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
