Today we're going to discuss the history of the postal service. In the 19th century, the introduction of the postage stamp revolutionized communication. Before stamps, the recipient, not the sender, usually paid for the mail. This often led to refusal of delivery. The first adhesive stamp, the Penny Black, was issued in Britain in 1840. It featured a portrait of Queen Victoria and cost one penny. Interestingly, it was not printed in black for long, because the black ink was difficult to cancel with a black postmark. Therefore, later stamps were printed in other colors, like the Penny Red.
❓ 为什么黑便士邮票会被其他颜色的邮票取代？
A. A. 黑色邮票的生产成本过高。
B. B. 黑色使得邮戳难以辨认。
C. C. 维多利亚女王的肖像在黑色中并不清晰。
D. D. 这枚邮票并不受公众欢迎。
✅ 正确答案
B. The black color made it difficult to see the cancellation mark.