如图所示，一个内壁光滑的圆锥筒的轴线垂直于水平面，圆锥筒固定不动，有两个质量相同的小球A和B紧贴着内壁分别在图中所示的水平面内做匀速圆周运动，则下列说法正确的是（   ）

    Lantern Festival falls____the fifteenth day of the first lunar month. This is the first full moon of the new year, representing unity and perfection， this festival also marks the____(office)end of the long holiday.

    There are many legends(传说)related to the origins of Lantern Festival.

    According to one legend, once in ancient times, a celestial(天堂的)swan came into the human world ____ it was shot down by a hunter. The Jade Emperor, the ____(high)god in Heaven, was angry about this. He____ (plan)an attack on Earth on the fifteenth day of the first lunar month, with orders to destroy all people and animals. But the other celestials ____ (disagree) with him and risked their lives ____(warn)the people of Earth. As ____result, before and after the fifteenth day of the first month, every family hung red lanterns outside their doors and set ____firecrackers and fireworks(烟花爆竹), giving the impression that their homes were already burning. By successfully ____(trick)the Jade Emperor in this way, human beings were saved from destruction.

读《曹刿论战》，对“夫战，勇气也”理解正确的项 ( )

商店同时以60元的价格卖出两件衣服，其中一件盈利25%，另一件亏损25%，则卖这两件衣服总的是（   ）