Today we're going to discuss the history of the bicycle. The first bicycle, called the 'Draisine', was invented in 1817 by Karl von Drais. It had no pedals; riders pushed their feet against the ground to move. In the 1860s, pedals were added to the front wheel, creating the 'velocipede'. However, this was uncomfortable due to its solid rubber tires. The 'high wheeler' came next, with a large front wheel for speed, but it was dangerous. Finally, in 1885, the 'safety bicycle' was introduced, featuring two equal-sized wheels and a chain drive, making it much safer and more practical.
❓ '하이 휠러'가 왜 위험한 것으로 여겨졌나요?
A. A. 그것은 브레이크가 없었다.
B. B. 그것은 넘어짐을 초래할 수 있는 큰 앞바퀴를 가지고 있었다.
C. C. 그것은 너무 무거워서 제어할 수 없었다.
D. D. 그것은 단단한 고무 타이어를 장착하고 있었다.
✅ 正确答案
B. It had a large front wheel that could cause falls.