In today's lecture, we'll discuss the history of the bicycle. The first two-wheeled vehicle, called the draisine, appeared in 1817 in Germany. It had no pedals; riders pushed their feet against the ground. In the 1860s, pedals were added to the front wheel in France, creating the velocipede. However, it was nicknamed the 'boneshaker' due to its rigid frame and rough ride. Later, in the 1880s, the safety bicycle was introduced in England with a chain drive and two equal-sized wheels, making it much more stable. This design became the basis for modern bicycles.
❓ 1880年代に導入された安全自転車の主な利点は何でしたか？
A. 座り心地がより快適だった。
B. より軽くて持ち運びやすかった。
C. 等しいサイズの車輪とチェーン駆動のおかげで、より安定していました。
D. それは初期のモデルよりも速く移動できた。
✅ 正确答案
It was more stable because of its equal-sized wheels and chain drive.