题目

Recently, a case of lifeboat ethics (伦理) occurred. On Aug. 4, Graham and Sheryl Anley, while boating off the coast of South Africa, hit a rock. As the boat threatened to sink, the husband got off, but his wife was trapped in the boat. Instead of freeing his wife and getting her to shore, Graham grabbed Rosie, their pet dog. With Rosie safe and sound, Graham returned for Sheryl. All are doing fine.  It’s a great story, but it doesn’t strike me as especially newsworthy. News is supposed to be about something fairly unique, and recent research suggests that, in the right circum如图，三行三列的方阵中有9个数aij（i=1，2，3；j=1，2，3），从中任取三个数，则至少有两个数位于同行或同列的概率是（ ）A．B．C．D．