In today's lecture, we're discussing the history of the bicycle. The first practical bicycle, known as the 'velocipede', was invented in the 1860s in France. It had wooden wheels and pedals attached directly to the front wheel, which made it difficult to ride. Later, in the 1870s, the 'penny-farthing' became popular, featuring a large front wheel and a small rear wheel. However, it was dangerous because riders sat high above the ground. The modern safety bicycle, with two equal-sized wheels and a chain drive, emerged in the 1880s, making cycling much safer and more accessible to the general public.
❓ 강의에 따르면, 페니파딩 자전거의 주요 문제점은 무엇이었나요?
A. A. 나무 바퀴가 달려 있어서 불편했다.
B. B. 직접 연결 방식 때문에 페달을 밟기가 어려웠다.
C. C. 라이더들은 지면에서 높이 앉아 있어서 위험했다.
D. D. 대부분의 사람들이 사기에는 너무 비쌌다.
✅ 正确答案
C. Riders sat high above the ground, making it dangerous.