名校
1 . 已知抛物线C:
过点
,则抛物线C的准线方程为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec68c680d1b8c8cfa98b48a27d2c46a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4b2071f4db623ff7228b0a7257efc92.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2 . 已知抛物线
的焦点为
点
在
上. 若
到直线
的距离为4,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61cc141e9b6050eae77c22dd46fd4ff5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f5c664aa79a88c035d7ece15220a4c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/639c3d2ff5ee566fcc1b69c65712a661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc1c76111ee604ba947ad94a13695a2e.png)
A.7 | B.6 | C.5 | D.4 |
您最近一年使用:0次
名校
解题方法
3 . 已知抛物线
,若抛物线上一点
到
轴的距离是到焦点
距离的一半,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ac62b1ade07205ae2693ec1ab135def.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cd05d243091ba3ec8da3d33fc5956e2.png)
A.2 | B.3 | C.4 | D.6 |
您最近一年使用:0次
4 . 点F抛物线
的焦点,A,B,C为抛物线上三点,若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b072ff6d1b83232bebd7d4709ffba4ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b538a85b4c31bfad234cb45f32ec2b69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b521f315cc523cd0d026c0a8443b48e.png)
A.2 | B.![]() | C.3 | D.![]() |
您最近一年使用:0次
名校
解题方法
5 . 已知抛物线
的焦点为
,点
在
上,若
到直线
的距离为5,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc7ad3432ac96b0a38beaa7f2edc3499.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b27aee52676f4237adac068fe745fde.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cd05d243091ba3ec8da3d33fc5956e2.png)
A.5 | B.4 | C.3 | D.2 |
您最近一年使用:0次
名校
6 . 设M是抛物线
上的一点,F是抛物线的焦点,O足坐标原点,若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53ab29e1c657a2ed49c01a9dcc2c921b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fae7df59807efb72498b8618912d38b7.png)
A.5 | B.4 | C.3 | D.2 |
您最近一年使用:0次
名校
7 . 已知点
在抛物线
:
(
)上,
为
的焦点,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/706e0350fd1c36a4e3c66868a8218a7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fc58c62444bf42a25289c45425a00f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5abd313d4e92a762fb7fb0c1cb65263d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dd1f7bf8f93c219c8716df185b66e1c.png)
A.3 | B.4 | C.5 | D.6 |
您最近一年使用:0次
名校
解题方法
8 . 已知抛物线
的焦点为
,准线为
是
上一点,
是直线
与
的一个交点,若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64447af8454c613a58b11d9274d3da2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89ea803e31d2dedcf0590e0a0475e7ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb26d84907c923278ac4626a9d58947.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61e9cefeca2d0d7ae109c55c1f012353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/239846fd08bb2b6aa8d0bcf0ffd60138.png)
A.![]() | B.3 | C.![]() | D.2 |
您最近一年使用:0次
9 . 已知抛物线
的焦点为
,点
在
上.若以
为圆心,
为半径的圆被
轴截得的弦长为
,则该圆的面积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37ab7408ffcefcb8e5e1ad4a9c58f1b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/966226b2b30f1a47a3593b6eed1bdcfc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ac654a052f98d1ccb7fede1f122cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b91d650c2fc1a741fabdb333b09aeb6.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次