读图，回答有关问题

图一	图二

（1）图一和图二分别是哪两种交通工具？这两种交通工具分别以什么为动力？                                                                                                                                                                （2）结合生活实际，说说这些发明创造对社会发展的促进作用。                                                                                                                                                                                                                                                                                                                                （3）现在交通工具越来越多，带来了许多负面影响，请你说说，并谈谈你得到的启示。