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数列{an}中,a3=2,a5=1,如果数列是等差数列,则a11=( ) A. ...
数列{a
n}中,a
3=2,a
5=1,如果数列
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是等差数列,则a
11=( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101148765322687/SYS201311031011487653226009_ST/1.png)
B.0
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131103101148765322687/SYS201311031011487653226009_ST/2.png)
D.
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考点分析:
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