第21题: [单项选择]Which of the following is NOT an element of the code of etiquette A. Respect for age. B. Formal compliments. C. Proper introductions at social functions. D. Eating with a fork rather than fingers. 参考答案:D 答案解析:四个选项中,只有D不算是礼仪。A、B、C可在第二、三、六段中找到。有关使用刀叉用餐,第四段中提到,在叉子发明前,人们必须保持手指干净,以便用餐。并没有说用刀叉用餐是礼仪的一部分。