Good morning, everyone. Today we're going to discuss the history of the bicycle. Now, many people assume that the bicycle was invented in the 19th century, but in fact, the first two-wheeled vehicle, called the draisine, appeared in 1817 in Germany. It was made of wood and 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, creating the velocipede. However, it wasn't until the 1880s that the chain drive and pneumatic tires were introduced, making bicycles much safer and more comfortable. So, the key point to remember is that the modern bicycle design we recognize today didn't emerge until the late 19th century.
❓ 강의에 따르면, 자전거가 오늘날 우리가 알고 있는 현대적인 디자인과 처음으로 비슷해진 시기는 언제인가요?
A. 1817년, 드레이진이 발명되었을 때
B. 1860년대에 페달이 추가되었을 때
C. 1880년대에 체인 드라이브와 공기 타이어의 도입과 함께
D. 20세기 초반에
✅ 正确答案
In the 1880s, with the introduction of chain drive and pneumatic tires