Good morning, everyone. Today we're going to discuss the history of the bicycle. The first two-wheeled vehicle, called a draisine, was invented in Germany in 1817. It had no pedals; riders pushed their feet against the ground. In the 1860s, pedals were added to the front wheel, leading to the high-wheel bicycle, which was popular but dangerous. By the 1880s, the 'safety bicycle' with a chain drive and equal-sized wheels became the standard. Interestingly, the safety bicycle greatly increased the popularity of cycling among women, as it allowed them to wear more practical clothing.
❓ Lợi thế chính của xe đạp an toàn mà giảng viên đề cập là gì?
A. Việc sản xuất rẻ hơn so với các mẫu trước đó.
B. Nó an toàn hơn và dễ tiếp cận hơn đối với phụ nữ.