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 very uncomfortable due to its solid tires and rough ride. It wasn't until the 1880s that the 'safety bicycle' with two equal-sized wheels and a chain drive was introduced, making cycling much safer and more popular, especially among women.
❓ 1880年代に導入された安全自転車の大きな改良点は何でしたか？
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. それは騎手の足で押し進められた。
D. D. より滑らかな乗り心地のために、ソリッドタイヤを装着していた。
✅ 正确答案
B. It had two equal-sized wheels and a chain drive.