题目

AccidentA car crashed into a tree. Some people were trapped in the car.Weather conditionsThere was a heavy rain.Date of callMarch 19,2019Time of call9:30p.m. Name of callerMrs. GreenPlaceTaxue（踏雪）Road, MeixihuConditions of victims(受害人)Mr.Green hurt his head Mrs. Green hurt her left legTheir daughter felt frightenedActionPolicemen arrived at 9:40p.m and sent the victims to Xiangya Hospital at 9:45 p.m. 【1】Who called the police?A.Mr. Green B.Mrs. Green C.Their daughter【2】How many people got hurt in the accident?A.Three B.Two C.One【3】When did the police arrive at the pl如图，已知反比例函数y=（x＞0）的图象与一次函数y=-x+b的图象分别交于A（1，3）、B两点．（1）求m、b的值；（2）若点M是反比例函数图象上的一动点，直线MC⊥x轴于C，交直线AB于点N，MD⊥y轴于D，NE⊥y轴于E，设四边形MDOC、NEOC的面积分别为S1、S2，S=S2-S1，求S的最大值．