Good morning, class. Today we're going to discuss the history of the bicycle. The first bicycle, invented in the early 19th century, had no pedals and was pushed along by the rider's feet. Later, in the 1860s, pedals were added to the front wheel. However, these early bicycles were very uncomfortable due to their solid rubber tires and rough frames. It wasn't until the 1880s that the safety bicycle, with two equal-sized wheels and a chain drive, became popular. This design made cycling much safer and more accessible to the general public.
❓ Согласно лекции, что сделало безопасный велосипед более популярным, чем более ранние модели?
A. У него было большее переднее колесо и педали.
B. Это была первая модель, в которой использовались резиновые шины.
C. У него было два колеса одинакового размера и цепная передача.