在正方体
中,
,
,
分别为
,
,
的中点,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
A.![]() |
B.![]() ![]() |
C.设![]() ![]() ![]() ![]() ![]() ![]() |
D.设点![]() ![]() ![]() ![]() ![]() ![]() ![]() |
2021·全国·模拟预测 查看更多[1]
(已下线)2022年全国著名重点中学领航高考冲刺试卷(四)
更新时间:2021-12-04 19:37:20
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【推荐1】已知a,b为正数,且
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92962afac1758a89ece5b796b69bb177.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】已知
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92ed49d83fd68e4b5a6a4215a8a8a3f1.png)
A.![]() ![]() | B.![]() ![]() |
C.![]() ![]() | D.![]() ![]() |
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【推荐1】如图,若正方体的棱长为1,点M是正方体
的侧面
上的一个动点(含边界),P是棱上
靠近G点的三等分点,则下列结论正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9a0c3a4e61b97fa9bc58f3179fc2958.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39a39cf1a9eedda28c63f13ea478ec6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abf80148409afb32ced0b4f59f1ba709.png)
A.沿正方体的表面从点A到点P的最短路程为![]() |
B.保持![]() ![]() |
C.若保持![]() ![]() ![]() |
D.当M在D点时,三棱锥![]() |
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【推荐2】如图所示,四棱锥
中,
为
的中点,
、
分别为线段
、
上的一动点;
为等边三角形,底面
为平行四边形,平面
平面
,
,
,下列说法正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/8/6a09550c-d51f-4bed-a6bd-79a580fed658.png?resizew=166)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4aa9084b8fe0fe05c4388d1f835587b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f99f724bb3614b40d63b284abaa7993f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d2871c2cd274769835f769bb3a6219c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/8/6a09550c-d51f-4bed-a6bd-79a580fed658.png?resizew=166)
A.存在点![]() ![]() ![]() |
B.若![]() ![]() ![]() ![]() |
C.![]() ![]() |
D.若三棱锥![]() ![]() ![]() ![]() ![]() |
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【推荐1】在棱长为2的正方体
中,
,
分别为
,
的中点,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
A.异面直线![]() ![]() ![]() |
B.点![]() ![]() ![]() ![]() ![]() ![]() ![]() |
C.过点![]() ![]() ![]() ![]() ![]() |
D.当三棱锥![]() ![]() ![]() ![]() |
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【推荐2】已知四棱锥
的底面
是边长为3的正方形,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
平面
,
,
为
的中点,过
作平面
分别与线段
、
交于点
、
,且
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1633988fd62a652de726ee92a917b52d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
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A.![]() | B.![]() |
C.![]() | D.四边形![]() ![]() |
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【推荐1】正方体
棱长为4,动点
、
分别满足
,其中
,
且
,
;
在
上,点
在平面
内,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59b2400d72b1e3145cb21ba719d8a968.png)
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A.对于任意的![]() ![]() ![]() ![]() ![]() |
B.当![]() ![]() |
C.若直线![]() ![]() ![]() ![]() ![]() ![]() |
D.![]() ![]() |
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【推荐2】如图,在正方体
中,点E在棱
上,且
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上一动点,则下列结论正确的有( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/13/dae90c42-4eaa-4a3a-abe7-4971bb29eae4.png?resizew=166)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
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A.![]() |
B.存在一点F使得![]() |
C.三棱锥![]() |
D.直线![]() ![]() ![]() |
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