名校
解题方法
1 . 命题
,
,命题
,
,下列给出四个命题①
;②
;③
;④
,所有真命题的编号是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bea9702708f8463975c94119fa50f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5feadcbfc13b894e1f1e922e826122bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71cc4a187c9030aefcdc1e777ef2a51d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d19d43844aede4b8cac031df67cf52dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f675824e539f50cec53120959d32e554.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13472bf0353e16784a22e1f890fba40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97842fd0ea2ea493566e5b4e363daa5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b282201fb449f577cf664148afc9b2f.png)
A.①③ | B.①④ | C.②③ | D.②④ |
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