Today we're going to discuss the history of the bicycle. The first two-wheeled vehicle, called the 'velocipede', appeared in the early 19th century. It had no pedals, so riders pushed their feet along the ground. In the 1870s, the 'penny-farthing' became popular, with a huge front wheel and a small rear wheel. However, it was dangerous because riders sat high above the ground. Then in 1885, the 'safety bicycle' was invented. It had two equal-sized wheels and a chain drive, making it much safer and more practical. By the early 20th century, bicycles had become a common mode of transport for ordinary people.
❓ What was the main problem with the penny-farthing bicycle?
A. A. It was too heavy to ride uphill.
B. B. It had no pedals, making it slow.
C. C. Riders sat high above the ground, so it was dangerous.
D. D. It was too expensive for most people.
✅ 正确答案
C. Riders sat high above the ground, so it was dangerous.