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.
❓ 강의에 따르면, 무엇이 자전거를 대중에게 널리 보급되게 만들었나요?
A. A. 프랑스에서의 벨로시페드 발명
B. B. 스코틀랜드에서 페달 구동 자전거의 발전
C. C. 존 던롭에 의한 공기 타이어의 발명
D. D. 안전 자전거(동일한 크기의 바퀴를 가진)의 도입
✅ 正确答案
C. The invention of the pneumatic tire by John Dunlop