题目

如图，矩形的面积为8，它的两条对角线交于点，以、为两邻边作第一次变换得到菱形，菱形的对角线交于点，同样以、 为两邻边作第二次变换得到矩形，……，依次类推，第次变换后，所得到的图形的面积为            ．   答案： 补全对话(每空一词) 　　A：What l ndline　 you doing here，Jim? 　　B：I'm thinking my life 2 ndline　 the future． 　　A：What 3 ndline　 happen in the future?　Will we have easy lives 4 ndline　 difficult lives? 　　B：I think we'll have easy 5ndline． 　　A：Why 6 ndline　 you say so? 　　B：Because the robots will do most 7 ndline　 our work． 　　A：What are we 8 ndline　 to do then? 　　B：We'll have more free time 9 ndline　 more holidays． 　　A：We are going to l0 ndline　 the plane to America．I want to visit Disneyland． 　　B：Good idea．