Today we're going to discuss the history of the bicycle. The first true bicycle, called the 'draisine', was invented in 1817 by a German baron. It had no pedals; riders pushed their feet against the ground. In the 1860s, French inventors added pedals to the front wheel, creating the 'velocipede'. However, it was very uncomfortable due to its rigid frame. Later, the 'penny-farthing' with a huge front wheel became popular, but it was dangerous. Finally, in 1885, the 'safety bicycle' with two equal-sized wheels and a chain drive was introduced, making cycling much safer and more practical for everyday use.
❓ 1885年に導入された安全自転車の重要な特徴は何でしたか?
A. A. ペダルがなかった。
B. B. それは巨大な前輪を備えていた。
C. C. それは同じ大きさの二つの車輪とチェーン駆動を備えていた。
D. D. それはサスペンションなしの剛性フレームを持っていた。
✅ 正确答案
C. It had two equal-sized wheels and a chain drive.