Today we're going to discuss the history of the bicycle. The first two-wheeled vehicle, called the draisine, was invented in 1817 by a German baron. It had no pedals; riders pushed their feet against the ground. In the 1860s, pedals were added to the front wheel in France, creating the 'boneshaker'. Later, the high-wheel bicycle became popular in the 1870s, but it was dangerous because of its large front wheel. The modern 'safety bicycle' with equal-sized wheels and a chain drive was introduced in 1885, making cycling much safer and more accessible.
❓ 하이휠 자전거가 위험하다고 여겨진 주된 이유는 무엇이었나요?
A. A. 브레이크가 없었다.
B. B. 그것의 큰 앞바퀴는 불안정성을 초래하여 넘어지게 했다.
C. C. 그것은 너무 무거워서 제어할 수 없었다.
D. D. 페달은 뒷바퀴에 부착되어 있었다.
✅ 正确答案
B. Its large front wheel caused instability and falls.