题目

根据对话内容，在空白处填入恰当的句子，使对话完整、通顺。A: Hello, Annie.B: , Tom.A: How are you?B: . And you?A: I' m fine, too.B: ?A: It's a jacket.B: .A: J-A-C-K-E-T.B: ? Is it blue?A: No, it's green. 答案：【1】Hello/Hi【2】I'm fine, thank you【3】What's this / that in English【4】Spell it【5】What color is it please设G是等腰△ABC底边上的高、AD与腰AC上的中线BE的交点．若AD=18，BE=15，则这个等腰三角形的面积为多少？