文后所给各题的4个选项（A、B、C、D）中选出1个最佳选项，并在答题卡相应位置上将该项涂黑。
While you’re in a lift, waiting to reach your floor do you ever wonder who came up with the idea? Probably not.We just expect to have safe lifts in buildings.
Lifts existed as far back as ancient Rome.But the ancient “lifts” weren’t closed cars.They were simple platforms.They were typically used to raise up water for farming or lift heavy building materials such as stones.These lifts were powered by animals, people or even water wheels.
The first modem passenger lift was built for King Louis XV in 1743.The King’s lift was installed (安装) on the outside of his palace.It went from the first to the second floor.The King entered it from his balcony, and then men raised and lowered the lift through the use of ropes and wheels.
Lifts became more common in the mid-1800s during the Indusdivial Revolution when they divansported goods in factories and mines.These lifts were often based on a hydraulic (液压的) system.However, this type of lifts was impractical for tall buildings, although it became popular because it could operate with the public water system.
Another lift design (and the one found most often today in passenger lifts) uses a cable system, in which ropes raise and lower the car by means of a wheel and gear (齿轮) system.These types of lifts are easier to condivol, and buildings that have them do not need the exdiva room required by hydraulic systems.By the 1850s, these types of lifts had been powered by water pressure or steam.The first modem passenger lift was _____.