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.
❓ Каково было главное преимущество безопасного велосипеда, представленного в 1880-х годах?
A. У него было более удобное сиденье.
B. Он был легче и удобнее для переноски.
C. Он был более устойчивым благодаря колёсам одинакового размера и цепной передаче.
D. Он мог развивать скорость выше, чем у более ранних моделей.
✅ 正确答案
It was more stable because of its equal-sized wheels and chain drive.