Good morning, everyone. Today we're going to discuss the history of the bicycle. Now, many people think the bicycle was invented in the 19th century, but its origins actually go back further. In 1817, a German inventor named Karl von Drais created a two-wheeled machine called the 'Draisine', which had no pedals. Riders pushed themselves along with their feet. It wasn't until the 1860s that pedals were added, in France. However, the real breakthrough came in 1885 when John Kemp Starley designed the 'Rover Safety Bicycle', which had a chain drive and equal-sized wheels. This design made cycling much safer and more practical, leading to a boom in popularity.
❓ Согласно лекции, в чём заключалось основное преимущество велосипеда Rover Safety Bicycle по сравнению с более ранними конструкциями?
A. A. У него были педали, прикреплённые к переднему колесу.
B. B. Он был легче и удобнее для переноски.
C. C. Он использовал цепной привод и колёса одинакового размера, что делало его безопаснее.
D. D. Его можно было складывать для хранения.
✅ 正确答案
C. It used a chain drive and equal-sized wheels, making it safer.