Good morning, everyone. Today we're going to discuss the history of the bicycle. The first bicycle, invented in the early 19th century, had no pedals and was pushed along by the rider's feet. It was called a 'hobby horse'. Later, in the 1860s, pedals were added to the front wheel, creating the 'velocipede'. However, this design was uncomfortable and difficult to ride. 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.
❓ What was a key feature of the safety bicycle that made it popular?
A. A. It had pedals attached to the front wheel.
B. B. It had two equal-sized wheels and a chain drive.
C. C. It was pushed along by the rider's feet.
D. D. It was the first bicycle ever invented.
✅ 正确答案
B. It had two equal-sized wheels and a chain drive.