In today's lecture, we'll 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. This was called a 'hobby horse.' Later, in the 1860s, pedals were added to the front wheel, creating the 'penny-farthing.' However, these were dangerous due to their large front wheel. It wasn't until the 1880s that the 'safety bicycle' appeared, with two equal-sized wheels and a chain drive, making it much safer and more practical for everyday use.
❓ 講義によると、安全自転車がそれ以前のモデルに対して持っていた主な利点は何でしたか？
A. より大きな前輪を備え、速度を追求していた。
B. デザインとチェーンドライブのおかげで、より安全でした。
C. 軽くて持ち運びやすかった。
D. ペニー・ファージングよりもメンテナンスが少なくて済みました。
✅ 正确答案
It was safer because of its design and chain drive.