题目

根据对话内容, 从下面方框中选出能填入空白处的最佳选项, 完成文中各小题（其中有两项是多余的）。井用2B铅笔把答题卡上对应题目的答案标号涂黑。(At the doctor's. D=Doctor B=Bill)D: Hey, man. What's the matter with you?B: Hello, Dr. Wang. 【1】D: Do you have a sore throat?B: Yes, I do. D: 【2】B: Yes. It is 38℃. D: How long have you been like this?B: 【3】D: Well, you've got a bad cold. B: What should I do?D:【4】Drink some hot water and lie down for a rest. B: OK.【5】D: Two pills each time, three times a day with warm water.11．如图，抛物线y=-x2+bx+c经过A（-1，0），B（3，0）两点，且与y轴交于点C，点D是抛物线的顶点，抛物线的对称轴DE交x轴于点E，连接BD．（1）求经过A，B，C三点的抛物线的函数表达式；（2）点P是线段BD上一点，当PE=PC时，求点P的坐标；（3）在（2）的条件下，过点P作PF⊥x轴于点F，G为抛物线上一动点，M为x轴上一动点，N为直线PF上一动点，当以F、M、N、G为顶点的四边形是正方形时，请求出点M的坐标．