阅读下面的古诗，回答相关问题。

                                                                                                                                          浣溪沙
                                                                                                                                            晏殊
                                                                                                    一曲新词酒一杯，去年天气旧亭台，夕阳西下几时回。
                                                                                                    无可奈何花落去，似曾相识燕归来，小园香径独徘徊。