A:p∨q
B:p∨(¬q)
C:(¬p)∧(¬q)
D:(¬p)∨(¬q)
Present at the historic meeting ________ many an official on Nov 7, of course President Xi Jinping and Ma Ying-jeou ________.
可以证明次氯酸是弱酸的事实是( )
文学常识表述有错的一项是( )