读图回答问题：

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1997年，中华人民共和国军委主席江泽民为某纪念馆题词“军旗升起的地方”(见上图题字)

把下面的长方形分成形状和大小都相同的两部分，有几种分法?画一画．

下面的数中，与﹣2的和为0的是（   ）

阅读理解A

    Hello,everybody!Look at this picture．This is a nice Sunday afternoon．My family are having a great time．
    I am Bob．I am having bread and listening to my father telling me a story from the newspaper．He thinks it's interesting．Look at my mom．She is listening to the radio．She likes music on it．My two sisters Rose and Sally are plying．Rose is only one year old and Sally is three.My grandpa is having a nap(打盹)．He always has a nap when he has nothing to do．My grandma is drinking a cup of tea．She likes her tea with a lot of milk in it．My cousins are busy．Ken is watering the flowers(浇花)and Mike is cleaning the windows(窗户)．Where is my pet cat Pussy? Oh, it is running after the birds．
    I really like an afternoon like this．
根据材料内容选择最佳答案。

光电效应是光具有粒子性的有力证据．如图所示，是测定最大初动能和阴极材料的逸出功的实验装置．当开关S断开时，用光子能量为3.11eV的一束光照射阴极K，发现电流表读数不为零．合上电键，调节滑动变阻器，发现当电压表读数小于1.21V时，电流表读数仍不为零；当电压表读数大于或等于1.21时，电流表读数为零．从上述实验数据可知，此时光电子的最大初动能为____ eV，该阴极材料的逸出功为____ eV．