Good morning, everyone. Today we're going to look at the history of the bicycle. Now, many people think the bicycle was invented in the 19th century, but in fact, a simple two-wheeled device appeared in France as early as 1790. However, it had no pedals and was pushed along by the feet. The first machine with pedals was built in Scotland in 1839, but it was very uncomfortable to ride. It wasn't until the 1880s that the 'safety bicycle' with a chain drive and equal-sized wheels became popular, making cycling accessible to a wider range of people, including women.
❓ 강의에 따르면, 자전거가 더 넓은 범위의 사람들 사이에서 인기를 얻게 된 이유는 무엇인가요?
A. 스코틀랜드에서 페달의 발명
B. 체인 드라이브와 동일한 크기의 바퀴의 도입
C. 프랑스에서 최초의 이륜 장치가 등장한 것
D. 19세기 편안한 좌석의 발전
✅ 正确答案
The introduction of the chain drive and equal-sized wheels