Good morning, class. Today we're going to discuss the history of the bicycle. Now, many people believe the bicycle was invented in the 19th century, but its origins actually go back further. In 1817, a German inventor named Karl Drais created a two-wheeled vehicle called the 'running machine' or 'draisine.' It had no pedals; riders pushed their feet against the ground to move. Later, in the 1860s, pedals were added to the front wheel in France. Interestingly, the first bicycles with chain drives and equal-sized wheels appeared in the 1880s, which made riding much safer and more efficient. So, while the basic idea is old, the modern bicycle we know today took over a century to develop.
❓ 강의에 따르면 최초의 자전거에 대해 무엇을 말할 수 있습니까?
A. A: 그것은 19세기에 페달과 함께 발명되었습니다.
B. B: 바퀴가 두 개 있었고, 라이더의 발로 힘을 얻어 움직였어요.
C. C: 그것은 체인 구동과 동일한 크기의 바퀴를 특징으로 했습니다.
D. D: 그것은 1860년대에 프랑스에서 처음 개발되었습니다.
✅ 正确答案
B: It had two wheels and was powered by the rider's feet.