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🎧 Listening Transcript

Today we're going to discuss the history of the bicycle. Now, many people think the bicycle was invented in the 19th century, but in fact, early prototypes appeared in the 18th century. The first known example, called the 'celerifere', was created in France around 1790. It had no pedals or steering, and riders simply pushed their feet along the ground. Later, in 1817, a German inventor added a steering mechanism, but still no pedals. It wasn't until the 1860s that pedals were attached to the front wheel, leading to the 'boneshaker'. So, the key point is that the addition of pedals came much later than the initial invention.
❓ 강의에 따르면, 1817년 자전거의 주요 혁신은 무엇이었습니까?

✅ 正确答案

B. The addition of a steering mechanism

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