(2011江苏盐城,19(1),4分)计算:( )0 - ( )-2 + tan45°;
(2011湖南永州,17,6分)计算:
(2011广东肇庆,16,6分)计算:
(2011湖北黄石,16,7分)计算:(-2011)0+()-1--2cos600
(2011江苏无锡,19,4分) (−1)2 − + (−2)0;
(2011四川凉山州,18,6分)计算: