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(2011•保康县模拟)如图,在直角梯形ABCD中,AD∥BC,∠C=90°,C...
(2011•保康县模拟)如图,在直角梯形ABCD中,AD∥BC,∠C=90°,CD=6cm,AD=2cm,动点P、Q同时从点B出发,点P沿BA,AD,DC运动到点C停止,点Q沿BC运动到C点停止,两点运动时的速度都是1cm/s,而当点P到达点A时,点Q正好到达点C.设P点运动的时间为t(s),△BPQ的面积为y(cm
2).下图中能正确表示整个运动中y关于t的函数关系的大致图象是( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021230723832139879/SYS201310212307238321398008_ST/images0.png)
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021230723832139879/SYS201310212307238321398008_ST/images1.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021230723832139879/SYS201310212307238321398008_ST/images2.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021230723832139879/SYS201310212307238321398008_ST/images3.png)
D.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021230723832139879/SYS201310212307238321398008_ST/images4.png)
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