Good morning, everyone. Today we're going to discuss the history of the bicycle. The first bicycle, called the 'Draisine', was invented in 1817 by a German baron. It had no pedals; riders pushed their feet against the ground to move. In the 1860s, pedals were added to the front wheel, creating the 'penny-farthing'. However, these were dangerous because riders sat high above the ground. The modern safety bicycle, with two equal-sized wheels and a chain drive, appeared in the 1880s. This design became popular because it was much safer and easier to ride, especially for women, who could now cycle in long skirts.
❓ Theo bài giảng, ưu điểm chính của xe đạp an toàn so với các mẫu xe trước đó là gì?
A. A. Nó nhẹ hơn và dễ mang theo hơn.
B. B. Nó có chỗ ngồi thoải mái hơn.
C. C. Nó an toàn hơn và dễ đi hơn.
D. D. Nó có thể được cưỡi nhanh hơn trên những con đường bằng phẳng.