考研英语冲刺范文

时间：2017-05-06 17:59:44 玉莲928由分享

学习啦在线学习网　　我们从小学的时候起，似乎就已经学会套用写作模板来进行英语写作了，不一定限定在考研才那么做。下面是学习啦小编给大家整理的考研英语冲刺范文，供大家参阅!

　　考研英语冲刺范文：Sleep

学习啦在线学习网　　Sleet is part of a person's daily activity cycle. There are several different stages of sleep, and they too occur in cycles. If you are an average sleeper, your sleep cycle is as follows. When you fist drift off into slumber, your eyes will roll about a bit, you temperature will drop slightly, your muscles will relax, and your breathing well slow and become quite regular. Your brain waves slow and become quite regular. Your brain waves slow down a bit too, with the alpha rhythm of rather fast waves 1 sleep. For the next half hour or so, as you relax more and more, you will drift down through stage 2 and stage 3 sleep. The lower your stage of sleep. slower your brain waves will be. Then about 40to 69 minutes after you lose consciousness you will have reached the deepest sleep of all. Your brain will show the large slow waves that are known as the delta rhythm. This is stage 4 sleep.

学习啦在线学习网　　You do not remain at this deep fourth stage all night long, but instead about 80 minutes after you fall into slumber, your brain activity level will increase again slightly. The delta rhythm will disappear, to be replaced by the activity pattern of brain waves. Your eyes will begin to dart around under your closed eyelids as if you were looking at something occurring in front of you. This period of rapid eye movement lasts for some 8 to 15 minutes and is called REM sleep. It is during REM sleep period, your body will soon relax again, your breathing will slip gently back from stage 1 to stage 4 sleep----only to rise once again to the surface of near consciousness some 80 minutes later.

　　考研英语冲刺范文：Bacteria

　　Bacteria are extremely small living things. While we measure our own sizes in inches or centimeters, bacterial size is measured in microns. One micron is a thousandth of a millimeter: a pinhead is about a millimeter across. Rod-shaped bacteria are usually from two to four microns long, while rounded ones are generally one micron in diameter. Thus if you enlarged a rounded bacterium a thousand times, it would be just about the size of a pinhead. An adult human magnified by the same amount would be over a mile(1.6 kilometer) tall.

　　Even with an ordinary microscope, you must look closely to see bacteria. Using a magnification of 100 times, one finds that bacteria are barely visible as tiny rods or dots. One cannot make out anything of their structure. Using special stains, one can see that some bacteria have attached to them wavy-looking "hairs" called flagella. Others have only one flagellum. The flagella rotate, pushing the bacteria through the water. Many bacteria lack flagella and cannot move about by their own power, while others can glide along over surfaces by some little-understood mechanism.

学习啦在线学习网　　From the bacteria point of view, the world is a very different place from what it is to humans. To a bacterium water is as thick as molasses is to us. Bacteria are so small that they are influenced by the movements of the chemical molecules around them. Bacteria under the microscope, even those with no flagella, often bounce about in the water. This is because they collide with the watery molecules and are pushed this way and that. Molecules move so rapidly that within a tenth of a second the molecules around a bacteria have all been replaced by new ones; even bacteria without flagella are thus constantly exposed to a changing environment.

　　考研英语冲刺范文：Two Attitudes Toward Part-time Jobs

　　Some peolpe think there are more advantages for colleges students to take part-time jobs than disadvantages, others don't think so. What's your view on this? And tell why.

学习啦在线学习网　　A serious problem has arisen in recent several years that more and more college students abandon study because of their taking part-time jobs, so quite a few people are opposed to part-time jobs. However, taking part-time jobs has at least three benefits for college studens in my eyes.

　　First, students can promote their study through part-time jobs. For instance, If a law student finds a part-time job in a law firm, his practice will enable him to better understand what he's learned from books. What's more, the part-time job can offer him opportunities to go beyond what he's been taught in class, and he'll learn something that doesn't exist in books but in practice.

　　Second, students can also accumulate work experiences through part-time jobs, which will benefit their future job-hunting. Actually, part-time jobs act as warm-up exercises for students to take full-time jobs after they graduate, and help them prepare for their future careers. In addition, as fresh blood in the society, graduated students are often unfavored in job-hunting markets for lack of practical work experiences. It's easier to find jobs for those who have accumulated experiences in part-time jobs.

　　Last but not the least, part-time jobs can partly relieve students' financial burden, especially those who are from poor families. College tution fees have greatly increased in the past ten years due to the new educational policy. Many students from poor families cannot afford college fees, and our bank system fail to loan college students as effectively as it does in developed countries, so taking part-time jobs becomes a way for them to meet their great expenses in campus lives.

　　It's an undenied fact that students break the balance between their jobs and studies, especially when they fall into conflict with each other. But I think students should spend their spare time taking part-time jobs. Only following this principle can they benefit from their part-time jobs.

　　考研英语冲刺范文：Cells and Temperature

学习啦在线学习网　　Cells cannot remain alive outside certain limits of temperature and much narrower limits mark the boundaries of effective functioning. Enzyme systems of mammals and birds are most efficient only within a narrow range around 37C;a departure of a few degrees from this value seriously impairs their functioning. Even though cells can survive wider fluctuations the integrated actions of bodily systems are impaired. Other animals have a wider tolerance for changes of bodily temperature.

　　For centuries it has been recognized that mammals and birds differ from other animals in the way they regulate body temperature. Ways of characterizing the difference have become more accurate and meaningful over time, but popular terminology still reflects the old division into "warm-blooded" and "cold-blooded" species; warm-blooded included mammals and birds whereas all other creatures were considered cold-blooded. As more species were studied, it became evident that this classification was inadequate. A fence lizard or a desert iguana-each cold-blooded----usually has a body temperature only a degree or two below that of humans and so is not cold. Therefore the next distinction was made between animals that maintain a constant body temperature, called home0therms, and those whose body temperature varies with their environments, called poikilotherms. But this classification also proved inadequate, because among mammals there are many that vary their body temperatures during hibernation. Furthermore, many invertebrates that live in the depths of the ocean never experience change in the depths of the ocean never experience change in the chill of the deep water, and their body temperatures remain constant.

　　考研英语冲刺范文：一生的事业

学习啦在线学习网　　As food is to the body, so is learning to the mind. Our bodies grow and muscles develop with the intake of adequate nutritious food. Likewise, we should keep learning day by day to maintain our keen mental power and expand our intellectual capacity. Constant learning supplies us with inexhaustible fuel for driving us to sharpen our power of reasoning, analysis, and judgment. Learning incessantly is the surest way to keep pace with the times in the information age, and an infallible warrant of success in times of uncertainty.

　　Once learning stops, vegetation sets in. It is a common fallacy to regard school as the only workshop for the acquisition of knowledge. On the contrary, learning should be a never-ending process, from the cradle to the grave. With the world ever changing so fast, the cease from learning for just a few days will make a person lag behind. What's worse, the animalistic instinct dormant deep in our subconsciousness will come to life, weakening our will to pursue our noble ideal, sapping our determination to sweep away obstacles to our success and strangling our desire for the refinement of our character. Lack of learning will inevitably lead to the stagnation of the mind, or even worse, its fossilization, Therefore, to stay mentally young, we have to take learning as a lifelong career.

学习啦在线学习网　　学习之于心灵，就像食物之于身体一样。摄取了适量的营养食物，我们的身体得以生长而肌肉得以发达。同样地，我们应该日复一日不断地学习以保持我们敏锐的心智能力，并扩充我们的智力容量。不断的学习提供我们用不尽的燃料，来驱使我们磨利我们的推理、分析和判断的能力。持续的学习是在信息时代中跟时代并驾齐驱的最稳当的方法，也是在变动的世代中成功的可靠保证。

　　一旦学习停止，单调贫乏的生活就开始了。视学校为汲取知识的唯一场所是种常见的谬误。相反地，学习应该是一种无终止的历程，从生到死。由于世界一直快速地在变动，只要学习停顿数日就将使人落后。更糟的是，蛰伏在我们潜意识深处的兽性本能就会复活，削弱我们追求高贵理想的意志，弱化我们扫除成功障碍的决心，而且扼杀我们净化我们人格的欲望。缺少学习将不可避免地导致心灵的停滞，甚至更糟地，使其僵化。因此，为了保持心理年轻，我们必须将学习当作一生的事业。

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