實(shí)用的英語(yǔ)作文合集六篇
無(wú)論是在學(xué)校還是在社會(huì)中，大家一定都接觸過(guò)作文吧，根據(jù)寫作命題的特點(diǎn)，作文可以分為命題作文和非命題作文。如何寫一篇有思想、有文采的作文呢？下面是小編精心整理的英語(yǔ)作文6篇，僅供參考，大家一起來(lái)看看吧。
英語(yǔ)作文 篇1
Campus safety is a serious problem that is worth our attention in education, especially when tragic events happened. The stampede at a middle school in Hunan Province which took eight teenagers’ lives and injured 26 others still stuck in our mind.
The tragic events serve as a warning sign to call on everyone to protect campus. Schools across the country should treat safety education seriously and put it into action compulsorily. Besides, they should revise their emergency preparedness plans and tighten security. For example, security guards should patrol campus seriously such as teaching buildings and student dorms, and enforce strict entrance checks, barring entry to anyone carrying a gun or a knife.
As students, we should strengthen our knowledge of safety, which requires us to be alert to some potential hazards in our daily life. For example, lock the dorm at night or whenever we are alone in dorm.
英語(yǔ)作文 篇2
It's said that Chinese students lack working and real-life experience.
據(jù)說(shuō),中國(guó)學(xué)生缺乏工作和實(shí)際生活經(jīng)驗(yàn)。
So the first thing in my mind for job is one that can give me enough experience.Second,in order to make a warm-up for my future work,I want to get a job that relates to my major in university.Third,I want to improve my ability of communicating. So these are my goals in finding a job.
所以，對(duì)于找工作在我腦海里出現(xiàn)的第一點(diǎn)是富有經(jīng)驗(yàn)。其次，為了給我未來(lái)的工作熱身，我想找一份與我大學(xué)專業(yè)有關(guān)的工作。第三,我想提高我的溝通能力。這些就是我在找工作時(shí)的目標(biāo)。
Before I go to realise it,I should make full preparations for it.First of all,I will determine what I want to do.It comes to my mind to be a personal teacher. Because it meets all my expectations.I major English in school,so I can use what I learn.Besides,I can really find a stranger to talk to and to study with.If I did well,I should be thanked and give another person some help.
在我實(shí)現(xiàn)它前，我應(yīng)該做好充分的準(zhǔn)備。首先，我會(huì)決定我自己想做什么。我覺得我想做一名人民教師。因?yàn)樗衔宜械钠谕Ｔ趯W(xué)校時(shí)，我的專業(yè)是英語(yǔ)，所以我可以用上我所學(xué)到的。此外，我真的可以隨便找個(gè)陌生人來(lái)聊天、一起學(xué)習(xí)。如果我做得好，我應(yīng)該得到感謝并且繼續(xù)幫助另外的人。
Last but not least,being a personal teacher can get a good salary.
最后但并非最不重要的是，作為一個(gè)人民教師能得到不錯(cuò)的薪水。
英語(yǔ)六級(jí)作文范文和題目 Do “Lucky Numbers” Really Bring Goo
六級(jí)作文題：
Directions: For this part, you are allowed thirty minutes to write a composition on the topic Do “Lucky Numbers”Really Bring Good Luck? You should write at least 120 words and you should base your composition on the outline (given in Chinese) below:
1. 有些人認(rèn)為某些數(shù)字會(huì)帶來(lái)好運(yùn)。
2. 我認(rèn)為數(shù)字和運(yùn)氣無(wú)關(guān)，......
Do “Lucky Numbers” Really Bring Good Luck?
范文：
Some people take it for granted that some lucky numbers can bring them good luck. For instance, the so-called lucky number “8” is widely used now because it is sounded like “getting rich” in Chinese and is believed to bring good fortune.
Yet many others don't think so. They think that numbers have nothing to do with luck. They regard numbers simply as a mathematic symbols for counting. They are anything but a mystery. They laugh at those who think numbers can bring good luck.
I'm in favor of the latter opinion. I think our society is very modern now. We mustn't count on the so-called lucky numbers to fulfill our wishes. Whether we can have good luck depends on ourselves. If we work hard, good luck will come to us.
有些人想當(dāng)然，一些幸運(yùn)數(shù)字能夠?yàn)樗麄儙?lái)好運(yùn)。例如，所謂的吉祥數(shù)字“8”現(xiàn)在被廣泛應(yīng)用，因?yàn)樗犉饋?lái)像“發(fā)財(cái)”，在中國(guó)，被認(rèn)為是帶來(lái)好運(yùn)。然而，許多人不這么認(rèn)為。他們認(rèn)為，數(shù)字與運(yùn)氣無(wú)關(guān)。他們認(rèn)為簡(jiǎn)單的數(shù)字作為計(jì)算的數(shù)學(xué)符號(hào)。他們不是一個(gè)謎。他們嘲笑那些認(rèn)為數(shù)字可以帶來(lái)好運(yùn)的人。我是贊成后者的意見。我認(rèn)為我們現(xiàn)在是現(xiàn)代社會(huì)了。我們不能指望所謂的幸運(yùn)數(shù)字?jǐn)?shù)能實(shí)現(xiàn)我們的愿望。我們是否能有好運(yùn)氣取決于我們自己。如果我們努力工作，好運(yùn)氣會(huì)來(lái)找我們。
滿分作文 等待面試 Waiting for an Interview
The words "part-time job" always bring back to me the memory of my first interview for a part-time job.
That afternoon a great number of nervous and excited young interviewees were waiting for their turns in the hall. Some were walking back and forth, others talking about their nerves. I had many butterflies in my stomach. I tried to predict the interviewers' questions and how I should give my answers. Though I had made full preparation for the interview, I still had some fears, for it was my first interview.
At last, it was my turn. I got up and walked quickly towards the door. I felt my face red and my heart beat fast. Suddenly a voice said in my mind,"Calm down! Calm down! Try your best and you will pass. "Encouraged by these words, I got my confidence and began my interview smoothly.
“兼職”這個(gè)字眼總會(huì)令我想起我的第一次面試。
那天下午，禮堂里聚滿了緊張又興奮的年輕應(yīng)試者。他們中的一些人來(lái)回走動(dòng)，另一些談?wù)撍麄兊木o張心情，我內(nèi)心也是七上八下。我試圖猜測(cè)考官會(huì)問(wèn)些什么問(wèn)題，我又如何回答。雖然已做了充分的準(zhǔn)備，可我仍舊緊張，因?yàn)檫@是我的第一次面試。
最后，輪到我了，我起身迅速向門口走去。我感到臉紅了，心跳也加快了。突然我聽到一個(gè)聲音仿佛在說(shuō)：“鎮(zhèn)靜，鎮(zhèn)靜!只要盡力，你就會(huì)成功。”聽了這些話，我找回了自信，順利地開始面試。
Last summer vacation I had my first interview in my life in order to get a part-time job.
That afternoon I stood in the hall with a great number of young interviewees. We were waiting for our turns to be interviewed. All of us were nervous and excited. Some were walking back and forth, others talking about their nerves. I had many butterflies in my stomach. I tried to predict the interviewers' questions and how I should give my answers. Though I had made full preparation for the interview, I still had some fears, for it was my first interview.
At last, it was my turn. I got up and walked quickly towards the door. My heart beating fast, I entered the room. At the moment I met with the smiling eyes of the interviewer, I gained my confidence and began my interview smoothly.
去年暑假，為了得到一份兼職工作，我進(jìn)行平生第一次面試。
那天下午我和許多年輕的應(yīng)試者一起站在大廳里，等著面試。我們都既緊張又興奮。一些人在來(lái)回走動(dòng)，另一些在談?wù)撍麄兊木o張心情，我內(nèi)心也是七上八下。我試圖猜測(cè)考官會(huì)問(wèn)些什么問(wèn)題，我如何回答。雖然我已做了充分的準(zhǔn)備，可仍舊緊張，因?yàn)檫@是我的第一次面試。
最后輪到我了。我站起來(lái)，迅速向門口走去。進(jìn)入房間時(shí)，我的心跳在加快。就在那時(shí)，我看見了考官那雙充滿笑意的眼睛，我找回了自信，順利地開始了面試。
Practicality and Pragmatism 實(shí)踐性與實(shí)用主義
Practicality and pragmatism, which all poweres and talents must serve, have now become the mainstream ideology, the great idol that we adore and admire, even a way of life.The majority of us hold fast to such an idea that anything that is not obviously practical has little, if any value in today's world.Although such a claim is not without merits, it is my belief that what in many's eyes is not practical is as a matter of fact should be attached great significance to. This is not to deny that the world is ever thriveing and progressing with practicality.Science and technology in modern era primarily serve this purpose.For instance, when it comes to scientific research, it is the most urgent and heatedly debated issues, say the vaccine of AIDS or the therapy for cancer, that get the most financial support or fundings from government or any concerned organization.Whereas the theoretical researches more often than not suffer from a dearth of fundings. In the realm of education,students always prefer majors or courses that promise them ideal careers in the job market,Hence,classes like economics,biotechnology,law are under most circumstances full of people while seats in the classrooms for history,philosophy,literature are seldom,if ever fully occupied. We should see clearly in what aspects praticality benefits us given the impact on our daily lives every technological breakthrough brings us.Nevertheless,contrary to many's belief,what is not obviously practical does not automatically turn out to be of little value.Take our current attitude towards liberal arts for example.None of us take it very seriouly in this practical world.Obviouly,The appreciation of a oil painting in the middle ages has nothing to do one's promotion in careers,nor it has anything to do with the sales of a kind of software. Yet as it is so often pointed out that our next generation,even ourselves are suffering from a rape of creativity and imagination.We are good at memorizing facts and figures,and we master the practical skill of reasoning, logical thinking as well as calculating,but we accquire an disability to creat and imagine at the same time.Common sense and experiences tell us that the best and most effective way to develop and enhance our creativity and imagination is to be exposed to any great art works,literature that appears impractical and futile in today's world.Thus,it may be high time that we stopped and reflect seriously on how the problems must be solved. And to this I want to add, such refinements and cultivation of human minds and manifestion of goodness of humantiy shall at no time be interperted as unpractical and thusly of little value even in today's practical world. To be fair, the seemly unpracticals are not totally exclusive of the practicals, that is these is hope for us to expect the combination of the two in each and every field .For example, we can and should devise a curriculum that both emphsizing practicality and the less practical but useful for us.Students are encouraged and guided to choose those fit their career goals and those cultivate the minds. To sum up,that practicality and pragmatism indeed do us good is undeniable given the comfort and convenience it brings into contemporary lives.Yet practicality and pragmatism to excess may run the risk of driving people to pursue short-term interests,overlooking long-term ones.Give these,we shold refrain from being overwhelmed by the detrimental effects of practicility and pragmatism .
實(shí)用性和實(shí)用主義，它所有的力量和人才必須服務(wù)，現(xiàn)在已經(jīng)成為主流意識(shí)形態(tài)，的大偶像，我們崇拜和敬仰，甚至是一種生活方式。大多數(shù)人持有快這樣的觀念，任何沒有明顯實(shí)用性的東西有點(diǎn)，如果任何價(jià)值在今天的世界。雖然這樣的說(shuō)法是不是沒有優(yōu)點(diǎn)，它是我的信仰，什么在許多的眼睛是不實(shí)際的，是作為一個(gè)事實(shí)上應(yīng)高度重視。這是不否認(rèn)，世界永遠(yuǎn)是thriveing和進(jìn)步在現(xiàn)代科學(xué)和技術(shù)的實(shí)用性。主要服務(wù)于這個(gè)目的。例如，當(dāng)它涉及到科學(xué)研究，它是的最緊迫、熱烈爭(zhēng)論的問(wèn)題，說(shuō)艾滋病或治療癌癥，得到的金融支持或公積金從政府或任何有關(guān)機(jī)構(gòu)的疫苗。而理論研究往往比不遭受缺乏公積金。在教育領(lǐng)域，學(xué)生總是喜歡專業(yè)或課程，承諾他們的理想職業(yè)的就業(yè)市場(chǎng)，因此，類如經(jīng)濟(jì)學(xué)，生物技術(shù)，法律在大多數(shù)情況下，全人，坐在教室的歷史，哲學(xué)，文學(xué)很少，如果不能完全占領(lǐng)。我們應(yīng)該清楚的看到在哪些方面praticality好處給我們?cè)谖覀兊娜粘Ｉ钪兴械募夹g(shù)突破都給我們帶來(lái)的沖擊。然而，相反很多的信仰，什么是不明顯的現(xiàn)實(shí)不自動(dòng)轉(zhuǎn)出來(lái)是價(jià)值不大。以我們目前的態(tài)度對(duì)文科的例子。沒有人把它非常嚴(yán)重在這個(gè)現(xiàn)實(shí)的世界。obviouly，欣賞一幅油畫，在中世紀(jì)有什么做的職位的升遷，或它有什么做與銷售的一種軟件。然而，它是如此經(jīng)常地指出，我們的下一代，甚至我們自己遭受的創(chuàng)造力和想象力。我們是好記憶事實(shí)和數(shù)字，我們掌握的實(shí)際技能的推理，邏輯思維以及計(jì)算，但我們獲得殘廢的創(chuàng)造和想象在同一時(shí)間。常見的感覺和經(jīng)驗(yàn)告訴我們，最好的和最有效的方式開發(fā)，提高我們的創(chuàng)造力和想象力是暴露在任何偉大的藝術(shù)作品，文學(xué)出現(xiàn)不切實(shí)際和徒勞的在今天的世界。因此，它可能是高的時(shí)候，我們停下來(lái)認(rèn)真思考如何必須解決的問(wèn)題。和這個(gè)，我想補(bǔ)充，這種細(xì)化和培養(yǎng)人類心靈manifestion善良的人性化建筑應(yīng)當(dāng)在任何時(shí)候被interperted作為不切實(shí)際和外敵的價(jià)值不大，即使在今天的`現(xiàn)實(shí)世界。公平，看似unpracticals是不是完全排斥的實(shí)習(xí)，那就是這些是希望我們期望相結(jié)合的兩個(gè)在各個(gè)領(lǐng)域都。例如，我們可以和應(yīng)該制定課程，是emphsizing實(shí)用和不切合實(shí)際的，但有用的我們。學(xué)生鼓勵(lì)和引導(dǎo)選擇適合自己的職業(yè)目標(biāo)和培養(yǎng)的頭腦。綜上所述，實(shí)用性和實(shí)用主義確實(shí)我們好是不可否認(rèn)的舒適和便利的同時(shí)也帶來(lái)了當(dāng)代生活。然而實(shí)用性和實(shí)用主義過(guò)剩可能運(yùn)行風(fēng)險(xiǎn)驅(qū)使人們?nèi)プ非蠖唐诶妫鲆曢L(zhǎng)期的。給這些，我們shold避免被淹沒的實(shí)用和務(wù)實(shí)的不利影響。
大學(xué)文憑是否必要？Is a college degree necessary today?
大學(xué)文憑是否必要?Is a college degree necessary in today's world?
Because a 4-year college education requires a large commitment of time, effort, and money. Many high school graduates decide not to go to college. They enter the work force immediately, or decide to go to a vocational or trade school instead of college. Is a college degree really necessary these days? Despite the expense and delay in entering the work force, I strongly believe that a 4-year college education is necessary and desirable in today's world.
One major reason to go to college is that college provides necessary academic background for a career. During four or more years in college, students have time and resources to explore many different areas in the humanities人文學(xué)科, social sciences, science, and professional fields such as business and engineering, and to take a variety of academic courses that will provide important background for particular careers.
A second important argument for the value of college is that people with college degrees have better job opportunities and higher income level than people who have only a high school or vocational school education, so college means a better quality of life. Job opportunities and starting salaries are generally excellent for people with college degrees while the employment outlook may not be so cheerful for those with only a high school diploma.
Also, college tends to provide a labor force with a certain knowledge and skill, which is beneficial to the advancement of our society. Students who exercise their minds and develop strategies to deal with hard problems over four years of college are likely to graduate with many skills and strategies that can be transferred to dealing with tasks later in life, both on the job and in their personal life. This will surely contribute to the progress of the world.
因?yàn)樗哪甑拇髮W(xué)教育需要大量的時(shí)間，精力，和金錢。許多高中畢業(yè)生決定不上大學(xué)。他們立即進(jìn)入工作隊(duì)，或者決定去一所職業(yè)學(xué)校或者是學(xué)校而不是大學(xué)。大學(xué)學(xué)位真的是必要的嗎？盡管在進(jìn)入勞動(dòng)力費(fèi)用和延誤，我堅(jiān)信，一個(gè)四年制大學(xué)教育是當(dāng)今世界的必要和可取的。
上大學(xué)的一個(gè)主要原因是，大學(xué)提供了必要的學(xué)術(shù)背景的職業(yè)生涯。在四年或更多的大學(xué)，學(xué)生有時(shí)間和資源來(lái)探索許多不同領(lǐng)域的人文人文學(xué)科，社會(huì)科學(xué)，科學(xué)，和專業(yè)的田野，如商業(yè)，工程，和采取各種學(xué)術(shù)課程，將提供特定職業(yè)的重要背景。
第二個(gè)重要論點(diǎn)大學(xué)價(jià)值的是，擁有大學(xué)學(xué)位的人有更好的就業(yè)機(jī)會(huì)和更高的收入水平比那些只有高中或職業(yè)學(xué)校教育，所以學(xué)院意味著更好的生活質(zhì)量。就業(yè)機(jī)會(huì)和開始的工資一般都是優(yōu)秀的，而對(duì)大學(xué)學(xué)位的人來(lái)說(shuō)，就業(yè)前景可能不那么樂觀，對(duì)于那些只有高中文憑。
同時(shí)，大學(xué)也會(huì)提供一種具有一定知識(shí)和技能的勞動(dòng)力，這對(duì)我們社會(huì)的進(jìn)步是有益的。學(xué)生誰(shuí)行使他們的頭腦和發(fā)展策略來(lái)處理困難的問(wèn)題，在四年的大學(xué)是可能畢業(yè)很多技巧和策略，可以轉(zhuǎn)移處理任務(wù)在以后的生活中，在工作和個(gè)人生活。這將有助于世界的進(jìn)步。
Work Pressure 工作壓力
專家提醒:寫好英語(yǔ)作文的關(guān)鍵是套用句型,背誦大量范文,達(dá)到熟悉這些地道的句子結(jié)構(gòu)!建議你背誦這篇英語(yǔ)作文Work Pressure范文，并提取其中的關(guān)鍵句型，活用到你的作文中去，就可以獲得高分！
Work Pressure
Work pressure refers to the compelling force or influence that comes from one's work. Nowadays with the competition in the work field becoming more and more fierce (激烈), work pressure has become a serious problem for every person. It has held a growing attention.
Its negative effects can be seen from the two aspects. In the physical aspect, it does much harm to people's physical health. Put under the constant pressure to keep their competitive edge, people work harder. They may catch some diseases under exhausting conditions. In the psychological aspect, it can lead to some psychological disorders. Work pressure is closely relevant to worries about setback, failure, shrinking (裁員). If the pressure is too great or lasts too long, people might collapse under it.
Since work pressure can affect people in such a serious wayn how can we tackle it B People could relax or refresh themselves on weekends or on holidays. Optimism, confidence, efficiency, regular exercise are also remedies. Certainly people could not avoid it, but they could try to reduce its side effects and not to be burdened by it.
范文分析 作者思路清晰。第一段以定義、原因、現(xiàn)象為三條線展開思路。第二段以上作壓力帶來(lái)的兩大難題(身體健康問(wèn)題與心理健康問(wèn)題)為著眼點(diǎn)拓展思路，深入淺出地詳細(xì)闡述了工作壓力帶來(lái)的身心隱患。第三段在“開處方”時(shí)，詳略得當(dāng)，不面面俱到。全文表達(dá)情緒飽滿，信息量大。
英語(yǔ)作文 篇3
27th, September of every year is World Tourism Day. Of course, it is to advocate people to travel often. Nowadays, as people’s living standard improve, the number and frequency of people to travel is also increasing. Why? I think it may because of the advantage of travel. First of all, travel can make people relaxed. In today’s competitive society, everyone is under great stress.
They may be crazy if they are in that situation in the long term. Going travel, leaving all the troubles behind for a period of time, people will have a good rest and then fight again. Secondly, travel can broaden people’s vision. People can learn more through what they see and hear. This knowledge is good for them. Last but not least, travel can enlarge people’s social circle, because they can make new friends on the way of their trip. In conclusion, travel has so many advantages. It is no wonder that there is a World Tourism Day to encourage everyone to go travel.
英語(yǔ)作文 篇4
Datong is one of the city famous for it’s history and culture and is located at the northern part of Shanxi Province. Datong is 380 km (236 miles) west of Beijing and 352 km (219 miles) north of Taiyuan, and is an important traffic junction with great strategic importance. Consisting of four districts and seven counties, Datong covers an area of 14,152 sq km (3,497,032 acres) and has a population of over 3 million. Mt. Hengshan, Mt. Cailiang, Mt. Mafu and many other mountains and hills surround Datong combines with more than 20 rivers running through the region make Datong City a wonderful place with beautiful natural scenery. There are also abundant mineral resource of which the coal mine is the most famous which gives Datong the title Capital of Coal. The area enjoys the continental monsoon climate, winter of Datong is extremely cold and dry, and spring and fall are cool but the temperature varies sharply between day and night. The average annual temperature is 5.5 oC (41.9 oF), and the hottest temperature is 37.7 oC (99.86 oF) while the lowest -29.1 oC(-20.38 oF). During the summer Datong is a natural tourist resort because the average temperature is only 19~21 oC (66.2~69.8 oF). The best time to visit Datong is during July and August.
英語(yǔ)作文 篇5
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, that's what's supposed to happen. As the planet warms, the warmer ice-free season is getting longer and longer. So what's 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.
"We've 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 we've 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 Manitoba's 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 that's going to help supplement against longer ice-free seasons, that really doesn't 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; they're 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 that's going to provide them with that type of fat are marine mammals. And they can only access those marine mammals when there's sea ice."
Adult males can go eight months without food. But younger, sub-adult bears, which are no longer nursing and must hunt, can't last as long without sea ice. So as the Arctic warms, younger polar bears will disproportionately die out. Leaving the species' survival in doubt.
北冰洋在秋季結(jié)冰以后，北極熊就會(huì)出發(fā)去尋求它們最喜歡的食物：富含脂肪的海豹和胡子海豹。海冰在夏季開始融化斷裂。這使北極熊在夏季無(wú)法吃到美味的海豹，所以它們進(jìn)入禁食期。至少，情況應(yīng)該是這樣。但是由于地球變暖，溫暖的無(wú)冰季節(jié)越來(lái)越長(zhǎng)。那饑餓的北極熊要怎么辦?
科學(xué)家曾經(jīng)認(rèn)為，北極熊可能會(huì)轉(zhuǎn)向陸地上的食物來(lái)補(bǔ)充它們對(duì)鰭足類動(dòng)物飲食的需求，進(jìn)而生存下去，這些陸地食物包括雪雁、雪雁蛋和北美馴鹿。
“文獻(xiàn)中有過(guò)這類辯論，即在寒冷融化時(shí)陸地食物是否能滿足北極熊的營(yíng)養(yǎng)需求。”
尼克·皮爾福德是加拿大阿爾伯塔大學(xué)的生物學(xué)家。
“通過(guò)上世紀(jì)70年代初的研究，還有早期的探險(xiǎn)者日志，我們很早以前就知道，北極熊會(huì)以陸地食物為食。但是辯論的焦點(diǎn)在于，這些食物是否能增加北極熊的能量。”換句話說(shuō)，這些替代食物能否為北極熊提供足夠的營(yíng)養(yǎng)，彌補(bǔ)不能進(jìn)食海豹帶來(lái)的損失?
為了解開這個(gè)疑惑，皮爾福德及同事對(duì)西哈德遜灣荒野地區(qū)的北極熊在無(wú)冰季期間每天失掉的體重進(jìn)行了估算，從表面上看，北極熊在這段時(shí)間食用了陸地食物。隨后，他們將這一數(shù)據(jù)與通過(guò)馬尼托巴北極熊預(yù)警計(jì)劃暫時(shí)捕得的北極熊所失掉的體重進(jìn)行了對(duì)比。
在被關(guān)期間，北極熊不吃東西。它們的體重每天大約下降1公斤。雖然野生北極熊能享用北極“小吃”，但是它們的體重每天也同樣會(huì)下降1公斤。這一研究結(jié)果發(fā)表在《生理學(xué)和生化動(dòng)物學(xué)》期刊上。
“顯然結(jié)果表明，陸地食物不能為北極熊提供足以抵消大量損失的能量。所以，北極熊可以從食用海冰下面的食物轉(zhuǎn)向食用陸地食物，并幫助它們對(duì)抗日益延長(zhǎng)的無(wú)冰季這個(gè)觀點(diǎn)，并沒有在這項(xiàng)數(shù)據(jù)中得到證明。”
問(wèn)題是，北極熊進(jìn)化成了依靠海洋食物的動(dòng)物。
“陸地食物以蛋白質(zhì)和碳水化合物為基礎(chǔ)，而北極熊需要的'食物以脂肪為主。脂肪是這些熊真正需要的東西;它們高度適應(yīng)的情況是，將脂肪吸收進(jìn)它們的系統(tǒng)中，然后把這些脂肪放在身上以增加體重，這樣它們之后就可以依靠這些脂肪來(lái)度過(guò)禁食期。唯一能提供給北極熊這種脂肪的就是海洋哺乳動(dòng)物。但是它們只能在有海冰時(shí)食用到這些海洋哺乳動(dòng)物。”
成年北極熊可以8個(gè)月不進(jìn)食。但是小一些的未成年北極熊已經(jīng)不再被哺育，它們必須要去獵食，可是它們不能在漫長(zhǎng)的無(wú)冰季期間一直不進(jìn)食。所以，隨著北極地區(qū)變暖，較小的北極熊將會(huì)大批死亡。這使這些物種的生存成為問(wèn)題。
英語(yǔ)作文 篇6
The Festival Diary
Today ,we went to buy fireworks with sister and brother . We bought all kinds of fireworks . Then we came to play outside. I lighted the fireworks and they flew into the sky like a rocket . The fe so beautiful and they looked like many kinds of flowers . At last , we sang and danced together. We felt very happy today .
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