Good morning, class. Today we're going to discuss the history of the bicycle. The first bicycle, called the 'Draisine', was invented in 1817 by a German baron. It had no pedals, so riders had to push their feet against the ground to move forward. In the 1860s, pedals were added to the front wheel, creating the 'velocipede'. However, this was uncomfortable due to its rigid frame. Later, in 1885, the 'safety bicycle' was introduced with a chain drive and two equal-sized wheels, making it much safer and more practical. This design became the basis for modern bicycles.
❓ Какое было главное преимущество безопасного велосипеда, представленного в 1885 году?
A. A. У него были педали, прикреплённые к переднему колесу.
B. B. Он был легче и удобнее для переноски.
C. C. Она имела цепной привод и колёса одинакового размера, что делало её более безопасной.
D. D. Оно требовало от ездоков отталкиваться ногами.
✅ 正确答案
C. It had a chain drive and equal-sized wheels, making it safer.