Good morning, everyone. Today we're going to look at the history of the bicycle. Now, you might think that the bicycle was invented in the 19th century, and you'd be right. However, the first two-wheeled vehicle, called a 'draisine', appeared in 1817, invented by Karl von Drais. It had no pedals; you pushed it with your feet. Then, in the 1860s, pedals were added to the front wheel in France, creating the 'velocipede'. But it was still very uncomfortable. The big change came in 1885 when John Kemp Starley designed the 'safety bicycle' with a chain drive to the rear wheel and two equal-sized wheels, which made cycling much safer and more practical. This design is basically what we still use today.
❓ ¿Cuál fue la principal ventaja de la 'bicicleta de seguridad' introducida en 1885?
A. Tenía pedales en la rueda delantera para una mejor velocidad.
B. Era más ligero y más fácil de llevar.
C. Tenía transmisión por cadena y ruedas iguales, lo que la hacía más segura.
D. Fue la primera bicicleta en tener dos ruedas.
✅ 正确答案
It had a chain drive and equal wheels, making it safer.