Good morning, everyone. Today we're going to discuss 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 modern chain-driven bicycle was developed in England. This design quickly became popular, and by the early 1900s, bicycles were a common means of transport. Interestingly, the invention of the pneumatic tire in 1888 by John Boyd Dunlop significantly improved riding comfort, which led to a boom in cycling as a leisure activity.
❓ 是什么让骑行变得更加舒适，并提升了其作为休闲活动的普及度？
A. A. 19世纪80年代链条驱动自行车的发明
B. B. 麦克米伦对脚踏动力自行车的研发
C. C. 邓禄普引入充气轮胎
D. D. 20世纪初自行车产量的增长
✅ 正确答案
C. The introduction of the pneumatic tire by Dunlop