mm糖糖豆
保护白鳍豚憨厚、可爱的白鳍豚， 被人们称为“长江女神”、“水中大熊猫”、“活化石” ，也是我国目前最濒危的国家一级保护动物。它全身灰白，体态优美，呈流线型。眼睛很小，嘴似长剑，背鳍为三角形，尾鳍又大又扁。圆圆的鼻孔长在头顶，非常像海豚。在水中，它游动时和鱼类一样，十分的灵活，那急速穿行于波涛之中的身影令人惊叹不已。可是，我们的“长江女神”现在并不快乐，她的眼泪在浑浊的江水中飞洒，她的视觉也变得像江水般浑浊，常常被噪音吵得晕头转向，撞到船舶的螺旋桨上死亡，在一片电光中丧生。他们的家园充满恶臭和肮脏。长江不再是白鳍豚的家园，人类已成为白鳍豚的天敌。由于生态环境受到很大破坏，长江白鳍豚现存量已不到一百头，如不有效保护，白鳍豚将会在二十年后从地球上消失。难道长江白鳍豚将要在二十年之后重演恐龙灭绝留给人类的遗憾吗？面对这种情况，我要大声疾呼：“爱惜我们共有的家园，保护生态环境，保护野生动物，就是保护人类自己啊！”为了“长江女神”不再哭泣，让我们共同保护浩浩长江不受污染，更加爱惜我们的朋友，更加爱惜我们共有的家园吧！Dolphin protection.Honest, lovely dolphin, known as the "goddess of the Yangtze River", "giant panda in the water" and "living fossil", is currently China's most endangered animal protection at the national level. Its whole body is gray, graceful posture, is streamlined. Small eyes, mouth like sword, the dorsal fin is triangular, large and flat fin. Round nose is long on the top of the head, very like a dolphin. In the water, when it is swimming and fish, is very flexible, and the rapid movement of the waves in the form of amazing.However, the "goddess of the Yangtze River" now is not happy, her tears in the muddy river FEISA, her vision has become like the river like a muddy, often noisy confused and disoriented, hit the ship propeller, killed in a lightning. Their homes are full of stench and dirty. The Yangtze River is no longer left home, has become the enemy of human dolphin.Because of the ecological environment has been greatly damaged, the Yangtze River dolphin biomass has been less than one hundred head, if not effectively protected, dolphins will disappear from the earth in twenty years. Does the Yangtze River Dolphin will be in twenty years after a repeat of the extinction of dinosaurs for human beings and regret? Faced with this situation, I want to shout: "cherish our common homeland, protecting the ecological environment, the protection of wild animal, is to protect ourselves!"In order to "goddess of the Yangtze River" is no longer crying, let us work together to protect the vast Yangtze River is not polluted, more cherish our friends, more cherish our common homeland!保护白鳍豚憨厚、可爱的白鳍豚， 被人们称为“长江女神”、“水中大熊猫”、“活化石” ，也是我国目前最濒危的国家一级保护动物。它全身灰白，体态优美，呈流线型。眼睛很小，嘴似长剑，背鳍为三角形，尾鳍又大又扁。圆圆的鼻孔长在头顶，非常像海豚。在水中，它游动时和鱼类一样，十分的灵活，那急速穿行于波涛之中的身影令人惊叹不已。可是，我们的“长江女神”现在并不快乐，她的眼泪在浑浊的江水中飞洒，她的视觉也变得像江水般浑浊，常常被噪音吵得晕头转向，撞到船舶的螺旋桨上死亡，在一片电光中丧生。他们的家园充满恶臭和肮脏。长江不再是白鳍豚的家园，人类已成为白鳍豚的天敌。由于生态环境受到很大破坏，长江白鳍豚现存量已不到一百头，如不有效保护，白鳍豚将会在二十年后从地球上消失。难道长江白鳍豚将要在二十年之后重演恐龙灭绝留给人类的遗憾吗？面对这种情况，我要大声疾呼：“爱惜我们共有的家园，保护生态环境，保护野生动物，就是保护人类自己啊！”为了“长江女神”不再哭泣，让我们共同保护浩浩长江不受污染，更加爱惜我们的朋友，更加爱惜我们共有的家园吧！
陈709479558
海豚是人类的好朋友，被人们称为见义勇为的海上救生员。海豚救人的故事，不是虚构的，而是非常真实的。1966年，韩国一艘渔船在太平洋海面上捕鱼时不幸沉没，16名船员中有6名当即丧生。其余10名船员在水中游了近10个小时，一个个累得筋疲力尽。就在他们求生无望之际，一群海豚匆匆赶来，围在他们周围，好像是来营救他们。这10名船员喜出望外，抓住海豚胸鳍就往海豚背上爬。不料，海豚却把身子往下沉，自动游到他们下面，然后把身子往上一抬，就把他们驮在背上了。就这样，海豚们驮着10名船员，一直游了46海里，然后猛地一使劲，把他们安全地甩到了诲岸上。1972年9月，南非一位23岁的姑娘伊瓦诺所乘的船在离海岸40公里处的海面上，不幸被海浪打翻了，她拼命往岸边游，这时有一头鲨鱼向她游来，她甚至已经清楚地看见鲨鱼狰狞的面目了，不由得下意识地闭上了眼睛，呼吸都快停止了。就在这时，有两头海豚出现在她身边，把鲨鱼赶跑了，护送她到靠近港口的安全地带。1992年，一艘印尼货轮正在大西洋航行，有两名海员不小心掉入海中。这时一群海豚赶来，它们围成一个圆圈，把落水的一人托出水面，直到被救起为止。另一名船员正在水中挣扎，突然感到腰间被撞了一下，原来也是一只海豚。这只海豚一直陪伴着他，与他并肩游泳，直到船员游到船边。海豚为什么会有救人于死难的崇高精神呢？人们一直感到不可思议。近几年在人们对海豚进行认真研究后，这个谜才被解开。说来其实很简单，海豚救人的美德，来源于海豚对其子女的“照料天性”。原来，海豚是用肺呼吸的哺乳动物，它们在游泳时可以潜入水里，但每隔一段时间就得把头露出海面呼吸。否则就会被水淹死。因此，对刚刚出世的小海豚来说，最重要的事，就是尽快地浮上水面进行呼吸。在一般情况下，小海豚自己能够顺利到达水面，但若遇到意外，就需要海豚母亲的照料。她用吻轻轻地把小海豚托起来，或用牙齿叼住小海豚的胸鳍使它露出水面，直到小海豚能够自己呼吸为止。这种照料行为是海豚及所有鲸类的本能。海豚最初的动机可能仅仅是救援自己的幼豚，后来逐渐变成一种习以为常的天性，救助的对象已不限于自己的子女。凡在水中不积极运动的物体都会引起它们的注意，并主动前去救助。科学家做过许多试验，结果证明海豚对于面前飘过的任何物体，不论是救生圈还是大木板，都会主动上前救助。此外，对年幼海豚进行照料并不限于它的亲生母亲，别的雌海豚也乐于这样做，它们往往相互配合，一起救助海豚的晚辈。有时，它们一起把幼海豚夹在中间，置于它们的共同保护之下。这就难怪海豚救人往往是集体行动了。
走遍大中华
Hopefully you already know that dolphins are not fish. Dolphins are warm blooded mammals like us. They breath air through a nostril on the top of their heads called a blowhole. Because dolphins breath air, they must surface periodically. Fish, however, breath by using gills underwater, and therefore do not need to surface. Many fish also have scales, which dolphins do not have. Instead, the skin of a dolphin feels rubbery. A layer of fat, called blubber, under their skin keeps them warm. The locomotion of fish and dolphins is also different. Fish swim by moving their tails from side to side (horizontally). However, dolphins swim by moving their tails up and down (vertically). How many kinds of dolphins are there? This question will probably never be answered correctly. As humans, we want to put everything we know of into a group. Some people like large groups with some variation and others like small, precise groups. Not everyone agrees about what marine dolphins deserve their own species name and what ones do not. I currently have 32 species of marine dolphins listed. I am pretty sure that this covers all the species accurately. Most people agree that there are six species of porpoises and five species of river dolphinsDolphins can understand and interpret some words and actions, they cannot understand us word for word like in the TV show. Even though dolphins may not understand us completely, they might have their own languages. In fact, many people believe that dolphins communicate with languages.
优质英语培训问答知识库
