Good morning, everyone. Today we're going to discuss the history of the bicycle. Now, you might be surprised to learn that the first bicycle, invented in the early 19th century, had no pedals. It was propelled by pushing your feet against the ground. This design, called a 'hobby horse,' was popular but inefficient. Then, in the 1860s, the addition of pedals to the front wheel made riding faster, but it was also dangerous because riders often fell forward. It wasn't until the late 1880s that the 'safety bicycle' with a chain drive and two equal-sized wheels was introduced, which greatly improved stability and paved the way for modern bicycles.
❓ 앞바퀴에 페달이 달린 자전거 디자인의 주요 문제점은 무엇이었나요?
A. 너무 느려서 실용적이지 못했다.
B. 라이더들은 불안정성 때문에 자주 앞으로 넘어졌다.
C. 제조 비용이 너무 비쌌습니다.
D. 페달을 밟는 데 너무 많은 체력이 필요했다.
✅ 正确答案
Riders frequently fell forward due to instability.