Good morning, everyone. Today we're going to discuss the history of the bicycle. It's often said that the first bicycle was invented in the early 19th century, but its design was quite different from what we see today. The earliest model, called the 'velocipede', had no pedals and was pushed along by the rider's feet. Later, in the 1860s, pedals were added to the front wheel, which made riding faster but also more dangerous. It wasn't until the 1880s, with the invention of the chain drive and the safety bicycle, that cycling became popular among ordinary people. The safety bicycle had two wheels of equal size and a chain connecting the pedals to the rear wheel, which provided more stability and comfort.
❓ What was the main improvement of the safety bicycle in the 1880s?
A. It had a larger front wheel for speed.
B. It was lighter and easier to carry.
C. It used a chain drive and equal-sized wheels for stability.
D. It had no pedals and was pushed by the feet.
✅ 正确答案
It used a chain drive and equal-sized wheels for stability.