The No 4 dock at Jiangsu Rongsheng Heavy Industries Co Ltd's Nantong shipbuilding base on May 26, 2012. With a dimension of 139.5*580m,the dock is equipped with a 1600-T gantry crane, the world's largest. [Photo/chinadaily.com.cn]
Critics can keep you sharp
Still learning lessons after years of teaching
Should I tell my students the truth?