Good morning, everyone. Today we're going to talk about the history of the bicycle. Now, many people believe that the bicycle was invented in the 19th century, but actually, the first two-wheeled vehicle, called a 'velocipede', appeared in France in the 1790s. However, it had no pedals and was pushed along by the rider's feet. The first pedal-driven bicycle was developed in Scotland in 1839 by a blacksmith named Kirkpatrick Macmillan. But it wasn't until the 1880s that the modern safety bicycle, with two equal-sized wheels and a chain drive, became popular, especially after John Dunlop invented the pneumatic tire in 1888, which made riding much more comfortable. So, the key innovation that made cycling widely accessible was the air-filled tire.
❓ 根据讲座内容,是什么让骑行得以广泛普及于公众?
A. A. 法国自行车的发明
B. B. 苏格兰踏板驱动自行车的发展
C. C. 约翰·邓洛普发明充气轮胎
D. D. 等轮安全自行车的引入
✅ 正确答案
C. The invention of the pneumatic tire by John Dunlop