Today's lecture is about the history of the bicycle. Now, many people assume the bicycle was invented in the 19th century, but in fact, a two-wheeled device called a 'celerifere' appeared in France in the 1790s. However, it had no steering and no pedals. The first pedal-powered bicycle, known as the 'velocipede', was developed in the 1860s in Paris. It had a wooden frame and iron tires, which made rides very bumpy. Later, in the 1880s, John Kemp Starley introduced the 'safety bicycle' with a chain drive and two equal-sized wheels, which greatly improved stability and comfort. This design became the basis for modern bicycles.
❓ 1880年代に導入された「安全自転車」の主な利点は何でしたか？
A. それはアルミニウム製のより軽いフレームを持っていた。
B. これには空気入りゴムタイヤが含まれていました。
C. チェーン駆動と同サイズの車輪を備え、安定性が向上しました。
D. 前輪にペダルが取り付けられた最初のモデルでした。
✅ 正确答案
It featured a chain drive and equal-sized wheels for better stability.