Today we're going to discuss the history of the bicycle. Now, you might think the bicycle was invented in the 19th century, but its earliest form appeared in 1817, when a German inventor created a wooden frame with two wheels and a handlebar, but no pedals. Riders pushed their feet against the ground to move. This was called a 'hobby horse.' Later, in the 1860s, pedals were added to the front wheel, leading to the 'velocipede.' However, it wasn't until the 1880s that the chain-driven 'safety bicycle' with two equal-sized wheels became popular, making cycling much safer and more comfortable.
❓ 최초 형태의 자전거의 주요 특징은 무엇이었는가?
A. A. 그것은 체인 구동 메커니즘을 갖추고 있었다.
B. B. 그것은 페달이 없었고, 탑승자들은 발로 밀어서 움직였다.
C. C. 안전을 위해 크기가 서로 다른 두 개의 바퀴가 있었다.
D. D. 그것은 전적으로 금속으로 만들어졌다.
✅ 正确答案
B. It had no pedals and riders pushed with their feet.