问题 填空题

若Z为复数且|Z-1|=|Z+1|,则|Z-1|的最小值是______.

答案

∵复数z适合|Z-1|=|Z+1|,

∴复数z到(-1,0)点的距离与到(1,0)的距离相等,

∴复数z在(-1,0)与(1,0)两点的连线的中垂线上,即y轴.

|Z-1|的最小值,就是求(1,0)点到y轴的距离,:1.

故答案为:1.

阅读理解

Several parents and children escaped the summer heat and enjoyed a refreshing “Leap Into a Good Book”.About 30 children and parents gathered as volunteers for both agencies.

After the readings,refreshments (点心) were offered and children and parents were given books,a gift bag and a bookmark with information on adult literacy (读写能力) programs.

Learn to Read of Northwest Florida Inc.and Even Start coordinated the event with hopes that combining their programs will help target functionally illiterate adults and their families.A functionally illiterate adult is one who has reading skills below a seventh­grade level.That often means they have difficulty filling out job applications,understanding a lease,reading medication labels or to their children.

Merelin Hernandez,9,a fourth­grader at Warrington Elementary School,understands the importance of reading.She also says it makes her happy when she is bored.“Reading helps me go to another grade,”she says.“I feel proud when I get a B because then I know I am reading well.”Monae Walker,7,a student at Oakcrest Elementary School,says reading teaches her and makes her happy.

Learn to Read of Northwest Florida Inc.provides one­on­one tutoring for basic reading and writing skills to adults 16 and older who are not in school.Tutors go through a 12­hour workshop and tutor their students 3 hours per week.The program currently has 150 active tutors.

Even Start is a family education program at McMillan Learning Center,which offers adult education classes and infant,toddler and prekindergarten services at no cost to families.Linda Harris,a teacher in charge of the Escambia Even Start program,says the program equips parents so they can help their children.

小题1:The event “Leap Into a Good Book”________.

A.was mainly held by Learn to Read

B.targeted functionally literate parents

C.was attended by about 30 volunteers

D.was held to enjoy reading in summer小题2:According to the passage,a functionally illiterate adult________.

A.has skills below a seventh­grade level

B.has never got school education

C.has no ability to recognize English words

D.can’t fill out a job application小题3:According to the passage,Monae Walker________.

A.was attending the one­on­one tutoring

B.was a school­leaver

C.was having a good time there

D.read books with her parents小题4:According to the passage,Even Start can________.

A.make parents able to help their children

B.educate children how to use words

C.offer some services for families in life

D.offer a good place for children

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