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.
❓ 페니 블랙이 페니 레드로 대체된 이유는 무엇인가?
A. A. 검은색은 생산하기에 너무 비쌌다.
B. B. 검은 우표는 대중에게 인기가 없었다.
C. C. 검정 우표에서 취소 도장이 명확하게 보이지 않았다.
D. D. 빨간 우표는 더 무거운 편지에 사용될 수 있었다.
✅ 正确答案
C. The cancellation marks were not clearly visible on the black stamp.