（5分）将下列生物与其相关内容用线连接起来

①白鳍豚                                                                             A．我国珍贵的涉禽

②扬子鳄                                                                             B．世界濒临灭绝的鸟类

③银　杉                                                                             C．我国特有的珍稀水生哺乳动物

④丹顶鹤                                                                             D．中生代动物的“活化石”

⑤朱　鹮                                            E．植物中的“大熊猫”