【单选题】The little girl could not forget Miss Lois in her life mainly because . A. Miss Lois was very beautiful B. Miss Lois could sing songs very well C. Miss Lois was very young D. Miss Lois made a great influence on her

如果向某个组分配了权限，则作为该组成员的用户也具有这一权限。例如，如果Backup Operators组有此权限，而Lois又是该组成员，则Lois也有此权限。

令 I 表示“Lois 工作晚了”，令 j 表示“John工作晚了“，令 e 表示“他们在家吃饭”，则命题“若 Lois 或 John 没有工作晚，则他们在家吃饭。”的逻辑表达式是：

如果向某个组分配了权限，则作为该组成员的用户也具有这一权限。例如，如果BackupOperators组有此权限，而Lois也有此权限。（）

Lois is a self-employed pet sitter. She can make 20 “housecalls” per day. She is considering hiring her sister Dora to work for her. Both she and Dora can visit 35 houses per day. What is Dora’s marginal product?_________. A: 22.5 B: 15 C: 55 D: 35

1.I didnt find myself very interested in music until Miss Lois came into my life。 A: 露易丝小姐走进了我的生活，我发现自己对音乐感兴趣。 B: 直到露易丝小姐走进我的生活，我才发现自己对音乐感兴趣。 C: 在露易丝小姐走进我的生活之前，我就发现自己对音乐感兴趣。 D: 我对音乐感兴趣，一直到露易丝小姐走进我的生活。