Today we're going to discuss the history of the bicycle. Although many people assume the bicycle was invented in the 19th century, its origins actually go back further. The first known two-wheeled vehicle, called a 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. However, it was not until the 1880s that the chain drive and pneumatic tires were introduced, making bicycles safer and more comfortable. This led to a boom in cycling popularity, especially among women, as it provided affordable personal transport.
❓ Theo bài giảng, điều gì đã làm cho xe đạp an toàn hơn và thoải mái hơn?
A. Việc bổ sung bàn đạp vào bánh trước
B. Việc sử dụng khung gỗ
C. Sự ra đời của bộ truyền động xích và lốp hơi
D. Phát minh ra xe draisine
✅ 正确答案
The introduction of the chain drive and pneumatic tires