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🎧 Listening Transcript

Today we're going to look at the history of the bicycle. Although 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 a draisine, was invented in 1817 by a German baron. It had no pedals, and riders had to push their feet against the ground to move forward. Later, in the 1860s, pedals were added to the front wheel, creating the 'boneshaker'. However, it wasn't until the 1880s, with the invention of the chain drive and pneumatic tires, that bicycles became safe and comfortable for everyday use.
❓ ¿Cuál era la principal limitación del draisiano, el primer vehículo de dos ruedas?

✅ 正确答案

B. It had no pedals.

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