中学生网络课堂本课配套习题挑战模式1/5
单选题
难度系数：
1.椭圆的中心在原点，焦点在x轴上，长轴长为
，焦距为4，则该椭圆的方程为
，焦距为4，则该椭圆的方程为 A:  |
B:  + =1 |
C:  + =1 |
| D: +=1 |
一次做对，真牛！
+5奖励规则>
- 提示1：6K6+5qSt5ZyG55qE5pa556iL5Li6PGltZyB3aWR0aD05MSBoZWlnaHQ9MzAgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC80Ny81QS9yQkFDSjFUWlY2ZXdPbXdHQUFBQkNxQkR5MVE0NzUucG5nIiAgPuS4lGM9Mu+8jA==
- 提示2：5Yip55So5bmz5pa55YWz57O7566X5Ye6Yj0y77yM5LuO6ICM5Y+v5b6X6K+l5qSt5ZyG55qE5pa556iL77yO
- 答案：Qw==
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
本课配套习题挑战模式2/5
单选题
难度系数：
2.离心率
，长轴长为6的椭圆的标准方程是
，长轴长为6的椭圆的标准方程是 A:  |
B: 或 |
C:  |
D: 或 |
一次做对，真牛！
+5奖励规则>
- 提示1：5qSt5ZyG55qE6ZW/6L205Li6Nu+8jOagueaNruemu+W/g+eOh+axguWHumM=
- 提示2：5qC55o2u5Yu+6IKh5a6a55CG5rGC5Ye6Yg==
- 答案：Qg==
6Kej77ya55SxMmE9Nu+8jGE9M++8jDxicj7nlLFlPTxpbWcgd2lkdGg9NTYgaGVpZ2h0PTMwIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvN0IvQ0EvckJBQ0UxVFpWNi14V1BwTkFBQUFyUklFS0NzOTM4LnBuZyIgPu+8jOefpWM9Mjxicj7lj4hiPHN1cD4yPC9zdXA+PWE8c3VwPjI8L3N1cD4tYzxzdXA+Mjwvc3VwPj05LTQ9NTxicj7mlYU8aW1nIHdpZHRoPTg5IGhlaWdodD0zMCBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwLzQ3LzVBL3JCQUNKMVRaVjY2VEpPRUNBQUFBLTRPaWxTRTM5MS5wbmciICA+5Li65omA5rGC77yMPGJyPuaVhemAiULvvI48YnI+
本课配套习题挑战模式3/5
单选题
难度系数：
3.已知两点F1(-1，0)、F2(1，0)，且|F1F2|是|PF1|与|PF2|的等差中项，则动点P的轨迹方程是
A:  |
B:  |
C:  |
D:  |
一次做对，真牛！
+5奖励规则>
- 提示1：562J5beu5Lit6aG555qE5Luj5pWw5YWz57O75byP
- 提示2：5qSt5ZyG55qE5a6a5LmJ
- 提示3：77yM
- 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.椭圆
(a＞b＞0)的两个焦点为F1、F2，短轴两端点B1、B2，已知F1、F2、B1、B2四点共圆，且点(0，3)到椭圆上的点的最远距离为
，则此椭圆的方程是
(a＞b＞0)的两个焦点为F1、F2，短轴两端点B1、B2，已知F1、F2、B1、B2四点共圆，且点(0，3)到椭圆上的点的最远距离为，则此椭圆的方程是 | A: |
B:  |
C:  |
D:  |
一次做对，真牛！
+5奖励规则>
- 提示1：55SxRjxzdWI+MTwvc3ViPuOAgUY8c3ViPjI8L3N1Yj7jgIFCPHN1Yj4xPC9zdWI+44CBQjxzdWI+Mjwvc3ViPuWbm+eCueWFseWchu+8jOW+l+WHumI9Y++8jOi/m+iAjOW+l+WIsGE8c3VwPjI8L3N1cD49YjxzdXA+Mjwvc3VwPitjPHN1cD4yPC9zdXA+PTJiPHN1cD4yPC9zdXA+77yM
- 提示2：5YaN6K6+5qSt5ZyG55qE5pa556iL77yI5ZCr5Y+C5pWwYu+8ie+8jOiuvkjvvIh477yMee+8ieS4uuakreWchuS4iuS4gOeCue+8jOWMlueugOeCue+8iDDvvIwz77yJ5Yiw5qSt5ZyG5LiK55qE54K555qE6Led56a777yM5Yip55So5YW25pyA5aSn5YC877yM5YiG57G76K6o6K665rGC5Ye65Y+C5pWwYueahOWAvO+8jOWNs+W+l+akreWchueahOaWueeoi++8jg==
- 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：
5.一个椭圆中心在原点，焦点F1，F2在x轴上，P(2，
)是椭圆上一点，且|PF1|、|F1F2|、|PF2|成等差数列，则椭圆方程为
)是椭圆上一点，且|PF1|、|F1F2|、|PF2|成等差数列，则椭圆方程为 A: + =1 |
B:  +=1 |
| C: +=1 |
| D: +=1 |
一次做对，真牛！
+5奖励规则>
- 提示1：55Sx5LqOfFBGPHN1Yj4xPC9zdWI+fO+8jHxGPHN1Yj4xPC9zdWI+RjxzdWI+Mjwvc3ViPnzvvIx8UEY8c3ViPjI8L3N1Yj585oiQ562J5beu5pWw5YiX77yM5Y+KUOaYr+akreWchuS4iueahOS4gOeCue+8jOWPr+W+lzJ8RjxzdWI+MTwvc3ViPkY8c3ViPjI8L3N1Yj58PXxQRjxzdWI+Mjwvc3ViPnwrfFBGPHN1Yj4xPC9zdWI+fD0yYe+8jOWNs+WPr+W+l+WIsGE9MmPvvIw=
- 提示2：5Y+IUO+8iDLvvIw8aW1nIHdpZHRoPTIzIGhlaWdodD0xNiBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwLzQ3LzVBL3JCQUNKMVRaVjdXU1M4YVhBQUFCQmlBZ1hVODU2MC5wbmciID7vvInmmK/mpK3lnIbkuIrkuIDngrnvvIzliKnnlKjlvoXlrprns7vmlbDms5XljbPlj6/vvI4=
- 答案：QQ==
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
