Today we're going to discuss the history of the bicycle. Although many people think the bicycle was invented in the 19th century, its origins actually go back further. The first two-wheeled vehicle, called a 'draisine', was invented by a German baron in 1817. It had no pedals; riders pushed their feet against the ground. Later, in the 1860s, pedals were added to the front wheel, creating the 'velocipede'. However, this design was uncomfortable due to its rigid frame and wooden wheels. It wasn't until the 1880s that the 'safety bicycle' with a chain drive and equal-sized wheels became popular, making cycling much safer and more practical for ordinary people.
❓ 根据讲座内容,velocipede(早期自行车)存在的一个主要问题是什么?
A. A. 它太重了,无法骑上坡。
B. B. 它没有刹车。
C. C. 由于车架僵硬且车轮为木质,乘坐起来很不舒适。
D. D. 对大多数人来说太贵了。
✅ 正确答案
C. It was uncomfortable because of its rigid frame and wooden wheels.