_______ did they watch the 2012 London Oylmpic Games, _______ I watched it.
A:Either; or
B:Neither; nor
C:Both; and
D:Not only; but also
若3-a2=3-a,则a与3的大小关系是( )
***曾称赞傅作义是“民族功臣”,“为和平解决各地战事问题和减轻人民的痛苦树立了榜样。”上述评价和哪次战役有关( )