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, and riders pushed themselves along with their feet. In the 1860s, pedals were added to the front wheel, creating the 'velocipede'. However, this design was uncomfortable and hard to ride. Then, in 1885, the 'safety bicycle' was introduced with a chain drive and two equal-sized wheels, making it much more stable and popular. By the early 1900s, bicycles had become a common mode of transport for ordinary people.
❓ 安全自行车相较于早期车型的主要优势是什么？
A. A. 它更轻便，生产成本也更低。
B. B. 它的座椅和把手更舒适。
C. C. 由于车轮尺寸相同且采用链条传动，它更加稳定。
D. D. 在平坦路面上可以骑得更快。
✅ 正确答案
C. It was more stable due to equal-sized wheels and a chain drive.