连线题
蛔虫                              线形动物
海蜇                              腔肠动物
涡虫                              扁形动物
龙虾                              节肢动物
蚯蚓                              环节动物
乌贼                              软体动物
家鸽                              鸟类   
大鲵                              爬行类 
龟                                两栖类 
家兔                              哺乳类