2015数学一轮复习迎战高考:5-2等差数列及其前n项和(带解析)

适用年级:高三
试卷号:593077

试卷类型:课时练习
试卷考试时间:2017/8/22

1.单选题(共3题)

1.
若等差数列的前5项之和,且,则()
A.12B.13C.14D.15
2.
在等差数列中,,其前项和为,若,则的值等于()
A.2011B.-2012C.2014D.-2013
3.
已知等差数列{an}满足a2=3,Sn-Sn-3=51(n>3),Sn=100,则n的值为( )
A.8B.9
C.10D.11

2.选择题(共2题)

4.根据短文内容,选择最佳答案。

    My name is Tom. I'm nine. This is my mother(母亲). Her name's Linda Johnson. Her telephone number is 13052864515. And this is my father(父亲). His name is Mike Johnson. His phone number is 13120884699. And this is my sister(姐妹). What's her name? Her name is Mary. Look! The boy is my brother(兄弟) Nick. Mary is eight and Nick is six.

5.根据短文内容,选择最佳答案。

    My name is Tom. I'm nine. This is my mother(母亲). Her name's Linda Johnson. Her telephone number is 13052864515. And this is my father(父亲). His name is Mike Johnson. His phone number is 13120884699. And this is my sister(姐妹). What's her name? Her name is Mary. Look! The boy is my brother(兄弟) Nick. Mary is eight and Nick is six.

试卷分析
  • 【1】题量占比

    单选题:(3道)

    选择题:(2道)

  • 【2】:难度分析

    1星难题:0

    2星难题:0

    3星难题:0

    4星难题:0

    5星难题:0

    6星难题:0

    7星难题:0

    8星难题:0

    9星难题:3