Today we're going to discuss the history of the bicycle. Although many people assume the bicycle was invented in the 19th century, its earliest ancestor actually appeared in 1817, when a German inventor created a two-wheeled wooden frame with no pedals. This machine, called a 'hobby horse,' was pushed along by the rider's feet. Later, in the 1860s, pedals were attached to the front wheel, but riding was very uncomfortable because of the solid rubber tires. It wasn't until the 1880s that the 'safety bicycle' with a chain drive and two equal-sized wheels became popular, making cycling accessible to a wider range of people.
❓ 「安全自転車」は、どのようにしてより幅広い人々にとって利用しやすくなったのでしょうか?
A. A. 前輪へのペダルの追加
B. B. チェーンドライブと同サイズのホイールの使用
C. C. 木製フレームの発明
D. D. ソリッドラバータイヤの導入
✅ 正确答案
B. The use of a chain drive and equal-sized wheels