下列叙述中属于一对相对性状的是（　　）

写出反义词

乌黑—____   高兴—____   微笑—____

                                                                                                                溪桥晚兴
                                                                                                                   郑协①
                                                                                         寂寞亭基野渡边，春流平岸草芊芊②。
                                                                                         一川晚照人闲立，满袖杨花听杜鹃。
                                                                                注：①郑协：南宋移民。②芊芊：草木茂盛。