Good morning, everyone. Today we're going to discuss the history of the bicycle. Now, many people assume that the bicycle was invented in the 19th century, and that's partly true. The first two-wheeled vehicle, called a 'draisine', appeared in 1817, but it had no pedals. You pushed it along with your feet. Later, in the 1860s, pedals were added to the front wheel, creating the 'velocipede'. However, it was quite uncomfortable due to its rigid frame. The major breakthrough came in 1885 when John Kemp Starley designed the 'Rover', which had a chain drive to the rear wheel and a more stable diamond frame. This design is the basis for most modern bicycles.
❓ 'Rover' 자전거가 이전 모델들에 비해 주요 개선점은 무엇이었나요?
A. A. 앞바퀴에 페달이 연결되어 있었다.
B. B. 두 개의 바퀴를 가진 최초의 자전거였다.
C. C. 그것은 체인 구동 방식으로 뒷바퀴에 동력을 전달했으며 안정적인 프레임을 갖추고 있었다.
D. D. 더 가벼웠고 보관을 위해 접을 수 있었다.
✅ 正确答案
C. It used a chain drive to the rear wheel and a stable frame.