Good morning. 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; riders pushed their feet against the ground. In the 1860s, pedals were added to the front wheel, creating the 'velocipede'. However, it was very uncomfortable due to its solid rubber tires and wooden frame. The 'high wheeler' or 'penny-farthing' followed in the 1870s, with a large front wheel for speed. But it was dangerous because riders sat high above the ground. Finally, in 1885, the 'safety bicycle' with two equal-sized wheels and a chain drive was introduced, making cycling much safer and more popular.
❓ “便士法新”自行车的主要问题是什么？
A. A. 它没有踏板，而且速度很慢。
B. B. 由于实心橡胶轮胎，乘坐起来很不舒适。
C. C. 这很危险，因为骑手坐得非常高。
D. D. 由于木质框架，它太重了。
✅ 正确答案
C. It was dangerous because the rider sat very high.