Today we're going to discuss the history of the bicycle. The first bicycle, invented in the early 19th century, had no pedals; riders pushed their feet along the ground. Later, pedals were added to the front wheel, which made the ride faster but dangerous, as the front wheel became very large. By the 1880s, the 'safety bicycle' appeared with two equal-sized wheels and a chain drive, making it much safer and more popular. Interestingly, this design also allowed women to ride comfortably, leading to a significant social change in clothing and mobility.
❓ 안전 자전거가 이전 디자인보다 가졌던 주요 장점은 무엇이었나요?
A. A. 큰 앞바퀴 덕분에 더 빨랐다.
B. B. 바퀴 크기가 동일하고 체인 구동 방식이라 더 안전했다.
C. C. 더 가볍고 휴대하기 쉬웠다.
D. D. 다른 자전거들보다 유지보수가 덜 필요했다.
✅ 正确答案
B. It was safer due to its equal-sized wheels and chain drive.