“尽道隋亡为此河，至今千里赖通波”。若无水殿龙舟事，共禹论功不较多。”诗中的“河”是指（  ）

①鹦鹉学舌    ②蜘蛛结网     ③孔雀开屏    ④老马识途

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。

计算：（﹣$\frac{1}{3}$x²y）³，结果正确的是（　　）​