Today's lecture is about the history of the bicycle. Now, many people assume the bicycle was invented in the 19th century, but in fact, a two-wheeled device called a 'celerifere' appeared in France in the 1790s. However, it had no steering and no pedals. The first pedal-powered bicycle, known as the 'velocipede', was developed in the 1860s in Paris. It had a wooden frame and iron tires, which made rides very bumpy. Later, in the 1880s, John Kemp Starley introduced the 'safety bicycle' with a chain drive and two equal-sized wheels, which greatly improved stability and comfort. This design became the basis for modern bicycles.
❓ 1880년대에 도입된 '안전 자전거'의 주요 장점은 무엇이었나요?
A. 알루미늄으로 만들어진 더 가벼운 프레임을 가졌다.
B. 여기에는 공기 주입식 고무 타이어가 포함되어 있었습니다.
C. 체인 구동 방식과 동일한 크기의 바퀴를 갖추어 안정성을 높였습니다.
D. 최초로 앞바퀴에 페달이 부착된 모델이었다.
✅ 正确答案
It featured a chain drive and equal-sized wheels for better stability.