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.
❓ 안전 자전거가 인기를 끌게 된 주요 특징은 무엇이었나요?
A. A. 앞바퀴에 페달이 연결되어 있었다.
B. B. 그것은 두 개의 같은 크기의 바퀴와 체인 드라이브를 가지고 있었다.
C. C. 그것은 라이더의 발에 의해 밀려서 움직였다.
D. D. 그것은 발명된 최초의 자전거였다.
✅ 正确答案
B. It had two equal-sized wheels and a chain drive.