Good morning, everyone. Today we're going to look at the history of the bicycle. Now, you might think the bicycle is a fairly modern invention, but in fact, the first two-wheeled vehicle, called a 'draisine', was invented in 1817 by a German baron. It had no pedals; you pushed it along with your feet. Then, in the 1860s, pedals were added to the front wheel in France. However, these early bicycles were very uncomfortable because of the solid rubber tires and rough roads. It wasn't until the 1880s that the modern 'safety bicycle' with a chain drive and two equal-sized wheels appeared, making cycling much safer and more popular.
❓ 19世纪80年代推出的“安全自行车”的主要优势是什么？
A. 它配备了实心橡胶轮胎，以提供更平稳的行驶体验。
B. 它配备了链条传动和等大的车轮，使其更加安全。
C. 它更轻便，可以用脚推着前进。
D. 这是第一辆在前轮上装有脚踏板的自行车。
✅ 正确答案
It was equipped with a chain drive and equal-sized wheels, making it safer.