Today we're going to discuss the history of the bicycle. Early bicycles in the 19th century had wooden wheels and no pedals; riders pushed their feet along the ground. The first major improvement came in the 1860s with the addition of pedals to the front wheel. However, these 'penny-farthings' were dangerous because of their large front wheel. In 1885, the 'safety bicycle' was introduced with two equal-sized wheels and a chain drive, making it much more stable. Later, pneumatic tires were added, which greatly improved comfort and speed. By the early 20th century, bicycles became affordable for the general public.
❓ Каким было главное преимущество безопасного велосипеда по сравнению с более ранними моделями?
A. У него были деревянные колёса.
B. У него было большее переднее колесо
C. Она была более устойчивой благодаря колёсам одинакового размера и цепной передаче.
D. Производить было дешевле.
✅ 正确答案
It was more stable due to equal-sized wheels and a chain drive