Today we're going to discuss the history of the bicycle. Early bicycles, called velocipedes, appeared in the 19th century. They had wooden frames and iron wheels, making them very uncomfortable. In 1885, John Kemp Starley introduced the 'Rover' safety bicycle, which had a chain drive and equal-sized wheels. This design became popular because it was safer and faster than the penny-farthing. However, it wasn't until the 20th century that bicycles became widely affordable for ordinary people, especially after mass production techniques lowered costs. Now, bicycles are not just for transport but also for sport and leisure.
❓ 강의에 따르면, '로버' 안전 자전거가 인기를 끈 이유는 무엇인가요?
A. A. 그것은 다른 자전거들보다 더 저렴했다.
B. B. 그것은 나무 프레임과 철제 바퀴를 가지고 있었다.
C. C. 그것은 페니파딩보다 더 안전하고 빨랐다.
D. D. 그것은 역사상 최초로 발명된 자전거였다.
✅ 正确答案
C. It was safer and faster than the penny-farthing.