题目

如果A是B的必要不充分条件，B是C的充分必要条件，D是C的充分不必要条件，那么A是D的（ ）A.必要不充分条件B.充分不必要条件C.充要条件D.既不充分也不必要条件 答案：解析:ABCD.答案：A阅读下列短文，从每小题的三个选项中选出最佳选项。 Hello, my name's Kitty. I have a big family. My grandparents are old. They are thin. David is my father. He is fat. He is a policeman(警察). This is my mother. Her name is May. She's tall and thin. She is a nurse. John is my uncle. He has a pair of glasses. He is a doctor. He can help people. Sue is my aunt. She has big eyes. She likes kids. She is a teacher. I have one cousin. His name is Peter. John and Sue are his parents.【1】Kitty's grandparents are old. They are . ( )A.youngB.thinC.fat【2】Kitty's father is fat. He is a . ( )A.doctorB.teacherC.policeman【3】John is Kitty's . ( )A.fatherB.brotherC.uncle【4】Kitty has cousin. ( )A.oneB.twoC.three