Today's lecture is about the history of the bicycle. The first pedal-powered bicycle was invented in the 1830s by a Scottish blacksmith named Kirkpatrick MacMillan. However, it wasn't until the 1880s that the 'safety bicycle' with two equal-sized wheels became popular, making cycling accessible to a wider audience, especially women. The lecturer also mentions that the introduction of pneumatic tires in 1888 by John Boyd Dunlop greatly improved comfort, but the key point is that the safety bicycle's design was crucial for mass adoption.
❓ 講義によると、自転車を広く普及させる上で最も重要な要因は何でしたか？
A. 1830年代における最初のペダル式自転車の発明
B. 1880年代における、同じ大きさの二つの車輪を備えた安全自転車の設計
C. ジョン・ボイド・ダンロップによる1888年の空気入りタイヤの導入
D. スコットランドの鍛冶屋カークパトリック・マクミランの仕事
✅ 正确答案
The design of the safety bicycle with two equal-sized wheels in the 1880s