A:y=sinx的图象向右平移 π2 个单位得y=cosx的图象
B:y=cosx的图象向右平移 π2 个单位得y=sinx的图象
C:当φ>0时,y=sinx的图象向右平移φ个单位可得y=sin(x+φ)的图象
D:当φ<0时,y=sinx的图象向左平移φ个单位可得y=sin(x﹣φ)的图象
Another d____ from H7N9 bird flu was reported by the Department of Health of Jiangsu Province on April 15, 2013.