Good morning, everyone. Today we'll discuss the history of the bicycle. The first bicycle-like vehicle, called a draisine, appeared in 1817. It had no pedals, and riders pushed their feet against the ground. In the 1860s, pedals were added to the front wheel, creating the 'penny-farthing', which had a very large front wheel for speed. However, it was dangerous. In 1885, the 'safety bicycle' was introduced with two equal-sized wheels and a chain drive to the rear wheel, making it much safer and more practical. This design became the basis for modern bicycles.
❓ Lợi thế chính của xe đạp an toàn ra đời năm 1885 là gì?
A. A. Nó có bánh trước lớn hơn để đạt tốc độ cao.
B. B. Nó an toàn hơn và thực tế hơn.
C. C. Đây là chiếc xe đạp đầu tiên không có bàn đạp.