Good morning, class. Today we're going to discuss the history of the bicycle. The first bicycle, invented in the early 19th century, was called a 'velocipede' and had no pedals. Riders pushed their feet against the ground to move forward. Later, in the 1860s, pedals were added to the front wheel, creating the 'boneshaker' due to its rough ride. By the 1880s, the 'safety bicycle' appeared with two equal-sized wheels and a chain drive, making it much safer and more popular. Interestingly, the bicycle's popularity also led to improvements in road surfaces and even influenced women's fashion, as women began wearing more practical clothing to ride.
❓ '안전 자전거'가 이전 모델보다 더 인기를 끌게 된 주요 이유는 무엇이었나요?
A. A. 더 편안한 좌석이 있었다.
B. B. 제조 비용이 더 저렴했다.
C. C. 그것은 크기가 같은 두 개의 바퀴와 체인 드라이브를 갖추고 있어 더 안전했다.
D. D. 그것은 더 가볍고 휴대하기 쉬웠다.
✅ 正确答案
C. It had two equal-sized wheels and a chain drive, making it safer.