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.
❓ Tại sao Penny Black lại bị thay thế bởi Penny Red?
A. A. Màu đen quá đắt để sản xuất.
B. B. Con tem màu đen không được công chúng ưa chuộng.
C. C. Dấu hủy không được nhìn thấy rõ ràng trên con tem màu đen.
D. D. Con dấu màu đỏ có thể được sử dụng cho những lá thư nặng hơn.
✅ 正确答案
C. The cancellation marks were not clearly visible on the black stamp.