Good morning. Today we're going to discuss the history of the bicycle. While many people credit the 19th-century inventors for its creation, the first two-wheeled vehicle actually appeared in 1817, invented by a German baron named Karl von Drais. His machine, called the 'draisine', had no pedals; riders pushed their feet against the ground to move. Later, in the 1860s, pedals were added to the front wheel in France. Interestingly, the iconic high-wheeled 'penny-farthing' became popular in the 1870s, but it was dangerous because riders sat high above the ground. It wasn't until the 1880s that the safety bicycle, with two equal-sized wheels and a chain drive, made cycling accessible to the general public.
❓ 강의에 따르면, '페니파딩' 자전거의 주요 단점은 무엇이었나요?
A. A. 대부분의 사람들이 사기에는 너무 비쌌다.
B. B. 그것은 브레이크가 없었고 통제하기 어려웠다.
C. C. 기수는 지면에서 높이 앉아 있어 위험했다.
D. D. 라이더들이 발을 땅에 대고 밀어야 했다.
✅ 正确答案
C. The rider sat high above the ground, making it dangerous.