In today's lecture, we'll discuss the history of the bicycle. The first pedal-driven bicycle was invented in the 1860s by a French blacksmith named Pierre Michaux. However, it was not until the 1880s that the 'safety bicycle' with two equal-sized wheels became popular, thanks to John Kemp Starley. This design allowed riders to reach the ground with their feet, making it much safer. By the early 20th century, bicycles had become a common mode of transport in European cities. Interestingly, the invention of the pneumatic tire by John Dunlop in 1888 greatly improved comfort and speed, leading to a boom in cycling.
❓ 강의에 따르면, 1880년대에 '안전 자전거'가 인기를 끌게 된 이유는 무엇인가요?
A. A. 그것은 프랑스 대장장이에 의해 발명되었습니다.
B. B. 그것은 크기가 같은 두 개의 바퀴를 가지고 있었고, 라이더가 땅에 닿을 수 있게 해주었다.
C. C. 공압 타이어가 장착되어 있었다.
D. D. 그것은 다른 자전거들보다 더 저렴했다.
✅ 正确答案
B. It had two equal-sized wheels and allowed riders to touch the ground.