Today we're going to discuss the history of the bicycle. The first bicycle, invented in the early 19th century, had no pedals and was pushed along by the rider's feet. It wasn't until the 1860s that pedals were added to the front wheel. However, this design was unstable and difficult to ride. In 1885, the 'safety bicycle' was introduced with a chain drive and two equal-sized wheels, making it much safer and more practical. This design quickly became popular, and by the 1890s, bicycles were mass-produced, allowing ordinary people to travel independently for the first time.
❓ ¿Qué hizo que la 'bicicleta de seguridad' de 1885 fuera diferente de los diseños anteriores?
A. A. No tenía pedales y se impulsaba con los pies.
B. B. Tenía pedales unidos a la rueda delantera.
C. C. Tenía transmisión por cadena y dos ruedas del mismo tamaño.
D. D. Fue la primera bicicleta producida en masa.
✅ 正确答案
C. It had a chain drive and two equal-sized wheels.