Good morning, class. Today we're going to discuss the history of the bicycle. The first bicycle, called the 'Draisine', was invented in 1817 by a German baron. It had no pedals, so riders had to push their feet against the ground to move forward. In the 1860s, pedals were added to the front wheel, creating the 'velocipede'. However, this was uncomfortable due to its rigid frame. Later, in 1885, the 'safety bicycle' was introduced with a chain drive and two equal-sized wheels, making it much safer and more practical. This design became the basis for modern bicycles.
❓ 1885년에 도입된 안전자전거의 주요 장점은 무엇이었나요?
A. A. 앞바퀴에 페달이 달려 있었다.
B. B. 그것은 더 가볍고 휴대하기 쉬웠다.
C. C. 체인 구동 방식과 동일한 크기의 바퀴를 갖추어 더 안전했습니다.
D. D. 승객들이 발로 밀어야 했다.
✅ 正确答案
C. It had a chain drive and equal-sized wheels, making it safer.