Good morning, class. Today we're discussing the history of the bicycle. The first bicycle, invented in the early 19th century, had no pedals and was pushed along by the rider's feet. It was called a 'velocipede'. Later, in the 1860s, pedals were added to the front wheel, making it faster but also harder to balance. It wasn't until the 1880s that the 'safety bicycle' with two equal-sized wheels and a chain drive became popular. This design made cycling much safer and more accessible, especially for women. Interestingly, the bicycle's popularity led to better roads and even influenced the early automobile industry.
❓ 1880年代に安全自転車が人気を博した理由は何でしょうか?
A. ペダルがなくて、押しやすかった。
B. それは同じ大きさの二つの車輪とチェーン駆動を備えており、より安全でした。
C. 大きな前輪が速度を向上させました。
D. それはベロシペードよりも安かった。
✅ 正确答案
It had two equal-sized wheels and a chain drive, making it safer.