Good morning, everyone. Today we're going to discuss the history of the bicycle. As you might know, the first bicycle-like invention appeared in the early 19th century, but it was called a 'hobby horse' and had no pedals. Riders pushed themselves along with their feet. Then, in the 1860s, pedals were added to the front wheel, creating the 'velocipede'. However, this design was uncomfortable and often called the 'boneshaker'. It wasn't until the 1880s that the 'safety bicycle' was introduced, with two equal-sized wheels and a chain drive. This design became hugely popular because it was much safer and faster than earlier models.
❓ Xe đạp an toàn có lợi thế chính gì so với các mẫu xe trước đó?
A. A. Nó có ghế ngồi thoải mái hơn.
B. B. An toàn và nhanh hơn nhờ hệ thống truyền động xích và các bánh xe bằng nhau.
C. C. Nó nhẹ hơn và dễ mang theo hơn.
D. D. Nó có thể được cưỡi mà không cần dùng tay.
✅ 正确答案
B. It was safer and faster due to its chain drive and equal wheels.