In today's lecture, we'll 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. Later, in the 1860s, pedals were added to the front wheel in France, leading to the 'boneshaker'. However, it was not until the 1880s that the safety bicycle, with two equal-sized wheels and a chain drive, became popular. This design greatly reduced the risk of falls, making cycling accessible to the general public, especially women.
❓ 강의에 따르면, 안전 자전거가 초기 모델보다 더 인기를 끌게 된 이유는 무엇인가요?
A. A. 그것은 더 큰 앞바퀴를 가지고 있었다.
B. B. 그것은 독일의 남작에 의해 발명되었다.
C. C. 그것은 두 개의 동일한 크기의 바퀴와 체인 구동 장치를 갖추고 있었다.
D. D. 페달이 없어서 타기가 더 쉬웠다.
✅ 正确答案
C. It featured two equal-sized wheels and a chain drive.