Good morning, everyone. Today we're going to look at the history of the bicycle, focusing on its early development. The first two-wheeled vehicle, called the velocipede, appeared in France in the 1860s. It had pedals attached directly to the front wheel, which made it difficult to ride. Later, in the 1870s, British inventors introduced the high-wheel bicycle, with a large front wheel and a small rear one. This design allowed greater speed, but it was unsafe because riders could easily tip forward. Finally, in 1885, the 'safety bicycle' was developed, featuring two wheels of equal size and a chain drive. This design became the basis for modern bicycles.
❓ 강사가 언급한 높은 바퀴 자전거의 주요 단점은 무엇이었나요?
A. A. 실용적으로 사용하기에는 너무 느렸다.
B. B. 큰 뒷바퀰 때문에 조향하기가 어려웠다.
C. C. 라이더들은 그 디자인 때문에 앞으로 넘어질 위험이 있었다.
D. D. 페달이 없어서 발로 밀어야 했다.
✅ 正确答案
C. Riders risked falling forward because of its design.