Lookatthecentercircl的精选

问题详情：阅读理解 LookatthecentercirclesofDiagram（图）AandDiagramB．Whichofthecentrecircleslookslarger?TakeafirstlookandyouprobablythinkthatthecentrecircleinDiagramAissmallerthanthatinDiagramB．Infact，theyare...