题目

如图,足球图片正中的黑色正五边形的内角和是( ) A.180°           B.360°            C.540°           D.720° 答案:C【解答】解:黑色正五边形的内角和为:(5﹣2)×180°=540°,Just in front of our house____with a history of l,000 years.A.does a tall tree standB.stands a tall treeC.a tall tree is standingD.a tall tree stands
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