Today we're going to discuss the history of the bicycle. Although many people credit the invention to the 19th century, early prototypes appeared as far back as the 18th century. However, the first practical model, the 'velocipede', was introduced in the 1860s in France. It had pedals attached to the front wheel, which made it difficult to ride on rough roads. Later, in the 1880s, the 'safety bicycle' was developed in England, featuring a chain drive and two equal-sized wheels, making it much more stable. This design became the basis for modern bicycles.
❓ 根据讲座内容，安全自行车相较于脚踏车的主要优势是什么？
A. 它更轻便，更容易携带。
B. 它采用了链式传动和等大的车轮，使其更加稳定。
C. 它更早是在法国发明的。
D. 这辆车的前轮上装有踏板。
✅ 正确答案
It had a chain drive and equal-sized wheels, making it more stable.