题目

Elizabeth lived with her six children in a small house. One winter, there was a big flood(洪水) ,and quite a few houses were washed away, but Elizabeth's house was high enough to escape it.Elizabeth helped one of the families which had lost everything. She shared her home until the family could build a new house. Elizabeth's friends could not understand hersince she already had so many children to take care.Well, Elizabeth explained to her friends, at the end of World War II, there was a poor woman in a town in England .Her husband had been killed in the war and she had a lot of children, ju(1)如下图1所示,枯井中的青蛙位于井底“O”坐井观天,请在图1的②中画出青蛙在“O”通过井口看到最大范围的两条光线的方向。(1分)(2)如下图2所示,作出物体AB在平面镜中所成的像A’B’。(2分)(3)如下图3所示,根据反射光线作出入射光线,并用字母β标出反射角。(2分)
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