(2011广东株洲,17,4分)计算:.
(2011湖南益阳,14,6分)计算:.
(2011湖南邵阳,17,8分)计算:。
(2011浙江台州,17,8分)计算:
(2011福建泉州,18,9分)计算:.
(2011浙江丽水,17,6分)计算:|-1|--(5-π)0+4cos45°.