【正确答案】：
PIG/PORK, SHEEP/MUTTON
IN OLD ENGLISH, ANIMALS AND THEIR MEAT SHARED THE SAME NAME. WITH THE NORMAN CONQUER AND BORROWING OF CORRESPONDING FRENCH WORDS, THE ENGLISH WORDS WERE KEPT ONLY FOR LIVE ANIMALS AND THE FRENCH WORDS FOR THE ANIMALS KILLED AND BROUGHT TO THE TABLE. 
【题目解析】：猪/猪肉、绵羊/羊肉在古英语中，动物和它们的肉同名。随着诺曼征服并借用了相应的法语单词，英语单词只为活的动物保留，法语单词则为被杀死并带到餐桌上的动物保留。