Good morning. Today we're going to discuss the history of the bicycle. Now, many people think the bicycle was invented in the 19th century, but in fact, the first two-wheeled vehicle, called a 'velocipede', appeared in the early 1800s. However, it had no pedals and was pushed along by the feet. The real breakthrough came in the 1860s when pedals were added to the front wheel. This design, known as the 'boneshaker', was uncomfortable but popular. Later, in the 1880s, the 'safety bicycle' with a chain drive and two equal-sized wheels was introduced, making cycling much safer and more accessible to the general public.
❓ Lợi ích chính của xe đạp an toàn được giới thiệu vào những năm 1880 là gì?
A. A. Đây là chiếc xe đạp đầu tiên có bàn đạp.
B. B. Nó có ghế ngồi thoải mái hơn.
C. C. Việc đi lại bằng xe đạp an toàn và dễ dàng hơn đối với người dân thường.
D. D. Nó nhẹ hơn và nhanh hơn so với các mẫu trước đó.
✅ 正确答案
C. It was safer and easier for ordinary people to ride.