Good morning, class. Today we're going to discuss the history of the postal service. Before the invention of the postage stamp in 1840, people paid to send letters, but the cost was often borne by the recipient. This system was inefficient and caused many refusals. The first adhesive stamp, the Penny Black, was introduced in Britain and featured a portrait of Queen Victoria. It cost one penny and could be used to send a letter weighing up to half an ounce anywhere in the country. Interestingly, the stamp was printed in black, which made it difficult to see cancellation marks, so it was soon replaced by the Penny Red in 1841.
❓ 为什么黑便士会被红便士取代？
A. A. 黑色制作成本过高，难以生产。
B. B. 黑色邮票并不受公众欢迎。
C. C. 黑色邮票上的注销标记不够清晰可见。
D. D. 红色邮票可用于更重的信件。
✅ 正确答案
C. The cancellation marks were not clearly visible on the black stamp.