Today we're going to discuss the history of the bicycle. While many people think of the bicycle as a relatively modern invention, its origins actually date back to the early 19th century. The first two-wheeled vehicle, called the 'draisine', was invented by Karl von Drais in 1817. It had no pedals; riders pushed themselves along with their feet. Later, in the 1860s, pedals were added to the front wheel, giving rise to the 'penny-farthing' with its large front wheel. However, it wasn't until the 1880s that the 'safety bicycle' with a chain drive and two equal-sized wheels became popular, making cycling much safer and more accessible to the general public.
❓ Điều gì đã làm cho 'xe đạp an toàn' trở nên phổ biến vào những năm 1880?
A. A. Nó có bánh trước lớn và chạy nhanh.
B. B. Đây là chiếc xe đạp đầu tiên có bàn đạp.
C. C. Nó có bộ truyền động xích và các bánh xe có kích thước bằng nhau, giúp an toàn hơn.
D. D. Nó được phát minh bởi Karl von Drais và không cần bàn đạp.
✅ 正确答案
C. It had a chain drive and equal-sized wheels, making it safer.