问题 单项选择题 A2型题

某乡5000户约2万人口,欲抽其1/5人口进行某病调查。随机抽取第1户,随后每隔5户抽取1户,抽到户的每个成员均进行调查。这种抽样方法称为()

A.分层抽样

B.系统抽样

C.整群抽样

D.简单抽样

E.多级抽样

答案

参考答案:B

解析:系统抽样又称机械抽样,是按照一定顺序,机械地每隔若干单位抽取一个单位的抽样方法。

阅读理解

“Yes, I’ll be ready at nine in the morning. Goodbye, dear, and thanks again.” It had not been an easy telephone call for Mrs. Robson to make. Her daughter had been very kind, of course, and had immediately agreed to pick her up and drive her to the station, but Mrs. Robson hated to admit that she needed help. Since her husband had died ten years before, she had always been proud of her independence. She had continued to live in their little house, alone.

On this evening, however, she was standing at her living-room window, staring out at the SOLD notice in the small front garden. Her feelings were mixed. Of course, she was sad at the thought of leaving the house, as it was full of so many memories. But at the same time she was looking forward to spending her last years near the sea, back in the little seaside town where she had been born. With the money from the sale of the house, she had bought a little apartment there. She turned from the living room window, and looked round at the walls. There was a small fish tank, with two goldfish in it. When asked why, her husband used to say, “It’s nice to have something alive in the room.” Since he had passed away, she had always kept some goldfish, had always had “something alive in the room.”

The next morning, as her train was pulling out of the station, Mrs. Robson called to her daughter, “Kate, you won’t forget to collect the goldfish, will you? The children will love them. It’s …” “I know,” Kate interrupted gently, “It’s nice to have something alive in the room.” 

小题1:According to the passage, we know that Mrs. Robson _________.

A.was tired of living alone

B.was not liked by her daughter

C.did not like asking people for help

D.did not want to be visited by her daughter小题2:Mrs. Robson was going to _______.

A.be in hospital

B.live with her daughter

C.travel abroad alone

D.live where she was born小题3:The feelings of Mrs. Robson on her last night in the house were________.

A.sad and hopeful

B.regretful and excited

C.sad and regretful

D.excited and hopeful

名词解释