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如图所示,半径为1的圆和边长为3的正方形在同一水平线上,圆沿该水平线从左向右匀速...
如图所示,半径为1的圆和边长为3的正方形在同一水平线上,圆沿该水平线从左向右匀速穿过正方形,设穿过时间为t,正方形除去圆部分的面积为S(阴影部分),则S与t的大致图象为( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022163109984692606/SYS201310221631099846926009_ST/images0.png)
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022163109984692606/SYS201310221631099846926009_ST/images1.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022163109984692606/SYS201310221631099846926009_ST/images2.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022163109984692606/SYS201310221631099846926009_ST/images3.png)
D.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022163109984692606/SYS201310221631099846926009_ST/images4.png)
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