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 bicycle boom in the 1890s. Interestingly, the safety bicycle also played a role in women's liberation, as it gave women greater mobility and freedom.
❓ 강의에 따르면, 1880년대에 도입된 안전 자전거의 주요 장점은 무엇이었습니까?
A. A. 더 큰 앞바퀴를 장착하여 더 빠른 속도를 낼 수 있었다.
B. B. 체인 구동 방식으로 작동했으며, 두 개의 동일한 크기 바퀴를 갖추고 있어 더 안전하고 편안했습니다.
C. C. 페달이 장착된 최초의 자전거로, 라이더가 땅에 발을 대지 않고도 움직일 수 있게 해주었다.
D. D. 그것은 이전 모델들보다 더 가볍고 저렴하여 노동 계층이 접근하기 쉬웠다.
✅ 正确答案
B. It was powered by a chain drive and had two equal-sized wheels, making it safer and more comfortable.