Mike _______ English, but now he is better at it than _______ in his class.   

杜甫的“三吏”指的是（    ）。

结合材料，运用整体和部分相互联系的知识，说明长三角区域和各都市圈的关系。

                                                                                                                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。