动物的先天性行为也称____行为。

以下关于燃烧现象的描述，正确的是：
①硫在氧气中燃烧发出淡蓝色火焰 ②铁丝在空气中燃烧火星四射 ③蜡烛燃烧产生二氧化碳和水 ④红磷在空气中燃烧产生大量白雾 ⑤木炭在氧气中燃烧发出白光

                                                                                                      登岳阳楼
                                                                                          昔闻洞庭水，今上岳阳楼。
                                                                                          吴楚东南坼，乾坤日夜浮。
                                                                                          亲朋无一字，老病有孤舟。
                                                                                          戎马关山北，凭轩涕泗流。