GRE阅读高分考生分享备考实用提升诀窍.doc
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1、GRE阅读高分考生分享备考实用提升诀窍GRE阅读高分考生分享备考实用提升诀窍 ,我们一起来学习一下吧,下面小编就和大家分享,来欣赏一下吧。GRE阅读高分考生分享备考实用提升诀窍GRE阅读练习要控制时间平时练习GRE阅读,就要从控制时间开始,这样才能更好的适应考试节奏。具体来说,阅读复习掐时间读一篇文章,长文章1.52分钟,短文章11.5分钟,然后以平均每题1分钟的速度解完后面的题。注意是“平均”,即你只要控制在比如7题在7分钟内作完即可。GRE阅读练习要学会时时总结不少人喜欢拿到练习备考材料就埋头苦练,对于自己做错的题目缺很少总结,最后就会出现同类题目一错再错的低效率重复劳动。学会时时总结,对
2、自己做错的每道题目都分析错误原因,了解为什么会错,错在哪里。才能有效提高做题效率,提升阅读水平。GRE阅读练习要精度重点文章GRE阅读复习的时候,对于有些真题类或比较有代表性的题目文章最好不计时间地仔细研究一遍,主要研究层次结构,起承转合,语言套路及选项特征等内容,对该类型的文章心中有数,之后碰到同类文章就能快速找出答题点迅速解决难题。GRE阅读练习学会分析题目和解题思路做完每道题,不论作对或作错,想一下此题的解题思路是什么,是否具有多种解题方案,自己距离某种解题方案还有什么缺陷或不足,什么样的方法最适合自己,最短的解题思路又是什么。对于每道题的五个选项都找出对或错的理由来,一定要是让自己信服
3、的理由。可能有人达到一定高度觉得没必要,太费时,但是有些看来现在很友好的错误项只要稍加变动就会面目全非。所以一定要仔细看过,找到它的弱点和难点才行。以上就是一些GRE阅读快速提高的方法和技巧,大家在平时做题时可以善加利用,提高自己的备考效率,早日攻克GRE阅读难关。GRE阅读练习每日一篇Classical physics defines the vacuum as a state of absence: a vacuum is said to exist in a region of space if there is nothing in it. In the quantum field t
4、heories that describe the physics of elementary particles, the vacuum becomes somewhat more complicated. Even in empty space, particles can appear spontaneously as a result of fluctuations of the vacuum. For example, an electron and a positron, or antielectron, can be created out of the void. Partic
5、les created in this way have only a fleeting existence; they are annihilated almost as soon as they appear, and their presence can never be detected directly. They are called virtual particles in order to distinguish them from real particles, whose lifetimes are not constrained in the same way, and
6、which can be detected. Thus it is still possible to define that vacuum as a space that has no real particles in it.One might expect that the vacuum would always be the state of lowest possible energy for a given region of space. If an area is initially empty and a real particle is put into it, the t
7、otal energy, it seems, should be raised by at least the energy equivalent of the mass of the added particle. A surprising result of some recent theoretical investigations is that this assumption is not invariably true. There are conditions under which the introduction of a real particle of finite ma
8、ss into an empty region of space can reduce the total energy. If the reduction in energy is great enough, an electron and a positron will be spontaneously created. Under these conditions the electron and positron are not a result of vacuum fluctuations but are real particles, which exist indefinitel
9、y and can be detected. In other words, under these conditions the vacuum is an unstable state and can decay into a state of lower energy; i.e., one in which real particles are created.The essential condition for the decay of the vacuum is the presence of an intense electric field. As a result of the
10、 decay of the vacuum, the space permeated by such a field can be said to acquire an electric charge, and it can be called a charged vacuum. The particles that materialize in the space make the charge manifest. An electric field of sufficient intensity to create a charged vacuum is likely to be found
11、 in only one place: in the immediate vicinity of a superheavy atomic nucleus, one with about twice as many protons as the heaviest natural nuclei known. A nucleus that large cannot be stable, but it might be possible to assemble one next to a vacuum for long enough to observe the decay of the vacuum
12、. Experiments attempting to achieve this are now under way (under way: adv.进行中, 在行进).17. Which of the following titles best describes the passage as a whole?(A) The Vacuum: Its Fluctuations and Decay(B) The Vacuum: Its Creation and Instability(C) The Vacuum: A State of Absence(D) Particles That Mate
13、rialize in the Vacuum(E) Classical Physics and the Vacuum18. According to the passage, the assumption that the introduction of a real particle into a vacuum raises the total energy of that region of space has been cast into doubt by which of the following?(A) Findings from laboratory experiments(B)
14、Findings from observational field experiments(C) Accidental observations made during other experiments(D) Discovery of several erroneous propositions in accepted theories(E) Predictions based on theoretical work19. It can be inferred from the passage that scientists are currently making efforts to o
15、bserve which of the following events?(A) The decay of a vacuum in the presence of virtual particles(B) The decay of a vacuum next to a superheavy atomic nucleus(C) The creation of a superheavy atomic nucleus next to an intense electric field(D) The creation of a virtual electron and a virtual positr
16、on as a result of fluctuations of a vacuum(E) The creation of a charged vacuum in which only real electrons can be created in the vacuums region of space20. Physicists recent investigations of the decay of the vacuum, as described in the passage, most closely resemble which of the following hypothet
17、ical events in other disciplines?(A) On the basis of data gathered in a carefully controlled laboratory experiment, a chemist predicts and then demonstrates the physical properties of a newly synthesized polymer.(B) On the basis of manipulations of macroeconomic theory, an economist predicts that, c
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