题目

Maybe you will say a journalist's duty is to report news with social significance. There is hardly any reason for journalists to express their personal opinion on issues or facts. Forming a judgment or an opinion or idea based on a journalistic report is the readers' privilege. Journalists also need to dig deep so as to look into the roots, inviting the readers to have a look at it. At this time, a report will become meaningful.Journalists must not give much importance to news that doesn't have much significance in the lives of the readers and the audience. This sort of practice primarily come已知F1、F2分别为椭圆C：的左、右焦点，点P为椭圆C上的动点，则△PF1F2的重心G的轨迹方程为（ ）A．B．C．D．