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🎧 Listening Transcript

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, featuring a chain drive to the rear wheel, which made cycling much safer and more comfortable. This design quickly became popular, and by the 1890s, cycling had become a widespread leisure activity and mode of transport.
❓ 是什么让安全自行车比早期型号更安全?

✅ 正确答案

B. It had a chain drive to the rear wheel.

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