Good morning, everyone. Today we're going to discuss the history of the bicycle. Now, many people think 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 wooden, two-wheeled machine called the 'running machine' or 'draisine.' It had no pedals; riders pushed their feet against the ground to move forward. Later, in the 1860s, French inventors added pedals to the front wheel, creating the first true bicycle. However, these early bicycles had a large front wheel and a small rear wheel, which made them unstable. It wasn't until the 1880s that the 'safety bicycle' with two equal-sized wheels and a chain drive became popular, making cycling much safer and more accessible.
❓ 1817년 칼 드라이스의 발명품은 어떤 특징을 가졌나요?
A. A. 같은 크기의 두 바퀴와 체인 구동
B. B. 앞바퀴에 나무 프레임과 페달이 있는 구조
C. C. 페달이 없는 나무 프레임으로, 발로 추진한다.
D. D. 큰 앞바퀴와 작은 뒷바퀴
✅ 正确答案
C. A wooden frame with no pedals, propelled by foot