Good morning, everyone. Today we're going to discuss the history of the bicycle. The first bicycle, invented in the early 19th century, had no pedals; riders pushed their feet against the ground to move forward. It was called the 'hobby horse.' Later, in the 1860s, pedals were added to the front wheel, creating the 'penny-farthing.' However, these were dangerous because riders sat high above the ground. The modern safety bicycle, with two equal-sized wheels and a chain drive, appeared in the 1880s and became popular due to its stability and ease of use.
❓ 講義によると、ペニー・ファージング自転車の主な問題は何でしたか？
A. A. ペダルがありませんでした。
B. B. 重すぎて乗れなかった。
C. C. 騎手は地面から高く座っており、危険を伴った。
D. D. 車輪のサイズが異なっていたため、安定していなかった。
✅ 正确答案
C. Riders sat high above the ground, making it dangerous.