Good morning, everyone. Today we're going to discuss the history of the bicycle. Now, you might think the bicycle was invented in the 19th century, and you'd be right, but its early designs were quite different from what we see today. The first two-wheeled vehicle, called the 'draisine', was invented by Karl von Drais in 1817. It had no pedals; riders pushed their feet against the ground to move. Later, in the 1860s, pedals were added to the front wheel, leading to the famous 'penny-farthing' with its huge front wheel. However, it wasn't until the 1880s that the 'safety bicycle' with a chain drive and two equal-sized wheels became popular, making cycling much safer and more accessible to the general public.
❓ 1817年发明的“德莱斯车”的一个关键特征是什么?
A. A. 它的前轮上装有踏板。
B. B. 它是由骑行者用脚蹬地来驱动的。
C. C. 它有两个大小相同的轮子和一个链条传动装置。
D. D. 它是专门为赛车而设计的。
✅ 正确答案
B. It was powered by the rider pushing feet on the ground.