Today we're going to discuss the history of the bicycle. While many people think of the bicycle as a relatively modern invention, its origins actually date back to the early 19th century. The first two-wheeled vehicle, called the 'draisine', was invented by Karl von Drais in 1817. It had no pedals; riders pushed themselves along with their feet. Later, in the 1860s, pedals were added to the front wheel, giving rise to the 'penny-farthing' with its large front wheel. However, it wasn't until the 1880s that the 'safety bicycle' with a chain drive and two equal-sized wheels became popular, making cycling much safer and more accessible to the general public.
❓ 是什么让“安全自行车”在19世纪80年代流行起来?
A. A. 它有一个大前轮,而且速度很快。
B. B. 这是第一辆装有脚踏板的自行车。
C. C. 它采用了链传动和等大的车轮,使其更加安全。
D. D. 它由卡尔·冯·德莱斯发明,无需脚踏板。
✅ 正确答案
C. It had a chain drive and equal-sized wheels, making it safer.