函证银行存款的目的只是要证实在资产负债表日银行存款是否是真实存在的。( )
参考答案：错
关于命题有以下说法：
①陈述句是命题；
②“至少有一个实数x，使x3+1≤0”是真命题；
③命题“x、y、z不能同时大于0”的否定是“x、y、z同时大于0”；
④若p是真命题，q是假命题，则p∧q是真命题；
⑤若“mx-2＞0”充要条件是“x-2＞0”，则m=1．
其中正确说法的序号是______．
The accused woman _______ himself by saying that he killed the man totally out of self-defense and
it was completely an accident. [ ]
A. guarded
B. protected
C. defended
D. prevented
