如图,画出△ABC关于点O对称的△A′B′C′(不用写作法,但要保留作图痕迹).
考点分析:
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党的十六大提出全面建设小康社会,力争国民生产总值到2020年比2000年翻两番,在21世纪的头二十年(2001-2020年),要实现这一目标,以十年为单位计算,求每个十年的国民生产总值的平均增长率是多少?
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已知a=2-
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103000335298615136/SYS201311030003352986151017_ST/0.png)
,求代数式(7+4
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103000335298615136/SYS201311030003352986151017_ST/1.png)
)a
2+(2+
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103000335298615136/SYS201311030003352986151017_ST/2.png)
)a的值.
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利用计算器计算,把答案填在横线上:
(1)
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103000335298615136/SYS201311030003352986151016_ST/0.png)
=______;
(2)
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103000335298615136/SYS201311030003352986151016_ST/1.png)
=______;
(3)
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103000335298615136/SYS201311030003352986151016_ST/2.png)
=______;
(4)
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103000335298615136/SYS201311030003352986151016_ST/3.png)
=______;
(5)
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103000335298615136/SYS201311030003352986151016_ST/4.png)
=______;
(6)猜想
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103000335298615136/SYS201311030003352986151016_ST/5.png)
=______.(用含n的式子表示)
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把一枚均匀的分别标有1,2,3,4,5,6点数的正六面体骰子掷一次,则掷到点数为5的概率是( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103000335298615136/SYS201311030003352986151015_ST/0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103000335298615136/SYS201311030003352986151015_ST/1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103000335298615136/SYS201311030003352986151015_ST/2.png)
D.
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