3校园里的动物
蜗牛是怎样出壳的？
蜗牛是怎样爬行的？蜗牛的肚子下的扁平的足实际上是一条条横纹，这些横纹像水波纹一样向后波动着，蜗牛就靠着横纹的波动，慢慢爬行。蜗牛的足里面有个叫“足腺”的小东西，能分泌一种粘液帮助它爬行。
蜗牛吃什么？蜗牛通常栖息在温暖而阴湿的环境中：主食各种蔬菜、杂草和瓜果皮；农作物的叶、茎、芽、花、多汁的果实等。在寒冷的冬季和炎热干燥的夏季：蜗牛能够分泌黏液，将壳口封闭，不吃不动，在枯叶或瓦砾堆中冬眠或夏眠。
蜗牛有触觉和嗅觉吗？用你的棉签后端分别轻触蜗牛的触角、足、壳和躯干等部位蜗牛会有反应吗？哪个部位最敏感？用棉花蘸一点醋或酒精，靠近蜗牛的头部，蜗牛有反应吗？
蜗牛有视觉和听觉吗？让蜗牛在黑暗处下爬行3分钟后，用手电筒从正面照射蜗牛的头部，仔细观察蜗牛怎样行动？离正在爬行的蜗牛前方0.5米处，用力鼓掌，观察蜗牛有没有反应？
结论：蜗牛有视觉、触觉、嗅觉，没有听觉。
蚂蚁的身体结构触角（一对）头胸足（三对）腹
蚂蚁家族蚂蚁喜欢成群结队地住在一起，寻找食物时会单走开。在一窝蚂蚁中，蚂蚁分别有工蚁、雄蚁和雌蚁三种；工蚁雄蚁雌蚁
有趣的蚂蚁蚂蚁喜欢吃的食物是甜味食物，如白糖和面包屑等。蚂蚁寻食的情况非常有趣：如果嗅到甜味，先是用腿试探一下食物，它就会吃起来，并会试图把食物拖走。而且蚂蚁是用触须交谈的。http://shop.99114.com/43697396http://shop.99114.com/51425273http://shop.99114.com/51420693http://shop.99114.com/51421772http://shop.99114.com/51413947http://shop.99114.com/51411731http://shop.99114.com/51428700http://shop.99114.com/51126970http://shop.99114.com/51411785http://shop.99114.com/50571701http://shop.99114.com/51396679http://shop.99114.com/49079032http://shop.99114.com/51428051http://shop.99114.com/51424545http://shop.99114.com/51424410http://shop.99114.com/50662675http://shop.99114.com/50607906http://shop.99114.com/50642953http://shop.99114.com/51423520http://shop.99114.com/51412862http://shop.99114.com/51396195http://shop.99114.com/50565948http://shop.99114.com/51418078http://shop.99114.com/50659681http://shop.99114.com/50667689http://shop.99114.com/49696333http://shop.99114.com/50668750http://shop.99114.com/51415013http://shop.99114.com/50657072http://shop.99114.com/51426863http://shop.99114.com/50901448http://shop.99114.com/51416045http://shop.99114.com/51417275http://shop.99114.com/51431960http://shop.99114.com/50672571http://shop.99114.com/50730736http://shop.99114.com/43628012http://shop.99114.com/51418359http://shop.99114.com/51425046http://shop.99114.com/50532544http://shop.99114.com/50523413http://shop.99114.com/51429014http://shop.99114.com/51413479http://shop.99114.com/51427915http://shop.99114.com/51427705http://shop.99114.com/51408812http://shop.99114.com/51420078http://shop.99114.com/51425252http://shop.99114.com/51428015http://shop.99114.com/50509333http://shop.99114.com/50627589http://shop.99114.com/51432440http://shop.99114.com/51409460http://shop.99114.com/51426945http://shop.99114.com/48224893http://shop.99114.com/48378030http://shop.99114.com/50509974http://shop.99114.com/50853036http://shop.99114.com/51239866http://shop.99114.com/51413418http://shop.99114.com/50854169http://shop.99114.com/50572207http://shop.99114.com/50523591http://shop.99114.com/50299153http://shop.99114.com/50655761http://shop.99114.com/50659840http://shop.99114.com/50656985http://shop.99114.com/48897289http://shop.99114.com/50658418http://shop.99114.com/49075490http://shop.99114.com/50643149http://shop.99114.com/48539360http://shop.99114.com/50523060http://shop.99114.com/50672561http://shop.99114.com/50653733http://shop.99114.com/50630208http://shop.99114.com/49089296http://shop.99114.com/50641100http://shop.99114.com/50573772http://shop.99114.com/50475719http://shop.99114.com/50651985http://shop.99114.com/47371513http://shop.99114.com/50479401http://shop.99114.com/50508974http://shop.99114.com/47774880http://shop.99114.com/50284444http://shop.99114.com/48937324http://shop.99114.com/49089530http://shop.99114.com/50508505http://shop.99114.com/47900320http://shop.99114.com/49763995http://shop.99114.com/50644315http://shop.99114.com/50636516http://shop.99114.com/48102939http://shop.99114.com/50613004http://shop.99114.com/48103150http://shop.99114.com/42333072http://shop.99114.com/47808814http://shop.99114.com/48124341http://shop.99114.com/47913051
蚂蚁在交谈蚂蚁搬食物
蚂蚁间的斗争把不同窝的蚂蚁放在一起，它们的触角一碰，就立刻咬杀起来；把同窝蚂蚁放在一起，它们相遇以后，不但不打不咬，还能互相喂食。
你喜欢哪种鱼类，它们有什么共同特征？
鱼的特征：身上布满鳞片，用鳃呼吸，用鳍运动。躯干尾部胸鳍腹鳍臀鳍尾鳍背鳍头部
小动物的共同特征：它们都需要呼吸、喝水、吃东西；都会长大、繁殖；对刺激有反应；都会运动……
认识这些动物；请给下面的动物分类：家鸽螳螂海鸥斑马
大象乌龟娃娃鱼蛇
大熊猫蜻蜓蛙
一些简单的分类方法：分类一：会飞的：家鸽、螳螂、海鸥、蜻蜓；不会飞的：斑马、大象、乌龟、娃娃鱼、蛇、大熊猫、蛙。分类二：没有脚的：蛇；有脚的：家鸽、螳螂、海鸥、蜻蜓、蛙、斑马、大象、乌龟、娃娃鱼、大熊猫。
比较科学的分类方法：哺乳类：斑马、大象、大熊猫；爬行类：乌龟、蛇；两栖类：娃娃鱼、蛙；鸟类：家鸽、海鸥；昆虫类：螳螂、蜻蜓。
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