[填空题] （）导致退化是最重要因素。

除工业、农业、畜牧业等较为明显的入湖污染源外，（）和（）也是引起湖泊退化的主要原因。 必须把改革开放同四项基本原则统一起来，全面落实党的基本路线，全面执行党在社会主义初级阶段的基本纲领，反对一切“左”的和右的错误倾向，要警惕右，但主要是防止（）。 ["“左”","“右”","“左和右”","“不左不右&rdquo"] 河道的近自然恢复方法包括（）和（）。 栖息地片断化 The following access list below was applied outbound on the E0 interface connected to the 192.169.1.8/29 LAN:How will the above access lists affect traffic?（） [" FTP traffic from 192.169.1.22 will be denied."," No traffic, except for FTP traffic will be allowed to exit E0."," FTP traffic from 192.169.1.9 to any host will be denied."," All traffic exiting E0 will be denied."," All FTP traffic to network 192.169.1.9\/29 will be denied."] （）导致退化是最重要因素。