Good morning, class. Today we're discussing the history of the bicycle. The first pedal-powered bicycle was invented in the 1860s by a French blacksmith named Pierre Michaux. However, it had wooden wheels and a heavy iron frame, making it difficult to ride. In 1885, John Kemp Starley introduced the 'safety bicycle' with a chain drive and equal-sized wheels, which was much more stable. This design became wildly popular and is the basis for modern bicycles. Interestingly, the original word 'bicycle' comes from French, combining 'bi-' meaning two and 'kyklos' meaning circle, referring to the two wheels.
❓ Согласно лекции, в чём заключалось главное преимущество безопасного велосипеда, представленного в 1885 году?
A. Из-за деревянных колёс было легче.
B. Она имела цепной привод и колёса одинакового размера для лучшей устойчивости.
C. Его изобрёл французский кузнец.
D. Это был первый велосипед с двумя колёсами.
✅ 正确答案
It had a chain drive and equal-sized wheels for better stability.