Academic Reading: 2
The History of the Bicycle
The bicycle is such a common form of transport today that it is easy to forget it took many decades to develop into the machine people now recognize. The earliest ancestor of the modern bicycle appeared in Germany around 1817, when an inventor named Karl von Drais built a wooden machine with two wheels. Riders sat on this machine and pushed it forward with their feet, since it had no pedals at all. Because of this walking motion, the machine became known informally as the running machine.
Pedals were not added until the 1860s, when French inventors attached them directly to the front wheel of the bicycle. This design, often called the boneshaker, allowed riders to move faster without touching the ground, but the wooden and metal wheels had no rubber tyres, so riding on rough roads was uncomfortable. To go faster, some designers made the front wheel much larger than the back wheel, since a bigger wheel could travel farther with each turn of the pedals. This produced the tall bicycles now remembered as penny-farthings, which were fast but dangerous to ride.
A major improvement came in the 1880s with the invention of the safety bicycle. This new design used two wheels of equal size and introduced a chain that connected the pedals to the rear wheel, so riders no longer needed a giant front wheel for speed. The safety bicycle was much easier to balance and far less likely to cause serious injury when a rider fell. Soon afterward, air-filled rubber tyres, invented by John Boyd Dunlop in 1888, made rides noticeably smoother and more comfortable than ever before.
By the end of the nineteenth century, bicycles similar to those used today had become extremely popular across Europe and North America. They were affordable for ordinary workers, unlike expensive carriages or early automobiles, and they gave many people, including women, a new sense of independent mobility. For this reason, some historians argue that the bicycle played an important role in changing social habits, well beyond its practical use as a simple mode of transport.
練習問題
According to the passage, what was unusual about the earliest bicycle-like machine built by Karl von Drais?
- It had no pedals, and riders pushed it forward with their feet
- It had a chain connecting to the rear wheel
- It had rubber tyres for extra comfort
- It had pedals attached to the front wheel
According to the passage, why did some designers make the front wheel of a penny-farthing much larger than the back wheel?
- Because a bigger wheel could travel farther with each turn of the pedals
- To make riders sit closer to the ground
- Because rubber tyres required a larger wheel
- To make the bicycle lighter overall
According to the passage, what made the safety bicycle easier to balance than earlier designs?
- It used two wheels of equal size and a chain connecting the pedals to the rear wheel
- It had wooden wheels without any tyres
- It had a much larger front wheel than the back wheel
- It was pushed forward using the rider's feet
According to the passage, who invented air-filled rubber tyres, and when?
- John Boyd Dunlop in 1888
- French inventors in the 1860s
- Karl von Drais in 1817
- Unknown inventors sometime in the 1880s
According to the passage, what do some historians believe about the bicycle's effect on society?
- It gave many people, including women, a new sense of independent mobility and changed social habits
- It remained affordable only for wealthy people
- It quickly replaced automobiles across Europe
- It had no effect on society beyond serving as transport
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