Good morning, everyone. Today we're going to discuss 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 'hobby horse'. Later, in the 1860s, pedals were added to the front wheel, creating the 'velocipede'. However, this design was uncomfortable and difficult to ride. It wasn't until the 1880s that the 'safety bicycle' with a chain drive and two equal-sized wheels became popular, making cycling much safer and more accessible to the general public.
❓ 安全自転車が人気を博した重要な特徴は何でしたか？
A. A. 前輪にペダルが取り付けられていた。
B. 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いた。
C. C. それは騎手の足によって押し進められた。
D. D. それは史上初めて発明された自転車でした。
✅ 正确答案
B. It had two equal-sized wheels and a chain drive.