Good morning, everyone. Today we're going to discuss the history of the bicycle. Now, many people assume that the bicycle was invented in the 19th century, but actually the first two-wheeled vehicle, called the 'draisine', appeared in 1817. It was made of wood and had no pedals. Later, in the 1860s, pedals were added to the front wheel, creating the 'velocipede'. However, riding it was very uncomfortable because of the solid wheels and rough roads. Then, in 1885, the 'safety bicycle' was introduced. This design had a chain drive to the rear wheel and equal-sized wheels, which made riding much safer and more efficient. This is the design we still use today.
❓ Каким было основное улучшение «безопасного велосипеда» по сравнению с более ранними моделями?
A. A. У него были деревянные колёса для более плавной езды.
B. B. Это была первая модель с педалями.
C. C. Он использовал цепную передачу и колёса одинакового размера для безопасности.
D. D. Он был легче и дешевле в производстве.
✅ 正确答案
C. It used a chain drive and equal-sized wheels for safety.