一．单项选择 （15分）
1. In ____ accident _____ knowledge of first aid can make _____ real difference.
A. an; a; a B. the; a; the C. an; the; 不填 D. a; a; 不填
2. When you talk about a person’s _____, you are referring to the country, race, or social class of their parents or ancestors.
A. origin B. nationality C. generation D. relation
3. —How was your recent trip to England?
—I’ve never had ______ one before.
A. the most pleasant B. a more pleasant
C. a most pleasant D. a pleasant
【答案】B
【解析】
试题分析：句意：--你最近去英国的旅行怎么样？--我从没有过更加愉快的旅行了。这里是是否定词和形容词的比较级连用，表示最高级的含义，所以选B。
