1.a.(2020·新高考全国卷Ⅰ)You don't need to apologize for a minor slip. 错误;纰漏
b.(北京卷)Feeling safe and relaxed will help you to slip into dreams. 进入;陷入
2.(湖北卷)I've always had a good grasp of English language thanks to my mum who stared me reading when I was very little. 理解;领会
3.(重庆卷)Cultural differences occur wherever you go. 出现;存在