Today we're going to discuss the history of the bicycle. The first two-wheeled vehicle, called the 'velocipede', appeared in the early 19th century. It had no pedals, so riders pushed their feet along the ground. In the 1870s, the 'penny-farthing' became popular, with a huge front wheel and a small rear wheel. However, it was dangerous because riders sat high above the ground. Then in 1885, the 'safety bicycle' was invented. It had two equal-sized wheels and a chain drive, making it much safer and more practical. By the early 20th century, bicycles had become a common mode of transport for ordinary people.
❓ 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. 重すぎて上り坂を走ることができなかった。
B. B. ペダルがなかったため、速度が遅かった。
C. C. 騎手は地面から高く座っていたため、危険だった。
D. D. それはほとんどの人にとって高すぎた。
✅ 正确答案
C. Riders sat high above the ground, so it was dangerous.