Good morning, class. Today we're going to discuss the history of the bicycle. The first bicycle, called the 'Draisine', was invented in 1817 by a German baron. It had no pedals, so riders had to push their feet against the ground to move forward. In the 1860s, pedals were added to the front wheel, creating the 'velocipede'. However, this was uncomfortable due to its rigid frame. Later, in 1885, the 'safety bicycle' was introduced with a chain drive and two equal-sized wheels, making it much safer and more practical. This design became the basis for modern bicycles.
❓ 1885年に導入された安全自転車の主な利点は何でしたか？
A. A. 前輪にペダルが取り付けられていた。
B. B. それはより軽く、持ち運びやすかった。
C. C. それはチェーン駆動と同サイズの車輪を備えており、より安全でした。
D. D. それは、乗り手が足で地面を蹴って進むことを必要とした。
✅ 正确答案
C. It had a chain drive and equal-sized wheels, making it safer.