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(2010•安顺)小华拿一个矩形木框在阳光下玩,矩形木框在地面上形成的投影不可能...
(2010•安顺)小华拿一个矩形木框在阳光下玩,矩形木框在地面上形成的投影不可能的是( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019110459848635658/SYS201310191104598486356005_ST/images0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019110459848635658/SYS201310191104598486356005_ST/images1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019110459848635658/SYS201310191104598486356005_ST/images2.png)
D.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019110459848635658/SYS201310191104598486356005_ST/images3.png)
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