Good morning, everyone. Today we're going to look at 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. This was called a 'hobby horse.' Later, in the 1860s, pedals were added to the front wheel, creating the 'boneshaker,' which was very uncomfortable due to its wooden wheels and metal frame. By the 1880s, the 'safety bicycle' was introduced with two equal-sized wheels and a chain drive, making it much safer and more efficient. This design became the basis for modern bicycles. Interestingly, the popularity of bicycles also contributed to the women's rights movement, as it gave women greater personal mobility.
❓ 「ボーンシェイカー」自転車の主な問題は何でしたか?
A. A. それはペダルがなく、動かすのが難しかった。
B. B. その構造のせいで、とても不快だった。
C. C. それは大きさの異なる二つの車輪を持っており、不安定だった。
D. D. ほとんどの人にとって、それを買うには高すぎた。
✅ 正确答案
B. It was very uncomfortable because of its construction.