阅读图，回答问题：

材料一：黄河以河口和旧孟津为界分成上、中、下游。

如图，△ABC的顶点都是正方形网格中的格点，则cos∠ABC等于（ ）

    After finishing all the food in the little bowl，Goldilocks wanted to rest．She chose the small chair,but it was in pieces．Then she walked into the bedroom and very soon fell____in the small bed．The Bears returned to____house．Baby Bear pointed at Goldilocks and____，"That's the bad girl．She ate my food and broke my chair!"Hearing this．Goldilocks jumped up and hurried out of the house without____her basket．She decided not____for a walk in the forest again．