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1 . 下列有关命题的说法正确的是( )
A.命题“若![]() ![]() ![]() ![]() |
B.“![]() ![]() |
C.若![]() ![]() |
D.命题“若![]() ![]() |
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2 . 下列说法中,正确的是( )
A.命题“若![]() ![]() ![]() |
B.命题“若![]() ![]() ![]() ![]() |
C.命题“若![]() ![]() ![]() ![]() ![]() |
D.若命题p:![]() ![]() ![]() |
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3 . 命题“若
,则
或
”的否命题是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25339da44bf61bf1c130f5f23e565018.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bc1807f5f5784e75c4e5e6df17f3ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88c2c4b82d87e769807270fc5361fde3.png)
A.若![]() ![]() ![]() | B.若![]() ![]() ![]() |
C.若![]() ![]() ![]() | D.若![]() ![]() ![]() |
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2024-01-05更新
|
228次组卷
|
2卷引用:宁夏石嘴山市第三中学2016-2017学年高二上学期第二次月考数学(理)试题
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4 . 设
,
,若
是
的必要不充分条件,则实数
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a13d9a2ea1779b61df0bb20db8a0bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f859e866576f64c558bac1dbb92731f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ffc1bb9d53a27d484396ad74d6a26e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e26b38e357c7d985656ba7bb3c794a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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5 . 给出下列四个结论:
①命题“
”的否定是“
”;
②“若
,则
”的否命题是“若
,则
”;
③若
则
恒成立
④若
,则
是
的充分不必要条件.
其中正确结论的个数为( )
①命题“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8a044b53c69493ef3e576b3f2020eb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eff6f545ca2940c9c47c7310b3515d59.png)
②“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3e186ebc624ebacde9a03b96289f1ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c142fcbe914e5a8382e866678f325ee3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8e27d0815b42bbb53f3d9d1120bf588.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0786f79b5cf28c9fc2a517ce6fd80b6e.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b366bd12b731cfa3dda3a8b86d10f194.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20357ca15141f2c003aca449f321c182.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69af352c597c568e02eb9e8a0b939a4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
其中正确结论的个数为( )
A.1 | B.2 | C.3 | D.4 |
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6 . 命题“若
,则
”的否命题是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee9f3afddf9878c2a1c7a9cbf35a0a7f.png)
A.“若![]() ![]() | B.“若![]() ![]() |
C.“若![]() ![]() | D.“若![]() ![]() |
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7 . 下列5个命题:①“
,
”的否定;②
是
的必要条件;③“若
,
都是偶数,则
是偶数”的逆命题;④“若
,则
”的否命题;⑤
是无理数
,
是无理数.其中假命题的个数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2939abf9f1755ea304eeb1e73063cba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/838caf5f47c6c4a12de52ee4420264d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/301c3d4cbe02776b719e0f0406db38c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffa3205b1df826d63914dcb55bb3ab43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d6fc9b90f370fbb27552876b650f8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1fdf7d28b97fb6fe731703f80e122ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f194d0be8e14c0dfa0f0e33dc159673c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4ca8bdc812627d925f00ed7c145d696.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d800f03de80068a1172beac3a2c75587.png)
A.1 | B.2 | C.3 | D.以上答案都不对 |
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8 . “若
,则
或
”的否命题是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bad6987e8abfbf07d6a2650483d2a55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef00713e73b8357cc7900144f5505bc6.png)
A.若![]() ![]() ![]() | B.若![]() ![]() ![]() |
C.若![]() ![]() ![]() | D.若![]() ![]() ![]() |
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9 . 陈述句“
或
”的否定形式是( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fde64f4d3c38e43fbdee24eadc4b0dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eec336faee8689281a6f6b465e7fcff9.png)
A.![]() ![]() | B.![]() ![]() |
C.![]() ![]() | D.![]() ![]() |
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10 . 有下列四个命题:
①“若
,则
互为倒数”的逆命题;
②“面积相等的三角形全等”的否命题;
③“若
,则
有实数解”的逆否命题;
④“若
,则
”的逆否命题.
其中真命题为( )
①“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/377a2333ff8c63cbdb20b882d6d5a7ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7822f361618da0965955d7bc25c4b49c.png)
②“面积相等的三角形全等”的否命题;
③“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/347c62b44fae618a37c145b3b5d1f1db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d5707186257494f1fea86066f2778b5.png)
④“若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b05d2be27e8f53e4de3071846dffb41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2ad78dc8b8aed907b4fe9640c997454.png)
其中真命题为( )
A.①② | B.②③ | C.①②③ | D.①②③④ |
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