Today we're going to discuss the history of the bicycle. The first true bicycle, called the 'draisine', was invented in 1817 by a German baron. It had no pedals; riders pushed their feet against the ground. In the 1860s, French inventors added pedals to the front wheel, creating the 'velocipede'. However, it was very uncomfortable due to its rigid frame. Later, the 'penny-farthing' with a huge front wheel became popular, but it was dangerous. Finally, in 1885, the 'safety bicycle' with two equal-sized wheels and a chain drive was introduced, making cycling much safer and more practical for everyday use.
❓ ¿Cuál fue una característica clave de la bicicleta de seguridad introducida en 1885?
A. A. No tenía pedales.
B. B. Tenía una rueda delantera enorme.
C. C. Tenía dos ruedas del mismo tamaño y una transmisión por cadena.
D. D. Tenía un marco rígido sin ninguna suspensión.
✅ 正确答案
C. It had two equal-sized wheels and a chain drive.