七年级英语时文阅读理解

Pands were sent to Taiwan from the Chinese mainland.中国大陆给台湾送了2只熊猫 Tuan Tuan and Yuan Yuan play outdoors at the Taipei Zoo,Taiwan, on Valentines Day,Feb.14,2009.团团圆圆在台湾台北动物园的户外玩耍, 09年的2.14情人节The place for the pair's outdoor doings is as big as 750square meters and there are trees,grass,a waterfall and hills in the zoo like the real place they live.这一双熊猫的户外活动场所有750平方米那么大,有树,草,瀑布和动物园里像他们原先居住的地方一样的山To stop the pair from running away,the pandas are separated from visitors by a big glass wall.为了阻止这对熊猫乱跑,他们和游客之间被用玻璃墙分隔开People in the zoo say that 330,000 visitors so far hve come to see the pandas.动物园的工作人员说到目前为止有330000个游客观赏过熊猫

动物英语故事

 随着科学技术的飞速发展和全球化进程的不断加快,科普 文章 在向社会大众普及科学技术知识,提高公众科学素养等方面发挥着举足轻重的作用。下面是我带来的科普类英语文章,欢迎阅读!

科普类英语文章

 生物与环境平衡的危机

 The history of life on earth has been a history of interaction between living things and their surroundings. To a large extent, the physical form and the habits of the earth?s vegetation and its animal life have been molded by the environment. Considering the whole span of earthly time, the opposite effect, in which life actually modifies its surroundings, has been relatively slight. Only in the present century has one species man acquired significant power to alter the nature of his world.

 During the past quarter century this power has not only become increasingly great but it has changed in character. The most alarming of all man?s assaults upon the environment is the contamination of air, earth, rivers, and sea with dangerous and even lethal materials. This pollution is for the most part irrecoverable. In this now universal contamination of the environment, chemicals are the sinister partners of radiation in changing the very nature of the world the very nature of its life. Chemicals sprayed on croplands or forests or gardens lie long in soil, entering into living organisms, passing from one to another in a chain of poisoning and death. Or they pass mysteriously by underground streams until they emerge and combine into new forms that kill vegetation, sicken cattle, and work unknown harm on those who drink from once pure wells. "Man can hardly even recognize the devils of his own creation," as a scientist has said.

 It took hundreds of millions of years to produce the life that now inhabits the earth. Given time not in years but in millennia life adjusts, and a balance has been reached. But in the modern world there is no time.

 The rapidity of change follows the impetuous pace of man rather than the deliberate pace of nature. Radiation is now the unnatural creation of man?s tampering with the atom. The chemicals are the synthetic5 creations of man?s inventive mind, having no counterparts in nature.

 To adjust to these chemicals would require not merely the years of a man?s life but the life of generations. And even this, were it by some miracle possible, would be futile, for the new chemicals come from our laboratories in an endless stream; almost five hundred annually find their way into actual use in the United States alone. Among them are many that are used in man?s war against nature. Since the mid 1940?s over 200 basic chemicals have been created for use in killing insects, weeds, and other organisms described as "pests."

 It is not my contention that chemical insecticides must never be used. I do contend that we have put poisonous and biologically potent chemicals indiscriminately into the hands of persons largely or wholly ignorant of their potentials for harm. We have subjected enormous numbers of people to contact with these poisons, without their consent and often without their knowledge. I contend, furthermore, that we have allowed these chemicals to be used with little or no advance investigation of their effect on soil, water, wildlife, and man himself. Future generations are unlikely to forgive our lack of concern for the integrity of the natural world that supports all life.

 地球上生命的历史一直就是一部生物与其环境相互作用的历史。在很大程度上,地球上动植物的形态以及习性都是由外部环境所塑造的。考虑到地球上生命存在的整个时间,相反作用,即生命对其周围环境的实际改变作用,却相对很小。只有在当前这个世纪(指20世纪)才有一个物种--人类,获得了强大的力量,改变了其所生存的世界的自然状态。

 在过去的1/4世纪中,这种力量不仅日趋强大,而且其性质也发生了变化。在人类破坏环境的种种行为中,最令人担忧的是人类向大气、土壤、河流以及海洋中排放危险甚至致命物质,而当今这种污染在很大程度上是无法挽救的。在当今这种对环境的普遍污染中,化学制品与辐射狼狈为奸,改变着地球的自然状态,也就是改变着地球上生命的自然状态。喷洒到农田、森林或者花园里的化学物质长期滞留于土壤中,渗入有机体内,并彼此相传,形成了一个中毒与死亡的链条。化学物质还神秘地通过地下水传递,最终以新的形式出现并结合,使植物毒死,牲畜害病,并使饮用一度纯净的井水的人遭受了不明之害。正如一位科学家所言:?人类甚至对自己创造的恶魔都不认识。?

 地球历经了许多亿年才创造了栖息其上的生命。经过了一定时间--不是以若干年计而是以若干千年计的时间--生命开始适应环境,并形成了一种与环境的平衡。但是在现代世界中,时间这一因素已经没有了。

 环境改变的速度不再顺从大自然从容不迫的节奏,而是顺从人类急切匆匆的步伐。辐射是当今人类通过支配原子而得到的一种非自然的创造物。化学制品则是人类有发明创造力的头脑创造出来的合成物,在自然界本无相应的东西。

 为了适应这些化学制品,人类需要付出的时间不会只是一个人一生的时间,而是几代人的时间。而即使这样,就算出现奇迹成为可能,这种适应也是徒劳的,因为新的化学制品从我们的实验室中源源不断地涌出。仅在美国,每年就有大约500种化学制品投入使用,其中许多是用于人类对自然的战争中。从20世纪40年代中期起,人类已经创造了200多种基本化学制品用来消灭昆虫、野草以及其他所谓的?有害生物?。

 我不是说人类决不能使用化学杀虫剂。我要说的是,我们不分青红皂白地将这些有毒的、具有强大生物功能的化学制品,交给了那些对这些制品的潜在危害基本上或者完全无知的人去使用。我们使众多的人接触这些有毒物质,却没有征得他们的同意,并常常将他们蒙在鼓中。我还要说的一点是,我们允许使用这些化学制品,却事先很少或者根本没有调查它们对土壤、水、野生生物以及人类自身造成的影响。我们缺乏对万物赖以生存的自然界生态统一的关心,对此,我们的后代是不可能原谅的。

科普类英语文章

 基因技术能否使人更聪明?Get Smart

 Many people dream of having a smarter brain. Princeton neurobiologist Joseph Z. Tsien found the key. In September he announced that he?d built a better mouse by altering a gene that affects learning and memory. A similar process of gene manipulation might conceivably be used one day to boost intelligence in humans.

 The secret lies in a feature of brain cells called the nmda receptor, which Tsien likens[1] to a cylindrical tube or window that mediates[2] the flow of information. When the window is open, chemicals called neurotransmitters flow through easily and memory is registered and stored. But as organisms mature, the window begins to close. (This may explain why children lose their facility for learning new languages when they reach sexual maturity and why some people suffer memory loss as they age.)

 Tsien noticed that the receptor worked more efficiently when teamed[3] with the gene NR2B, so he introduced extra NR2B genes into a batch of fertilized mouse eggs. In a normal mouse, the memory window is open for just 150-thousandths of a second. In Tsien?s specially engineered mice, the window opens for 250-thousandths of a second, long enough to make a remarkable difference in memory retention. When he pitted[4] his mice against common mice, they won paws down. Ordinary mice could recognize a Lego block for 12 hours, but smart mice could remember the block for up to three days. "That?s a profound enhancement," Tsien says.

 Can it be done with humans? Maybe, but genetic engineering will have to make some extraordinary advances first. And some thorny ethical issues will have to be resolved. Meanwhile, Tsien promises to keep his furry little geniuses locked up in a lab, far from your larder. "Otherwise," he says, "you might need a smart cat or a smart mousetrap to catch them."

 许多人都希望自己能变成更聪明。普林斯顿神经生物学家Joseph Z. Tsien就找到了这把开启智慧之门的钥匙:他于九月宣布,通过改变影响学习和记忆能力的基因培养出了一只聪明的老鼠。类似的基因处理技术有望在未来日子里运用到人脑,以推动人类智慧的飞跃。

 该技术的奥秘就在于名为nmda感受器的脑细胞的功能。Tsien将其比作一个传递信息流的圆柱通道或窗口。当窗口开放时,某种称为神经传递素的化学物质就能轻易流过,记忆因此登记并存储了下来。然而,当器官成熟时,这扇窗口就开始关闭。(这也能解释为何 儿童 长大后(性器官成熟之时)会失去掌握新语言的能力,以及为何某些人年老时会患失忆)。

 Tsien注意到,当感受器与名为NR2B的基因协作时效率会更高。因此,他将NR2B基因植入一批老鼠的受精卵中。一只普通老鼠的记忆之窗仅开放千分之150秒。而经Tsien植入基因的老鼠,记忆之窗能开放千分之250秒,这已经能够使其 记忆力 发生惊人的改变。当他让自己的老鼠与普通老鼠互斗时,它们竟能轻而易举地取胜。普通老鼠能够保留关于Lego block的记忆12小时,而聪明的老鼠居然能将记忆保持三天。?这可是一个意义深远的进步。?Tsien这样说。

 那么,人类也能接受这种基因移植吗? 或许可以,但前提是基因工程得首先做出非凡的成就,还必须解决一系列棘手的伦理问题。Tsien保证他一定会将那些披着毛皮的小天才锁入实验室,远离人们的食品柜。?否则,?他说,?为了捉住他们,人们就不得不去寻找更聪明的猫或者功能更强的捕鼠器了。?

  科普类英语文章

 食用转基因食品安全吗?Food Safe To Eat?

 Traditional plant breeding involve s crossing varieties of the same species in ways they could cross naturally.For example,disease-resistant varieties of wheat have been crossed with high-yield wheat to combine these properties.This type of natural gene exchange is safe and fairly predictable.

 Genetic engineering(GE)involves exchanging genes between unrelated species that cannot naturally exchange genes with each other.GE can involve the exchange of genes between vastly different species――e.g.putting scorpion toxin genes into maize or fish antifreeze genes into tomatoes.It is possible that a scorpion toxin gene,even when it is in maize DNA,will still get the organism to produce scorpion toxin――but what other effects may it have in this alien environment?We are already seeing this problem――adding human growth hormone genes to pigs certainly makes them grow――but it also gives them arthritis and makes them cross-eyed,which was entirely unpredictable.

 It will be obvious,for example,that the gene for human intelligence will not have the same effect if inserted into cabbage DNA as it had in human DNA――but what side-effect would it have?In other words,is GM food safe to eat?The answer is that nobody knows because long-term tests have not been carried out.

 Companies wanting a GM product approved in the UK or USA are required to provide regulatory bodies with results of their own safety tests.Monsanto?s soya beans were apparently fed to fish for10weeks before being approved.There was no requirement for independent testing,for long-term testing,for testing on humans or testing for specific dangers to children or allergic people.

 The current position of the UK Government is that? There is no evidence of long-term dangers from GM foods.?In the US,the American Food and Drug Administration is currently being prosecuted for covering up research that suggested possible risks from GM foods.

 传统的植物培育 方法 ,是依照植物自然杂交的方式,进行相同物种的人工杂交。比如,抗病小麦同高产小麦杂交,形成了一种具有双重特性的新的小麦品种。这种自然的基因交换既安全,又具有相当的可预见性。

 基因工程是在彼此毫无关系的物种之间,相互交换在自然条件下无法交换的基因。它可在有巨大差异的物种之间进行基因交换。比如,将蝎子毒素基因注入玉米,或者将鱼防冻基因注入西红柿。即使在玉米DNA中,蝎子毒素基因依然可能获得有机组织产生蝎子毒素。但是在这种异质的环境中,这种基因产品会有什么其他作用吗?我们实际上已经发现这个问题:将人类生长荷尔蒙基因植入猪的体内,一定会使猪的生长加速,但是同时也使猪患上了关节炎和内斜视,而这一切是完全无法预测的。

 打个比方,人类的智力基因显而易见在人体DNA内和注入卷心菜DNA后的作用是不同的。但将它植入卷心菜中会产生什么样的副作用呢?换句话说,食用转基因食品安全吗?没有人知道答案,因为人们尚未进行长期的测试。

 在英国或者美国,一个公司如果希望其转基因产品获得批准,它必须向管理机构提供本公司转基因产品安全测试的结果。Monsanto的大豆在获得批准之前,曾用了10周时间进行喂鱼试验。目前,尚无要求对转基因产品进行独立测试、长期测试、人体测试,或者就其对儿童及过敏者所造成的特定危险进行测试。

 英国政府目前的态度是:?尚无证据表明食用转基因食品存在长期性的危险。?在美国,人们正在起诉美国食品药品管理局掩盖转基因食品安全性的研究结果,这些研究结果表明,食用转基因食品可能导致危险。

 说说自己知道的'动物故事,让同学从你描述的故事中体会动物的情感,加深对动物的了解和认识。以下是动物英语故事,欢迎阅读。

 动物英语故事1

 Today, the sky is high. Mother rabbit let small white rabbit and little grey rabbit go to the other side of the river to collect watermelons.

 The two of them went out happily, but when they met a small river on the road, they stopped. The two of them thought and thought. There's no good way to think about it for a long time. After a while, a little squirrel came, and the little white rabbit and the rabbit hurried to ask the little squirrel for help. Say: "squirrel big brother, quick help us to think a way to cross a river!" The little squirrel thought to say: "have, have!" The little white rabbit and the little gray rabbit hurriedly ask: "what method did you come up with?" The little squirrel said, "each of you will find a stick, and you can cross the river with the stick." The two rabbits happily said, "great! Thank you, brother squirrel. The little squirrel said, "you're welcome." The little white rabbit and the rabbit crossed to the other side of the river. They came to the watermelon field and were busy, and soon they were finished. On the way home, I met the river again, and the little white rabbit came up with a solution. It said, "we cut the big watermelon in half and ate the insides inside, so we can sit inside and not be able to cross the river." "That's a good idea," said the little grey rabbit happily. That's how they got through.

 I think little white rabbit and little grey rabbit are really clever!

 动物英语故事2

 The horse was not convinced after the 12 zodiac signs, because the short rabbit had run a fourth, and he ran seventh! So he decided to compare it with the rabbit tomorrow.

 The next morning the horse went to the rabbit. He walked east and west, and finally found the rabbit in the garden. "Rabbit!" cried the horse. The rabbit looked back and saw the horse. I was so bad yesterday that I came to see you today.

 The rabbit agreed to the horse's request. The horse said, "let's take this as the starting point, and make your home as the destination, okay?" The rabbit agreed.

 With a "start", the horse and rabbit race into the track. The horse took the lead at the beginning. He said to the rabbit, "I thought you were good. The original also is that two son!" The rabbit again say: "now lead does not mean you can achieve victory, later have you good-looking!" With that, he went at full speed ahead of the horse. The horse said, "it's not easy to catch up with me, but I want to beat me. You're far away! The sound had just fallen out of the roar of the wind. He looked back and saw no sign of the rabbit. He decided to take a break. But he had just sat down for less than five minutes when he saw a shadow pass by. What a surprise! The rabbit is catching up! The horse didn't even think about it, and ran away with his long legs, but he never caught up with him again.

 At the end, the rabbit said, "big brother, I admit you run faster than me, but where did you lose this time?" The horse listened and bowed his head.

 动物英语故事3

 Once upon a time there was a beautiful cock, but it all day, but want to get the respect of people, so for someone and it than everywhere, and reference only after know beauty, appearance and other animals in the heart.

 It was a beautiful cock with a colorful tail and a big comb on his head.

 One day, the rooster came to the forest and saw the woodpecker. The rooster ran away and said, "miss wood is not as beautiful as we are." The woodpecker said: "rooster big brother I don't like you so beautiful but my heart is more beautiful than you." The cock said, "how can you be beautiful inside?" The woodpecker said, "it is the inner beauty that I am." The cock said, "I will not peck the tree." With that, I walked away, thinking about the inner beauty of the whole journey. Before I knew it, I came to the bullpen and bumped into the old cow and said, "how can the big brother do the inner beauty?" The old cow said, "what can you do?" The cock said, "my skill is to sound." The old cow said, "you can give people a ring." The cock says: thank you big brother." Then he went away

 The rooster came to the blind old woman and whined. The cock fights once in the morning, once at noon, and once in the afternoon. Grandma saw the chicken very cute and gave a handful of rice to the chicken, but the rooster went away after a dozen.

 Since then, the rooster has been respected by people.

 动物英语故事4

 The goat has two friends, one is a small sparrow and the other is a red-crowned crane.

 One day, the red-crowned crane accidentally stepped on the hunter's hunting jacket while taking a walk. The crane was very worried, like an ant in a hot pot. Then the goat passed by and saw that his friend was in trouble. "I should help the red-crowned crane." The goat thought. The goat then pricked the hunting clip with the horn on its head. The red-crowned crane was saved, the goat's horns were caught, and the goat said to the red-crowned crane, "I saved you just now. Now you should save me." The red-crowned crane said, "I don't have a powerful horn like you. I can't save you." Then he patted his wings and flew away.

 The sparrows who were in the tree saw it and said to the goat, "I cannot save you, but I have a way. You close your eyes and put your hands and feet on the floor. When the hunter unlocks the trap, I call three and you run, okay? The goat nodded and said, "good attention!" . Then the hunter came to the goat and looked at him and said, "this goat is very nice. But it's dead." The hunter opened the trap, and the little sparrow chirped three times, and the goat heard it and ran away, saving a life.

 动物英语故事5

 In autumn, the charming scenery is like wine. The industrious ants are not in the mood to play. They are storing up the food they need for the winter.

 Two large ants saw off a large potato with a small saw. Many young ants carry, carry, pull, push and push.

 See, the ant empress also personally to drag an apple, one pull a lameness, still really laborious!

 At that moment, the grasshopper, with a heavy purse, hopped on to the flower, and then on to the flower, tasting the honey of the flower, and tasting the juice of the flower.

 At that moment, the queen of the ants dragged the cart down the road. "Alas, the queen herself, great!" "Said the grasshopper, falsely. "Mr. Grasshopper, winter is coming. Why don't you store your food?" "Asked the queen. "I have money! The grasshopper patted the bag of money. "as the saying goes, money makes the mare go!" The queen shook her head and went away.

 Winter is coming, snow and ice cover the whole earth. The grasshopper, with its purse, went away from house to house, and no one wanted to sell it to him.

 The grasshopper came to the door of the ant and saw that it was a sea of joy: cheers, baked potatoes, honey... The grasshopper was not eager to knock on the door, but the ants ignored him. "Only a laborer can live with our ant family," said the queen. "we don't need an admirer of money!"

 The grasshopper had a strap, and went away shamefaced into the snow. Then it disappeared with the purse.

 动物英语故事6

 In a forest, there are two beautiful swans. They live on the east side of the lake. One is called lingling, and the other is xuan xuan. Their feathers are like the white snow in the moonlight, pure and pure and mysterious, so they call them "snow swans".

 Unfortunately, they thought they were the most beautiful swans in the forest and looked down on each other. But I am afraid that in some situation, if I meet the other side, I will lose face if I do not meet the other side. Therefore, on the occasion of lingling, she would not participate. And the occasion that xuan xuan attends, lingling also does not attend.

 Unfortunately, lingling and xuan xuan met each other on the road today, and instead of saying hello, they all fell to each other. Lingling said, "well, I thought I was beautiful. It's ugly to wear such a big bow on your head. Xuan xuan said: "dare to call me ugly? Don't look at your ugly face first.

 The more noise they made, the more animals in the forest came to watch. Then they got up and began to peck at each other's feathers, so that they could not pull it apart, so that everyone could not help but shake their heads and sigh.

 In the end, the pair of "snow swans" got tired, and the feathers on their whole body were also pecked out. They are so competitive that they only end up being "both losers". It's not worth it to be a "hairless swan".

 动物英语故事7

 Once upon a time, there lived a cat, a rabbit and a sly fox in the forest.

 One winter day, the cat came out to fish for the sick mother. It chiseled the ice out of the river and caught a big fish. When the fox saw it, his mouth watered. It used to say to the kitten: "Kitty, your good friend rabbit is sick, he is very hungry for fish now."

 "No way, you want my fish?" Said the cat.

 'you can't believe it! Said the fox. "Then you take me to see!" "Said the smart cat.

 When they came to the rabbit's house, they saw that the rabbit had a good time. The cat knew that the fox had lied to him and tried to teach the sly fox a lesson. So the cat said to the fox, "if you put your long tail in the river, you will get a lot of fish!" The fox put his tail in the river. A cold wind blew, and the fox's tail was frozen!

 The fox never dare to deceive others!

 动物英语故事8

 The little cat, the little squirrel and the rabbit brother are going to play on the other side of the river. By the river they were in trouble. "How do you cross the river?" said the little cat. "We can call the elephants behind us and let the elephants carry us across the river." The little squirrel had a brainwave, and everyone said happily, "that's right! That's a good idea.

 They came to the elephant and said to the elephant, "uncle elephant, we can't cross the river. Can you carry us back?" The elephant agreed.

 The elephants carried them on their backs and carried them across the river. "Thank you," the animals said gratefully. Elephant uncle."

 动物英语故事9

 Every day the little bird busied itself with its branches to build its own house.

 A fly came up and sneered at him and said, "you are such a man who can't enjoy life and don't know how to be happy! Look at me, living in a lazy pig's house, the wind is not blowing, the rain is not in the rain, singing and dancing all day, enjoy life happily, how comfortable!"

 The bird looked at the fly scornfully and continued to build the house.

 The lazy pig was inspired by the birds and worked hard. He cleaned the room, put on a beautiful screen, and drove the flies out of the door.

 When it rained, the homeless flies were caught in the rain and ran away. And the little bird sang happily in the house he had built.

 The fly finally understood: it is the fruits of your hard work that make you truly happy.

 Sister squirrel's love.

 The sky was overcast as if it were going to rain. The little bird was playing with the little frog, the little bird sang, and the little frog danced. They had a good time. Soon it began to rain, and the little frog jumped into the river with his umbrella and the little bird flew under the tree to shelter from the rain. Then sister squirrel came to this place and saw the bird say to her, "sister bird, come to my house and shelter from the rain!" "Thank you, sister squirrel," said the bird. So they went back to the tree house together.

 The rain stopped, and a beautiful rainbow appeared in the sky. Birds and squirrels came out of the hole to look at the beautiful rainbow. They looked at each other and smiled.

 Squirrel sister's love is like a beautiful rainbow!

 动物英语故事10

 Once upon a time, there was a little rabbit who loved to take a nickname. Whenever he saw a man, he would immediately give someone a nickname.

 One day, the rabbit went to play in the park, the cow uncle saw to say: "little rabbit, hello!" The rabbit looked at it and said, "long horn, hello!" The cow uncle listened angrily to walk, the side walk in the mouth to whisper: "this really is a not sensible child." Then the little rabbit saw the elephant mother again, the elephant mother say: "little rabbit, how are you?" The rabbit say: "I am very good, long nose strange." The elephant mother listened with tears in her eyes and walked away sadly. The little monkey that can't see go to come out to say: "red eye disease, hello!" The rabbit ran away crying. The little monkey smiled and said, "this is the way to deal with a person."

 动物英语故事11

 In the morning, it was sunny and sunny, and a race was held in the animal kingdom. The lambs and the little monkeys joined in, and they heard the whistle, and they ran. They're scrambling to catch up with you.

 The little lamb and the little monkey ran very fast, and saw that they were at the top of the line. Suddenly the monkey accidentally stepped on the foot of the lamb, and the lamb fell down. The little monkey stopped and said to the lamb, "I'm sorry." "That's all right," said the lamb. "I'll carry you." "The little monkey said to the lamb. The little monkey turned the lamb back to the end, and the little animals passed them, and the little monkey kept on carrying the lamb to the end.

 They were the last to arrive, but the audience was moved by their actions, and the king gave them a spiritual prize.

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