Good morning, everyone. Today we're going to discuss the history of the bicycle. Now, most people think the bicycle was invented in the 19th century, but its origins actually go back further. The first two-wheeled vehicle, called a draisine, was created by a German baron, Karl von Drais, in 1817. It had no pedals; riders pushed their feet against the ground. Later, in the 1860s, pedals were added to the front wheel in France, leading to the 'boneshaker'. However, the major breakthrough came in 1885 when John Kemp Starley introduced the 'Rover' safety bicycle, which had a chain-driven rear wheel and equal-sized wheels, making it much safer and more practical. This design became the basis for modern bicycles.
❓ According to the lecture, what was the major innovation of the Rover safety bicycle?
A. A. It was the first bicycle to have pedals.
B. B. It used a chain to drive the rear wheel and had equal-sized wheels.
C. C. It was made entirely of wood and had no metal parts.
D. D. It was the first two-wheeled vehicle, invented in 1817.
✅ 正确答案
B. It used a chain to drive the rear wheel and had equal-sized wheels.