中学生网络课堂
初三数学 (北师版下册)
二次函数综合
本课配套习题挑战模式1/5
单选题
难度系数：
1.已知抛物线
与
轴交于A、B两点，与y轴的正半轴交于点C，坐标平面内有一点
,使得以点M和抛物线上的三点A、B、C为顶点的四边形是平行四边形，请求出点的坐标（ ）
与轴交于A、B两点，与y轴的正半轴交于点C，坐标平面内有一点,使得以点M和抛物线上的三点A、B、C为顶点的四边形是平行四边形，请求出点的坐标（ ） A: （4， ）或（4， ）或（2，） |
| B: （4，）或（-4，） |
| C: （4，-）或（-4，）或（-2，） |
| D: （4，）或（-4，） |
一次做对，真牛！
+5奖励规则>
- 提示1：IOWPr+WIhuWIq+axguWHukHjgIFC44CBQ+eahOeCueWdkOaghw==
- 提示2：IOWIpOaWreWHuuW6lOacieS4ieeCueespuWQiOadoeS7tumimOaEj++8jOWIhuWIq+axguWHug==
- 答案：QQ==
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
本课配套习题挑战模式2/5
单选题
难度系数：
2.抛物线y=-x2+2x+3与x轴交于A，B两点，与y轴交于点C，若P为抛物线在第一象限上的一个动点，过点P作PQ∥AC交x轴于点Q. 当点P的坐标为（）时，四边形PQAC是平行四边形。
| A: （1，4） |
| B: （2，3） |
C: （ ， ） |
D: （
 ， ） |
一次做对，真牛！
+5奖励规则>
- 提示1：IOaehOmAoOWFqOetieS4ieinkuW9ouaxguWHulDngrnnmoTnurXlnZDmoIfvvIzlho3liKnnlKhQ54K55LiOQ+eCueWFs+S6juWvueensOi9tHg9MeWvueensOeahOeJueeCue+8jOaxguWHulDngrnnmoTmqKrlnZDmoIfvvJs=
- 答案：Qg==
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
本课配套习题挑战模式3/5
单选题
难度系数：
3.已知，如图抛物线
与y轴交于C点，与x轴交于A、B两点，若点E在x轴上，点P在抛物线上。则使得以A、C、E、P为顶点且以AC为一边的平行四边形存在的点P的坐标为（ ）
与y轴交于C点，与x轴交于A、B两点，若点E在x轴上，点P在抛物线上。则使得以A、C、E、P为顶点且以AC为一边的平行四边形存在的点P的坐标为（ ） A: （-1， ）（ ，3）（ ，-3） |
| B: （-2，）（，3）（，-3） |
| C: （-3，-3）（，3）（，3） |
D: （
 ，）（，-3）（，-3） |
一次做对，真牛！
+5奖励规则>
- 提示1：DQrmnKzpopjlupTliIbmg4XlhrXorqjorrrvvJo=
- 提示2：4pGg6L+HQ+S9nHjovbTnmoTlubPooYznur/vvIzkuI7mipvniannur/nmoTkuqTngrnnrKblkIhQ54K555qE6KaB5rGC77yM5q2k5pe2UOOAgUPnmoTnurXlnZDmoIfnm7jlkIzvvIzku6PlhaXmipvniannur/nmoTop6PmnpDlvI/kuK3ljbPlj6/msYLlh7pQ54K55Z2Q5qCH77yb
- 提示3：4pGh5bCGQUPlubPnp7vvvIzku6RD54K56JC95ZyoeOi9tO+8iOWNs0XngrnvvInjgIFB54K56JC95Zyo5oqb54mp57q/77yI5Y2zUOeCue+8ieS4iu+8m+WPr+agueaNruW5s+ihjOWbm+i+ueW9oueahOaAp+i0qO+8jOW+l+WHulDngrnnurXlnZDmoIfvvIhQ44CBQ+e6teWdkOagh+eahOe7neWvueWAvOebuOetie+8ie+8jOS7o+WFpeaKm+eJqee6v+eahOino+aekOW8j+S4reWNs+WPr+axguW+l1DngrnlnZDmoIcu
- 答案：Qw==
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
本课配套习题挑战模式4/5
单选题
难度系数：
4.已知：抛物线y=x2-2x-3与x轴交于A，B两点，点B在x轴的正半轴上，若点E是抛物线上的一个动点且在x轴下方和抛物线对称轴的左侧，过E作EF∥x轴交抛物线于另一点F，作ED⊥x轴于点D，FG⊥x轴于点G，设抛物线顶点为P，当四边形DEFG周长m取得最大值时，以EF为边的平行四边形面积是△AEP面积的2倍，另两顶点总有一顶点Q在抛物线上，求Q点的坐标（ ）. 
A: Q1（1+ ，-2），Q2（1-，-2），Q3（1，-4） |
| B: Q1（1+，2），Q2（1+，-2），Q3（2，-3） |
| C: Q1（1-，2），Q2（1-，-2），Q3（1，-4） |
| D: Q1（1+，-2），Q2（1+，-2），Q3（2，-3） |
一次做对，真牛！
+5奖励规则>
- 提示1：IOW9k23mnIDlpKfml7bvvIxF44CBQ+mHjeWQiO+8jOiuvuebtOe6v0FQ5LiOeei9tOeahOS6pOeCueS4uk3vvIzmoLnmja7nm7Tnur9BUOeahOino+aekOW8j++8jOWPr+axguW+l03nmoTlnZDmoIfvvIzov5vogIzlj6/lvpfliLDilrNBRVDlkozlubPooYzlm5vovrnlvaLnmoTpnaLnp6/vvIzmmJPmsYLlvpdFRueahOmVv++8jOWNs+WPr+W+l+WIsFHliLDnm7Tnur9FRueahOi3neemu++8jOS7juiAjOehruWumlHngrnnmoTnurXlnZDmoIfvvIzlsIblhbbku6PlhaXmipvniannur/nmoTop6PmnpDlvI/kuK3vvIzljbPlj6/msYLlvpfnrKblkIjmnaHku7bnmoRR54K55Z2Q5qCHLg==
- 答案：QQ==
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
本课配套习题挑战模式5/5
单选题
难度系数：
5.如图，矩形OABC在平面直角坐标系xOy中，点A在x轴的正半轴上，点C在y轴的正半轴上，OA=4，OC=3，若抛物线的顶点在BC边上，且抛物线经过O，A两点，直线AC交抛物线于点D. 若点M在抛物线上，点N在x轴上，则以A，D，M，N为顶点的四边形是平行四边形则此时点N的坐标为（ ）. 
A: （2，0）（6，0）（ ，0）（ ，0） |
B: （3，0）（4，0）（ ，0）（，0） |
C: （5，0）（6，0）（，0）（ ，0） |
| D: （4，0）（8，0）（，0）（，0） |
一次做对，真牛！
+5奖励规则>
- 提示1：IOWIhuS4pOenjeaDheWGteiAg+iZke+8muW9k+Wbm+i+ueW9okFETU7kuLrlubPooYzlm5vovrnlvaLml7Y=
- 提示2：IOW9k+Wbm+i+ueW9okFETeKAsk7igLLkuLrlubPooYzlm5vovrnlvaI=
- 答案：QQ==
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
