题目

(1)满足条件|z－i|＝|3＋4i|的复数z在复平面上对应点的轨迹是              ( ) A．一条直线                 B．两条直线 C．圆                      D．椭圆 (2)已知复数(x－2)＋yi(x，y∈R)的模为，则的最大值为________． 答案：(1)C (2)根据短文内容，判断正(T)误(F)。Today is Saturday. Nancy wants to see her grandma. Her grandma is ill. She is in hospital（医院）. Nancy goes to the garden（花园）and gets some nice flowers. Nancy and her mum go to the hospital.Nancy says, “The flowers are for you, Grandma.”“Thank you, Nancy. I am coming home tomorrow. I love you,” Grandma says.【1】Nancy’s grandma is not so good. （______）【2】Nancy’s grandma is in the garden. （______）【3】The flowers are very beautiful. （______）【4】Nancy’s grandma is coming home on Monday. （______）【5】Nancy loves her grandma. （______）