一篇描写动物的英语作文（精彩20篇）

My favourite animal is fish. Because they are very interesting. There are many kinds of fish. They are liveing in water very free. They are very colorful, some fish are red, some fish are white, and some fish are gold... So I like them very much !!!!

我最喜欢的动物是鱼。因为他们是非常有趣的。鱼的种类非常多。他们是在水中自由自在的生活。他们是五颜六色的,一些鱼是红色的,一些鱼是白色的,一些鱼是黄金色的……我非常喜欢它们! ! ! !

What will the future be? There are likely to be numerous potential breakthroughs and achievements in science and technology.

Solutions to current social and economic problems will be found.

In the field of industry, agriculture and service industry, possible products and manufacturing methods might be realized.

Hi-tech industry could develop faster.The living environment will be cleaner and satisfactory.

People will lead a carefree life.Higher education will be available to every knowledge-thirsty person.

It is hard to detail visions on people’s beautiful life.

Future is indeed like a riddle, some areas of which are beyond the reach of our imagination.

Nevertheless, one thing is certain: the advancement of science and technology will characterize the future.

Only through mastering advanced science and technology can a nation be successful in facing more challenges of technological revolution and social progress.

我们家有一只乌龟，我管它叫“可碧”，顾名思义，是可口可乐和雪碧的合称。

可碧一身绿色，还分了几块呢！那龟壳上的绿纹如同几片树叶落在上面交叉形成的。它的额头平平的，额头下面还有一对红得似火的斑纹，像戴了耳机似的。它的嘴巴是三角形的，吃起东西来可快了。你们别看它的爪子小，可锋利着呢，我曾经被抓过一次，那疼痛让我终生难忘，就如同一把把小刀刺在身上一样，我被抓得差点跳起来，我想，一个小小的乌龟竟然这么厉害！

可碧刚来我们家的时候，东跑跑，西跑跑，我也不会太注意，直到有一次，它竟爬到我的课本上了，在我的书上淘气地抓了几个小爪印，幸好抓得不深。

它渐渐跟我熟了，再也不会见人就跑。那一次刚上完象棋课回来，我发现可碧不见了，我担心死了，就在这时，我看见妈妈的盆栽正在往外飞土，我才注意到原来是它搞的鬼，它正在玩捉迷藏呢，可真淘气啊！

我真喜欢这只小乌龟啊！

Many wild animals are facing the danger of extinction，because the environment that they are living in has changed greatly。For example，with the developmet of cities，the using of insecticide and serious pollution，their living areas have bee narrowcr and narrower。Many of the wild animals，now are confronted with food crisis。At the same time，man is killing off species just for getting their fur，skin，horns，teeth and meat.In order to protect our resources of ecology，people should realize that the loss of any species is at least the loss of source of knowledge and a source of natural beauty。There fore，measures of the following should be taken:pollution standards are made to keepdown poisons; killing off certain rare species is prohibited; national parks should be set up as wild life，reserves.Only if we human beings take some drastic measures can wild animals be preserved。

The old town of Lijiang has a history of more than 800 years and was once a confluence for trade along the old tea horse road.It is famous for its orderly system of waterways and bridges.The old town of Lijiang differs from other ancient Chinese cities in architecture, history and the culture tradition of its local residents-the Naxi people.The town is built along mountains and rivers, providing us a very precious sample of the research on the old-time architecture. The uniquegeographical location, historical background and multiracial inhabitants make it one of the most special old towns.

丽江古城有800多年的历史，曾经是茶马古道(the old tea horse road)上的一个贸易集结点(confluence)。丽江因其有序的水道和桥梁系统而闻名。丽江古城在建筑、历史及其原住民纳西族(the Naxi people)的文化传统方面不同于中国其他古城。古城沿山脉和河流而建，为我们提供了一个研究古代建筑的非常珍贵的样本。独特的地理位置、历史背景以及多民族的居民，都使丽江成为最特别的古城之一。

Summer sister quietly gone, the autumn girl came in a hurry, she did not pay attention to you, the autumn door opened.

Pear baby and persimmon baby one by one to fill the big orchard; purple Yingying grape lady special beauty, she is in the purple (white) The face painted with a layer of sparkling powder, from a distance, like a string of purple pearls, looks very attractive; chubby pomegranate looks very cute, he will give the autumn girl what? Did not expect, Mr. pomegranate actually gave the autumn girl a bag of red pearls, flashing, lit the whole large orchard.

Watching the park is really lively! Colorful chrysanthemum contests, white like snow, yellow tournament gold, pink like Xia ... ... colorful, beautiful! Her posture is also very moving: some Minato together, like a few Good sister in the whisper; some lowered his head, like a shy little girl ... ... is really graceful! Golden yellow sweet-scented osmanthus exudes a refreshing fragrance, really "Osmanthus bloom, fragrant floating ten miles" ah!

The woods, a piece of leaves fall, like a butterfly in the forest flying, there are red, yellow, green, and purple ... ... very beautiful ... field, the golden rice laughter Bent over, people feel shines.

This is my eyes beautiful autumn scenery, let us enjoy this charming scenery together!

My family bought a new goldfish. This goldfish can be beautiful! They are bulging on their heads, like wearing a big hat; eyes round bulging, but surprisingly small; lovely mouth a together, spit out a string of pearl-like blisters; body dressed in scales, in the sun Under the whole body glittering, swimming when a shake, like a wearing a gold armor, arrogant generals; lovely tail in the water like a blossoming transparent flowers, but also like a butterfly in the water dancing.

I watched them kept swimming in the water.Happy look, I am curious: these goldfish seems to never sleep like, not tired? How do not rest? In order to solve the doubts, I began a careful observation, and access to the relevant information: the original goldfish will sleep. Because they have no eyelids, so can only sleep with eyes open. If you see the goldfish in the rock crest in motionless, eyes do not turn, only the fish gill cover kept in a together, gently flip, in fact, is the goldfish in bed. But it is a shallow sleep state, so a movement, will wake up.

I finally know that the goldfish will sleep, and how to sleep, but also understand the truth: pay attention to all the knowledge!

虎啸 狼嗥 猿啼 狮吼 马嘶 龙吟 犬吠

灵活 灵巧 笨拙 顽皮 憨厚 精灵 机灵

可爱 漂亮 温顺 凶悍 凶猛 狡诈 狡猾

狰狞 贪婪 肥壮 雄健 威武 矫健 敏捷

健壮 壮实 粗壮 高大 瘦小 驯顺 奔腾

奔跑 飞奔 腾跃 追逐 厮打 长啸 长嘶

嘶鸣 咆哮 珍禽异兽 放虎归山 纵虎归山 藏龙卧虎 虎啸狼嚎

虎啸龙吟 如虎添翼 虎踞龙盘 虎头蛇尾 虎气生生 虎背熊腰 龙腾虎跃

龙争虎斗 虎视眈眈 狼吞虎咽 如狼似虎 狼子野心 万马奔腾 老马识途

害群之马 一马当先 心猿意马 牛肥马壮 驯似羔羊 老牛舔犊 鸡鸣犬吠

活蹦乱跳 摇头摆尾 吼声震天 仰天长啸 毛骨悚然 膘肥体壮 瘦骨嶙峋

庞然大物 高大威武 腾空跃起 矫健轻捷 桀骜不驯 野性难驯 笨头笨脑

张牙舞爪 龇牙咧嘴 狡诈如狐 摇头晃脑 东张西望 贼头贼脑 色彩斑斓

I was only nine years old when I learnt how to use a computer. My mother is  my first teacher. I know how to type, how to copy a file, and how to visit a web  site on the internet. One day, mom was not at home.

I turned on the computer and began to learn how to chat on net. The first  one I met there was a boy called tom. He greeted me politely. When he knew that  I was only a 9-year-old girl, and almost knew nothing about chatting on net, he  started showing me how to use the chatting tools, how to download, and how to  send e-mails. I learnt a lot from him.

[描写我的网友英语作文

动物也是我们这个世界里的一份子，跟我们意义，生活在同一片蓝天之下， 呼吸一样的空气。下面是小编整理收集的描写动物的四字词语，欢迎阅读！

狗头鼠脑

[gǒu tóu shǔ nǎo]

比喻奴才相。

羊毛出在羊身上

[yáng máo chū zài yáng shēn shang]

比喻表面上给了人家好处，但实际上这好处已附加在人家付出的代价里。

闻鸡起舞

[wén jī qǐ wǔ]

听到鸡叫就起来舞剑。后比喻有志报国的人及时奋起。

莺歌燕舞

[yīng gē yàn wǔ]

黄莺在歌唱，小燕子在飞舞。形容春天鸟儿喧闹活跃的景象。现常比喻革命和建设蓬勃兴旺的景象。

千军万马

[qiān jūn wàn mǎ]

形容雄壮的队伍或浩大的声势。

车水马龙

[chē shuǐ mǎ lóng]

车像流水，马像游龙。形容来往车马很多，连续不断的热闹情景。

望子成龙

[wàng zǐ chéng lóng]

希望自己的子女能在学业和事业上有成就。

打草惊蛇

[dǎ cǎo jīng shé]

打草惊了草里的蛇。 原比喻惩罚了甲而使乙有所警觉。后多比喻做法不谨慎，反使对方有所戒备。

鸡零狗碎

[jī líng gǒu suì]

形容事物零碎细小，不成系统。

调虎离山

[diào hǔ lí shān]

比喻为了便于乘机行事，想法子引诱有关的人离开原来的地方

狗逮老鼠

[gǒu dǎi lǎo shǔ]

比喻做外行事或多管闲事。同“狗拿耗子”。

狗续金貂

[gǒu xù jīn diāo]

比喻滥封的官吏。

猪突豨勇

[zhū tū xī yǒng]

豨：野猪。指拼命向前冲，不怕死的人（含贬义）。

狗续侯冠

[gǒu xù hòu guàn]

犹狗续金貂。 比喻滥封的官吏。

鸡鸣狗盗

[jī míng gǒu dào]

鸣：叫；盗：偷东西。 指微不足道的本领。也指偷偷摸摸的行为。

对牛弹琴

[duì niú tán qín]

讥笑听话的人不懂对方说得是什么。用以讥笑说话的人不看对象。

肉袒牵羊

[ròu tǎn qiān yáng]

牵羊：牵着羊，表示犒劳军人。古代战败投降的仪式。

牵羊担酒

[qiān yáng dān jiǔ]

牵着羊，挑着酒。表示向人慰劳或庆贺。

惊猿脱兔

[jīng yuán tuō tù]

如受惊的猿猴、脱逃的兔子。形容迅速奔逃。

鸡飞蛋打

[jī fēi dàn dǎ]

鸡飞走了，蛋打破了。比喻两头落空，一无所得。

狗吠之惊

[gǒu fèi zhī jīng]

吠：狗叫；惊：惊吓。 比喻小的惊吓。

猴年马月

[hóu nián mǎ yuè]

猴、马：十二生肖之一。 泛指未来的岁月。

狗吠非主

[gǒu fèi fēi zhǔ]

比喻臣子各忠于自己的君主。

心猿意马

[xīn yuán yì mǎ]

心意好像猴子跳、马奔跑一样控制不住。 形容心里东想西想，安静不下来。

人怕出名猪怕壮

[rén pà chū míng zhū pà zhuàng]

人怕出了名招致麻烦，就象猪长肥了就要被宰杀一样。

鸡犬升天

[jī quǎn shēng tiān]

传说汉朝淮南王刘安修炼成仙后，把剩下的药撒在院子里，鸡和狗吃了，也都升天了。 后比喻一个人做了官，和他有关的人也跟着得势。

虎口拔牙

[hǔ kǒu bá yá]

从老虎嘴里拔牙。比喻做十分危险的事情。

动如脱兔

[dòng rú tuō tù]

比喻行动敏捷。

惊弓之鸟

[jīng gōng zhī niǎo]

被弓箭吓怕了的鸟不容易安定。比喻经过惊吓的人碰到一点动静就非常害怕。

猪卑狗险

[zhū bēi gǒu xiǎn]

比喻卑鄙阴险的人。

使羊将狼

[shǐ yáng jiàng láng]

将：统率，指挥。派羊去指挥狼。比喻不足以统率指挥。也比喻使仁厚的人去驾驭强横而有野心的人，这要坏事。

犬兔俱毙

[quǎn tù jù bì]

比喻双方同归于尽。

多歧亡羊

[duō qí wáng yáng]

因岔路太多无法追寻而丢失了羊。 比喻事物复杂多变，没有正确的方向就会误入歧途。也比喻学习的方面多了就不容易精深。

问羊知马

[wèn yáng zhī mǎ]

比喻从旁推究，弄清楚事情真相。

十羊九牧

[shí yáng jiǔ mù]

十头羊倒用九个人放牧。比喻官多民少，赋税剥削很重。也比喻使令不一，无所适从。

以羊易牛

[yǐ yáng yì niú]

易：更换。 用羊来替换牛。比喻用这个代替另一个。

狐死兔泣

[hú sǐ tù qì]

比喻因同类的死亡而感到悲伤。

羊入虎群

[yáng rù hǔ qún]

比喻好人落入坏人的手中，处境极端危险。

屠所牛羊

[tú suǒ niú yáng]

比喻临近死亡的人。

1、 蝴蝶披着彩色绚丽的衣裳,盘旋飞舞在花园之中。

2、 蝴蝶初翻帘绣，万玉女、齐回舞袖。

3、 海底的动物常常在窃窃私语。

4、 春天到了，小燕子匆匆忙忙地赶回来报信。

5、 啄木鸟会替树木看病，好像是树医生。

6、 初生牛犊对着老虎说：“我才不怕你呢!”

7、 变色龙大摇大摆地朝我走来。

8、 鸣蝉在树叶里长吟 。

9、 油蛉在这里低唱，蟋蟀们在这里弹琴。

10、 鸭子扭动着他那笨拙的舞姿，发出优美的歌声!

11、 小猫还有一双炯炯有神的大眼睛，瞳孔也能随着环境而忽大忽小。三角形的鼻子两侧长着许多胡子，闲着的时候它常在阳光下捋捋自己的胡子。

12、 我家的小乌龟高兴的时侯，它会在水里吹泡泡或是跳一跳乌龟舞，它跳舞的时侯真像一个顽皮的小妹妹，真可爱!

13、 鸟儿在树上欢快的唱着歌。

My family has a lovely little cat. It is a pair of ears like space-time probe, all the time doing the mouse look like.

Little cats ability to fight is first class. One day I was fishing, the little cat was sitting by me. Suddenly, a shadow behind me stood, then, small cat "hissing" cried. I am a head back, turned out to be a puppy, the dog was scared a few steps. Small cat this can be fierce, and its front paw against the forward, mouth crack a crack, revealing sharp teeth. Puppy filled with fear to look like, its beard straight upturned, U-turn on the road to go, small cat jump forward, hind legs pedal, to the dog chase Can be a dog to the side of the road when the exposed phase, the original is the puppys "slow tactics," small cat frightened, quickly turned to me to run here, the dog can catch up, look fast catch up , A small cat aimed at next to a tree, suddenly jump to the right, puppy caught by surprise. Small cat with claws to seize the trunk, "wind whiz" to climb all the way, the dog had to go disappointed, see the dog away, the cat slowly crawl down. Also proud of "meow meow" to call it. As if to say: "hey, you are also a poor donkey."

Little cat cat scratch the ability of the mouse is also good. Once I was sleeping. Suddenly, a burst of "squeaky" sound woke me up. I and the light of a photo, ah! The original small cat and two rats are fighting it I saw the two big rats are turning eyes, do not know what they would think of a ghost idea. Suddenly, a big mouse ran behind the little cat, the cat was quick, and the mouse was held, and then the legs were bitten with sharp teeth, and another rat was shocked, and it ran desperately. Cow is willing to let go, running quickly, not a few mice were caught by small cat, and toss too half to death.

Cute little cat, i love you.

Autumn is a mature, harvest season. I like the fall of the orchard, because it brings great joy to the people.

Into the autumn orchard, you will feel a trace of cool wind, sandwiched with a trace of fruit fragrance blowing, straight Qin your heart and spleen. Come to the world of fruit, you will shine: pomegranate, grapes, dates ... ... is almost dazzling.

Autumn orchard colorful, friendly fruit dolls put on new clothes, jump dance, welcome guests to come. Apple brother shy face, embarrassed to hide behind the leaves; grape sister put on a purple dress; persimmon like a small lantern, for people to lighting ... ...

Autumn orchard night, beautiful, beautiful so you can not describe. In the hazy moonlight, the night has added a trace of mystery, you faint can hear the sound of the growth of the fruit, looking at the night sky sleep so much, while the little stars are not restless, blinking blink, I Think of the story of the Cowherd and the Weaver: Once upon a time there was a Cowboy, the weaver took a fancy to him, but the weaver had committed the sky and was taken up by God. The Cowboy took the child riding the leather and flew up to the sky to find the weaver, but the Queen Mother A galaxy, they can only across the bridge across the year on July 7 to meet once.

I like the fall of the orchard, it can give me countless reverie; also make my mind clear.

我们要保护小动物，特别是小鸡这类弱小的动物，因为小鸡早晨可以叫我们起床，可以生一个又一个圆圆的的鸡蛋，还可以提供鸡肉给我们吃。

We need to protect the small animal, especially this kind of small animal chicken, because chicken morning to wake us up, can have a round egg, can also provide for us to eat chicken.

有一次，我和妈妈上菜市场，听见一位老奶奶在喊：“卖鸡了，今天的鸡又肥又嫩!”妈妈说：“今天，我们买一只鸡回家，炖汤喝。”我说：“好吧。”可又想了想：如果我们吃了鸡，那么就吃不到鸡蛋了，就对妈妈说：“不行，吃了鸡就没有鸡蛋吃了。”“傻孩子，你瞎操什么心啊!”妈妈不由分说地把我拉到卖鸡的那边。卖鸡的老奶奶正在杀鸡，只见她拔下鸡脖子上的毛，拿刀用力地在鸡脖子上划了几下。血喷向了四周，鸡挣扎了几下就死了。“太残忍了，我不要吃鸡!”我向妈妈大声的抗议。“好吧，不买了，我们就去买点蔬菜吧。”也许妈妈也觉得残忍，就同意了。

One time, my mother and I heard the food market, an old woman shouted: "chicken, chicken fat and tender today!" Mother said: "today, we bought a chicken soup to drink at home." I said: "OK." But think again: if we eat chicken, so cant eat the egg, the mother said: "no, not eat chicken egg to eat." "Silly boy, what do you care ah!" Mother allowing no explanation to put me into the chicken. The old woman was a chicken, she pulled out the hair on the neck, a knife in the neck with a few strokes under. Blood sprayed around chicken, struggled and died. "So cruel, I dont eat chicken!" I asked my mother loudly protested. "Well, do not buy, we went to buy some vegetables." Maybe mom was cruel, also agreed.

假如我们的生活中没有了动物，世界就会变得很孤独。我们要保护动物，从自身做起：少吃肉类食品，少穿皮衣毛衣;看见别人欺负动物，要勇敢地站出来劝说他们。

If we live without the animal, the world will become very lonely. We must protect the animal, start from their own: eat less meat, less wear fur sweaters; see others bully animal, we should stand up to persuade them.

保护动物，人人有责!

Animal protection, everyones responsibility!

Today is the happiest day in this holiday. Although I was very tired, I found myself in these busy day. I am afraid of taking a bus usually, the awful smell of the bus drive me mad ,make me feel carsick. But today I didnt feel carsick. I can defeat carsickness finally. At night I went out with an old friend who I ever liked him, but both of us were busy with the examination at the high school that we hadnt been together. I was so surprised that I received his calling. At first, I thought we would never meet after we graduated. Thank him gave me a happy day!

In the autumn garden, all kinds of flowers are hoping to smile in their most beautiful season of the year, leaving the best impression.

Autumn garden is very lively. White pear flowers exudes a touch of fragrance, as if really let people feel the sweet autumn, taste the fruit of autumn; dandelion in the autumn when the wind is the most lovable. Sometimes, it will catch you "hide", will take advantage of you do not pay attention, floating on your head, face, and sometimes accompany you to "walk" it! Dandelion also has a feature is: it in the morning and The evening is green, noon is golden, why is this?

Later, I learned a text, the title is "golden grass", read, I know, the original, dandelion petals open, is golden, when closed, is green. When the first chrysanthemum was just open in the autumn, we told us: "Autumn is about to leave, the winter is coming soon," but the colorful chrysanthemums are not afraid of the cold winter, they seem to stand on the grass in the garden to protect Garden "patron saint", so that the garden has become another fascinating world.

Autumn trees and grass is also very compelling, and some books are full of fruit, and some grass is still like spring they just germination so beautiful, so green, how beautiful ah!

I like the fall, like the garden of autumn, autumn garden like the pictures of the four seasons!

我最喜欢的动物My Favorite Animal

Do you know what kind of animal I like most? It’s monkey. Monkey is a kind of lovely animal. Many people like monkeys very much. Generally, monkey has small body covered with fur. Some kinds of monkeys have two big eyes and ears and a long tail. I can see them on TV or the zoo. Every time I go to the zoo, I will go to see them. Monkeys often stay in trees and jump between them. They are so lively and favorable. When they are happy, they will act for visitors. It’s very funny.

你知道我最喜欢的动物是什么吗?是猴子。这是一种非常可爱的动物，很多人都非常喜欢它们。一般来说，童子的身子比较小，身上长满了毛。其中的一些种类有两只大眼睛、大耳朵和一条长尾巴。我可以在电视上或动物园里看见它们。每次我去动物园，我都会去看猴子。它们常常待在树上，在树木之间跳来跳去，非常活泼，讨人喜欢。它们高兴的时候，还会特别表演给游客看，非常好玩。

Whenever I see a lively and lovely goldfish, my mind will emerge out of childhood goldfish scene, it is wearing a golden dress, long with two round eyes.

It was a cold winter, my mother bought me a small goldfish, small goldfish came home, I excitedly went to the fish tank to see it, but it is very afraid, in the fish tank probe, Out of the water, I had to keep it at a certain distance to see it. However, a few days later, I and small goldfish cooked, and small goldfish to see I will shake the tail, like to say hello to me, I will play with it some of it. But the problem again, and gradually, do not know why, little goldfish and ignore me, feeding it, it does not, I asked my mother, but my mother is very esoteric, I do not understand, so I had hope Little goldfish back to the original look like ...

Night, the cold bitter, cold I shiver, then, I thought of my little goldfish, afraid of it frozen, so, from the bed, went to the fish cake and found that small goldfish motionless, eyes also No look, straight hook eyes open, I saw that small goldfish has been frozen, and quickly replaced the ice water into hot water, this time, small goldfish in the water lively jump up, but, like No head flies like left and right hit, I thought it was too excited, and ignored, but also proudly said: "If I had water heat, and small goldfish are now dead!" Then, I back To bed, sleep peacefully.

The next day, I got up early in bed, the front of the scene was shocked - small gold fish raised his head, floating on the water, no breath was gone, I "wow wow" crying, my mother anxious Came, asked, I told my mother last night, my mother heard, smiled: "little fool, little goldfish is in the hibernation A, and goldfish can not live under hot water!" Listen to the words of her mother , I suddenly realized, blushed up.

Although this thing has been a long time, but through this matter, let me understand that the living environment of animals is not free to change, like a small goldfish ... ...

我的家乡在有“鱼米之乡”美称的洞庭湖畔，那里是自然保护区，我国首届“观鸟节”就曾在那里举行。

我的家乡真不愧是鸟的天堂！你看，成群结队的鸟儿时而在天空中自由地飞翔，时而在水面低低地盘旋，时而排成个“一”，比赛谁飞得快，时而又组成一个大大的“O”，在一起跳起了欢乐的圆舞曲。看到这些美丽的情景，我的心情是多么快乐！我好像也变成了一只鸟，和天上的鸟儿一起飞呀飞！

听妈妈说，十年前我们这里的鸟儿几乎灭绝。一些不法之徒大肆捕捉鸟儿，甚至连鸟蛋也不放过。可怜的小鸟有家不能回，有亲却不能聚，只好伤心地飞走了。我想我的家乡要是没有了鸟儿，不知道是什么样的情景！可喜的是，自从这里被划为自然保护区后，人们的爱鸟意识增强了，而且还设立了自然区保护法，使家乡的环境得到了改善。鸟儿们重新回到了自己的家，呼朋引伴好不热闹！这里又成了鸟的天堂！

啊，听到这些我是多么高兴！我多想大声告诉所有的人，让我们一起来保护鸟类，让我们和鸟儿成为真正的好朋友，一起在地球村快乐地生活。

When the Arctic Ocean freezes over in the autumn, polar bears set off in search of their favorite meals: fatty ringed seals and bearded seals. By the summer, the sea ice begins to melt and break apart. Deprived of access to the tasty seals, polar bears spend the summer fasting. At least, thats whats supposed to happen. As the planet warms, the warmer ice-free season is getting longer and longer. So whats a hungry bear to do?

Scientists once thought that polar bears might survive by supplementing their pinniped diet by turning to terrestrial foods like snow geese, their eggs and caribou.

"Weve had this debate in the literature about whether terrestrial foods are nutritionally relevant to polar bears during the on-land season when the ice has melted."

University of Alberta biologist Nick Pilfold.

"And weve known for a long time, going back to research in the early 70s, even going to back to early explorer logs, that polar bears will consume terrestrial based foods. But the debate was always whether those foods actually add up, energetically." In other words, do these substitutes provide enough nutrition to make up for the lost seals?

To find out, Pilfold and his colleagues estimated the weight lost each day by polar bears in the wilds of western Hudson Bay during the ice-free season, when they could ostensibly be chowing down on terrestrial foods. Then they compared that to the weight lost by bears that are temporarily held in Manitobas Polar Bear Alert Program.

While captive, the bears do not eat. They drop about one kilogram each day. But the wild bears, who had access to the Arctic snack bar, lost the same amount of weight each day. The results are in the journal Physiological and Biochemical Zoology.

"Which is really saying that the terrestrial foods do not have dense enough energy to offset the mass loss. So this idea that bears can just switch from eating sea ice–based food to land food and thats going to help supplement against longer ice-free seasons, that really doesnt show up in the data."

The problem is that polar bears evolved to rely on the marine diet.

"The food on land is protein and carbohydrate based, and the food the polar bears really focus on is fat. Fat is the name of the game for these bears; theyre highly adapted to absorbing that fat into their system and putting it onto their body as body mass, so they can fast on it later on. And the only thing thats going to provide them with that type of fat are marine mammals. And they can only access those marine mammals when theres sea ice."

Adult males can go eight months without food. But younger, sub-adult bears, which are no longer nursing and must hunt, cant last as long without sea ice. So as the Arctic warms, younger polar bears will disproportionately die out. Leaving the species survival in doubt.

北冰洋在秋季结冰以后，北极熊就会出发去寻求它们最喜欢的食物：富含脂肪的海豹和胡子海豹。海冰在夏季开始融化断裂。这使北极熊在夏季无法吃到美味的海豹，所以它们进入禁食期。至少，情况应该是这样。但是由于地球变暖，温暖的无冰季节越来越长。那饥饿的北极熊要怎么办?

科学家曾经认为，北极熊可能会转向陆地上的食物来补充它们对鳍足类动物饮食的需求，进而生存下去，这些陆地食物包括雪雁、雪雁蛋和北美驯鹿。

“文献中有过这类辩论，即在寒冷融化时陆地食物是否能满足北极熊的营养需求。”

尼克·皮尔福德是加拿大阿尔伯塔大学的生物学家。

“通过上世纪70年代初的研究，还有早期的探险者日志，我们很早以前就知道，北极熊会以陆地食物为食。但是辩论的焦点在于，这些食物是否能增加北极熊的能量。”换句话说，这些替代食物能否为北极熊提供足够的营养，弥补不能进食海豹带来的损失?

为了解开这个疑惑，皮尔福德及同事对西哈德逊湾荒野地区的北极熊在无冰季期间每天失掉的体重进行了估算，从表面上看，北极熊在这段时间食用了陆地食物。随后，他们将这一数据与通过马尼托巴北极熊预警计划暂时捕得的北极熊所失掉的体重进行了对比。

在被关期间，北极熊不吃东西。它们的体重每天大约下降1公斤。虽然野生北极熊能享用北极“小吃”，但是它们的体重每天也同样会下降1公斤。这一研究结果发表在《生理学和生化动物学》期刊上。

“显然结果表明，陆地食物不能为北极熊提供足以抵消大量损失的能量。所以，北极熊可以从食用海冰下面的食物转向食用陆地食物，并帮助它们对抗日益延长的无冰季这个观点，并没有在这项数据中得到证明。”

问题是，北极熊进化成了依靠海洋食物的动物。

“陆地食物以蛋白质和碳水化合物为基础，而北极熊需要的食物以脂肪为主。脂肪是这些熊真正需要的东西;它们高度适应的情况是，将脂肪吸收进它们的系统中，然后把这些脂肪放在身上以增加体重，这样它们之后就可以依靠这些脂肪来度过禁食期。唯一能提供给北极熊这种脂肪的就是海洋哺乳动物。但是它们只能在有海冰时食用到这些海洋哺乳动物。”

成年北极熊可以8个月不进食。但是小一些的未成年北极熊已经不再被哺育，它们必须要去猎食，可是它们不能在漫长的无冰季期间一直不进食。所以，随着北极地区变暖，较小的北极熊将会大批死亡。这使这些物种的生存成为问题。

Since the childhood like monkeys, because it looks very interesting.

Its head is always kept, eyes are east Chou west look, seems to be especially alert. Its ears pointed out, as long as there is any voice, it will. You scratch it little fluffy, a moment that, clenched it after a while, always do. A yellowish-brown fur also as it is not honest body shaking, as if she was full of lice, this is fun. Monkeys limbs is very flexible, blink of an eye kung fu can move from one tree to another tree, sometimes used it long tail roll the branches on the swings, let me see the very is envy.

Monkeys have a lot of skills. On one occasion, our family went to the circus performance, turn the monkey play, see it quickly on the bike, bottom a twist twist to turned around and turn around the site. Saw it on the spinning bike for a while to a handstand, for a while over, and the superb skills that I may see it is stunned, think about your bicycle also fell a couple of times, in the sight of the little monkey cant help but let me sit up and take notice. Just thinking, little monkey came to the next to the steel wire rope, swaggering go up, it surprised me. All the audience hold their breath, staring at the thin wire. Little monkey is easily walked forward firmly. Suddenly, it to a big upside down, the audience and a brawn, it upside down. This bottom can be shocked the whole audience, thunderous applause to the special animal actors, I am more excited to quickly put the red film.

Oh, little monkey is so the stars of the animal kingdom!