摘要: When we send a letter or a postcard, we have to put stamps on the envelope or on the card. When did people first begin to use stamps? Who was the first to think of this idea? Here is some information
(来源:文章屋网 www.wzu.com)
摘要: When we send a letter or a postcard, we have to put stamps on the envelope or on the card. When did people first begin to use stamps? Who was the first to think of this idea? Here is some information
(来源:文章屋网 www.wzu.com)