Today's lecture is about the history of the postage stamp. The first adhesive stamp, the Penny Black, was issued in Britain in 1840. Its design featured a profile of Queen Victoria. Interestingly, the stamp was printed in black, which made cancellations difficult to see, so it was soon replaced by the Penny Red. The invention of stamps revolutionized mail delivery, as previously the recipient, not the sender, paid for postage. This change shifted the cost burden and made sending letters more convenient for the general public.
❓ Tại sao Penny Black lại bị thay thế bởi Penny Red?
A. Vì tem màu đen quá đắt để sản xuất.
B. Vì màu đen khiến khó nhìn thấy dấu bưu điện.
C. Bởi vì Nữ hoàng Victoria ưa thích màu đỏ.
D. Bởi vì tem đỏ được công chúng ưa chuộng hơn.
✅ 正确答案
Because the black colour made it hard to see the postmark.