Good morning, everyone. Today we're going to look at the history of the bicycle. The first bicycle, invented in the early 19th century, had no pedals. Riders pushed their feet against the ground to move forward. This was called a 'hobby horse.' Later, in the 1860s, pedals were added to the front wheel, creating the 'boneshaker,' which was very uncomfortable due to its wooden wheels and metal frame. By the 1880s, the 'safety bicycle' was introduced with two equal-sized wheels and a chain drive, making it much safer and more efficient. This design became the basis for modern bicycles. Interestingly, the popularity of bicycles also contributed to the women's rights movement, as it gave women greater personal mobility.
❓ “骨头摇”自行车的主要问题是什么?
A. A. 它没有踏板,很难移动。
B. B. 由于其构造,它非常不舒适。
C. C. 它有两个大小不同的轮子,因此不稳定。
D. D. 对大多数人来说,它太贵了,买不起。
✅ 正确答案
B. It was very uncomfortable because of its construction.