Good morning, everyone. Today we're going to discuss the history of the bicycle. Now, many people think the bicycle was invented in the 19th century, but its origins actually go back further. The first known two-wheeled vehicle, called a 'velocipede', appeared in France in the 1790s. However, it had no pedals; riders pushed their feet against the ground. The real breakthrough came in 1860s when pedals were attached to the front wheel. But this design was dangerous because it was easy to tip over. 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 public.
❓ 1790年代のベロシペードの設計における主な問題は何でしたか？
A. 重すぎて乗れなかった。
B. ペダルがなかったので、乗り手は足で地面を蹴って進まなければならなかった。
C. 操縦が難しかった。
D. 生産するには高すぎた。
✅ 正确答案
It had no pedals, so riders had to push with their feet.