问题 填空题

下列说法正确的是______(填序号)   

①数据3,4,4,7,3的众数是4.           ②数据0,1,2,5,a的中位数是2.

③一组数据的众数和中位数不可能相等.     ④数据0,5,-7,-5,7的中位数和平均数都是0.

答案

解;①数据3,4,4,7,3的众数是4和3,故本选项错误,

②数据0,1,2,5,a的中位数不确定,故本选项错误,

③一组数据的众数和中位数有可能相等,故本选项错误,

④数据0,5,-7,-5,7的中位数和平均数都是0,故本选项正确,

说法正确的是④.

故答案为:④.

阅读理解

1.Needed:Full time secretary position available.Applicants should be able to type 60 words a minute.No computer skills required.Apply in person at United Business Ltd.,17 Browning Street.
2.Are you looking for a part time job?We require 3 part time shop assistants to work during the evening.No experience is required,applicants should be between 18 and 26.Call 366-76564 for more information.
3.Computer trained secretaries:Do you have experience working with computers?Would you like a full time position working in an exciting new company?If your answer is yes,call 457-896754.
4.Teacher needed:Tommy's Kindergarten needs 2 teachers/trainers to help with classes from 9 a.m.to 3 p.m.Applicants should have appropriate licenses(许可证).For more information visit Tommy's Kindergarten in Leicester Square No.56.
 
5.Part time wor
available:We are looking for retired adults who would like to work part time at the weekend.Responsibilities include answering the telephone and giving customers information.For more information contact Nile Airlines by calling 345-674132.
6.University positions open:The University of Cumberland is looking for 4 teaching assistants to help with homework correction.Applicants should have a degree in one of the following:Political Science,Computer Science,Economics
or History.Please contact the University of Cumberland for more information.
小题1:Suppose you are a first-year student who wants to earn some money to pay your university expenses,you may_________.
A.call 345-674132
B.call 366-76564
C.contact United Business Ltd
D.contact Cumberland University
小题2:According to the advertisements,which of the following is TRUE?
A.Experience is required if you want to work as a shop assistant.
B.You may be employed by United Business Ltd.if you can type fast enough.
C.You are sure to get a job at Tommy's Kindergarten if you have a degree.
D.Nile Airlines needs a peson to deal with customers' information.
小题3:Who are the advertisements intended for?
A.Job hunters.B.College graduates.
C.Retired teachers.D.Computer majors.
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