单选题 较易0.85 引用2 组卷194
给出下列结论:
①命题“
”的否定是“
”;
②命题“
”是“
”的充分不必要条件;
③数列
满足“
”是“数列
为等比数列”的充分必要条件.
其中正确的是
①命题“
![](https://img.xkw.com/dksih/QBM/2016/3/3/1572516162592768/1572516168146944/STEM/9060293e2a8a41b986a9da5bf6797eca.png)
![](https://img.xkw.com/dksih/QBM/2016/3/3/1572516162592768/1572516168146944/STEM/bca47cbd24764afb807d111c3e84a491.png)
②命题“
![](https://img.xkw.com/dksih/QBM/2016/3/3/1572516162592768/1572516168146944/STEM/6d2d6e05b48246fbab39099f873799bc.png)
![](https://img.xkw.com/dksih/QBM/2016/3/3/1572516162592768/1572516168146944/STEM/bcb4a9f66ae84283acb7e8cdbf44b8cd.png)
③数列
![](https://img.xkw.com/dksih/QBM/2016/3/3/1572516162592768/1572516168146944/STEM/25ff81f30b7b4519b549955767bd4442.png)
![](https://img.xkw.com/dksih/QBM/2016/3/3/1572516162592768/1572516168146944/STEM/041147bce83340a79d8735c5c21e97ab.png)
![](https://img.xkw.com/dksih/QBM/2016/3/3/1572516162592768/1572516168146944/STEM/25ff81f30b7b4519b549955767bd4442.png)
其中正确的是
A.①② | B.①③ | C.②③ | D.①②③ |
15-16高三·江西吉安·阶段练习
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