题目

听材料，回答问题。 （1） Why was Sivert awarded the prize? A . He helped a girl fix her radio. B . He didn't use social media for six years. C . He invented a new app. （2） What inspired Lorna to award Sivert the prize? A . A challenge called the 16 for 16. B . His son's addiction to social media. C . A conversation with her son. （3） What will Sivert use the prize to do? A . Donate it to poor students. B . Buy a house. C . Buy something for his future dorm room.如图，已知A、B两点的坐标分别为（-2，0）、（0，1），⊙C的圆心坐标为（0，-1），半径为1．若D是⊙C上的一个动点，射线AD与y轴交于点E，则△ABE面积的最大值是    ．