Today's lecture is about the history of the bicycle. The first bicycle, invented in the early 19th century, had no pedals and was pushed along by the rider's feet. This design was called a 'hobby horse'. Later, in the 1860s, pedals were added to the front wheel, creating the 'velocipede'. However, it was not until the 1880s that the 'safety bicycle' with two equal-sized wheels and a chain drive became popular. This design made cycling much safer and more comfortable, leading to a boom in bicycle use among the general public, especially for leisure and commuting.
❓ 강의에 따르면, '안전 자전거'가 인기를 끌게 된 핵심 특징은 무엇이었나요?
A. A. 그것은 매우 큰 앞바퀴를 가지고 있었다.
B. B. 앞바퀴에 페달이 연결되어 있었다.
C. C. 그것은 크기가 같은 두 개의 바퀴와 체인 구동 장치를 갖추고 있었다.
D. D. 그것은 현대 자전거보다 더 가볍고 빨랐다.
✅ 正确答案
C. It had two equal-sized wheels and a chain drive.