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.
❓ Согласно лекции, каким был самый важный фактор, сделавший велосипеды широко популярными?
A. Изобретение первого велосипеда с педальным приводом в 1830-х годах
B. Проектирование безопасного велосипеда с двумя колёсами одинакового размера в 1880-х годах
C. Внедрение пневматических шин Джоном Бойдом Данлопом в 1888 году
D. Работа шотландского кузнеца Киркпатрика Макмиллана
✅ 正确答案
The design of the safety bicycle with two equal-sized wheels in the 1880s