In today's lecture, we'll discuss the history of the bicycle. The first major innovation came in 1817, when Karl Drais invented a two-wheeled 'running machine' without pedals. Then, in the 1860s, pedals were added to the front wheel, creating the 'velocipede'. However, this design was uncomfortable and hard to ride. The breakthrough occurred in 1885 when John Kemp Starley introduced the 'safety bicycle' with a chain-driven rear wheel and equal-sized wheels. This design became the basis for modern bicycles. Interestingly, the safety bicycle's popularity also led to changes in women's fashion, as it made cycling accessible to women who wore skirts.
❓ 1885년에 소개된 안전 자전거의 주요 장점은 무엇이었나요?
A. A. 더 편안한 좌석이 있었다.
B. B. 그것은 페달이 달린 최초의 자전거였다.
C. C. 그것은 체인으로 구동되는 뒷바퀴와 동일한 크기의 바퀴를 사용하여 더 안전하고 안정적이었다.
D. D. 더 가볍고 생산 비용이 더 저렴했다.
✅ 正确答案
C. It used a chain-driven rear wheel and equal-sized wheels, making it safer and more stable.