Today we're going to discuss the history of the bicycle. Early bicycles, developed in the 19th century, had wooden frames and iron tires. The 'penny-farthing', popular in the 1870s, featured a large front wheel and a small rear wheel, which made it difficult to ride safely. In 1885, John Kemp Starley introduced the 'safety bicycle' with two equal-sized wheels and a chain drive, allowing riders to keep both feet on the ground when stopping. This design greatly improved stability and led to a cycling boom in the 1890s. By the early 20th century, bicycles became a common mode of transport, especially for workers commuting to factories.
❓ What was the main advantage of the safety bicycle introduced in 1885?
A. A. It had a larger front wheel for speed.
B. B. It allowed riders to stop with both feet on the ground.
C. C. It was made of lighter materials like aluminum.
D. D. It had a motor for easier pedaling.
✅ 正确答案
B. It allowed riders to stop with both feet on the ground.