题目

补全对话，每空一词。A: May I you, madam?B: Yes, please. Do you a yellow dress like this?A: How about this one?B: Well, I like it. Can I try it ?A: Sure. The changing room (试衣间) is over there. You very nice.B: How is it?A: The dresses are on sale for 30% off. This one is only 70 yuan.B: It's fine. I'll it. 答案：【1】help【2】have【3】on【4】look【5】much【6】take用适当方法解下列方程：（1）（x-2）2+（x+2）2=4x-6（2）4（x+2）（x-3）=（x-3）2