In today's lecture, we'll discuss the history of the bicycle. The first two-wheeled vehicle, called the draisine, was invented in 1817 by a German baron. It had no pedals; riders pushed their feet against the ground. Later, in the 1860s, pedals were added to the front wheel in France, leading to the 'boneshaker'. However, it was not until the 1880s that the safety bicycle, with two equal-sized wheels and a chain drive, became popular. This design greatly reduced the risk of falls, making cycling accessible to the general public, especially women.
❓ 根据讲座内容，是什么让安全自行车比早期型号更受欢迎？
A. A. 它有一个更大的前轮。
B. B. 它是由一位德国男爵发明的。
C. C. 它配备了两个大小相同的轮子和链条传动装置。
D. D. 它没有踏板，骑起来更容易。
✅ 正确答案
C. It featured two equal-sized wheels and a chain drive.