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2005/6/28
还没有看OG的阅读，打算先把toefl文章95后真题全部扫除
今天遇到第一篇真正完全看不懂的文章96年1月北美第5篇
Plants are subject to attack and infection by a remarkable variety of symbiotic species and have evolved a diverse array of mechanisms designed to frustrate the
potential colonists（第一句就很迷惑，为什么出现了colonists，单词基本上都懂了，可人晕了）. These can be divided into preformed or passive defense mechanisms
Line and inducible or active systems. Passive plant defense comprises physical and chemical
(5) barriers that prevent entry of pathogens, such as bacteria, or render tissues unpalatable
or toxic to the invader. The external surfaces of plants, in addition to being covered by
an epidermis and a waxy cuticle, often carry spiky hairs known as trichomes, which
either prevent feeding by insects or may even puncture and kill insect larvae. Other trichomes are sticky and glandular and effectively trap and immobilize insects.
(10) If the physical barriers of the plant are breached, then preformed chemicals may
inhibit or kill the intruder, and plant tissues contain a diverse array of toxic or
potentially toxic substances, such as resins, tannins, glycosides, and alkaloids, many of which are highly effective deterrents to insects that feed on plants. The success of the
Colorado beetle in infesting potatoes, for example, seems to be correlated with its high
(15) tolerance to alkaloids that normally repel potential pests. Other possible chemical
defenses, while not directly toxic to the parasite, may inhibit some essential step in the
establishment of a parasitic relationship. For example, glycoproteins in plant cell walls
may inactivate enzymes that degrade cell walls. These enzymes are often produced by
bacteria and fungi.
(20) Active plant defense mechanisms are comparable to the immune system of
vertebrate animals, although the cellular and molecular bases are fundamentally
different. Both, however, are triggered in reaction to intrusion, implying that the host
has some means of recognizing the presence of a foreign organism. The most dramatic
example of an inducible plant defense reaction is the hypersensitive response. In the
(25) hypersensitive response, cells undergo rapid necrosis—that is, they become diseased
and die—after being penetrated by a parasite; the parasite itself subsequently ceases to
grow and is therefore restricted to one or a few cells around the entry site. Several
theories have been put forward to explain the basis of hypersensitive resistance.
生词汇报：symbiotic， inducible ，pathogens， render tissues， unpalatable， epidermis cuticle，trichomes puncture glandular ，resins, tannins, glycosides, alkaloids,deterrents，parasitic，glycoproteins ，enzymes，triggered，necrosis，penetrated 。
短短20几行，出现了那么多的生词，如果toefl的考试遇到这种文章，还有希望吗？
其实除了这些词，这篇文章里其他的词我还是基本上认识，可一遇到这些词夹杂在其中，就开始发慌，越开越慌，连本来认识的一些词，都对自己的理解没自信了。结果晕乎乎的整篇读下来，脑子里就什么都没有了。再加上这是toefl的最后一篇，在时间紧凑的情况，发慌的可能性就更大了。请各位高人指点我如何摆脱这种心态。和如何对付这些考试中出现的非常生物学的专业词汇。
还有，第一句话，我大部分词都认识，怎么一读下来，就一头雾水了呢。记得大学时，老师曾经说过，英文的文章第一句话最重要，没有完全理解，我后面就开始发慌，这个怎么办呢？
如果读不懂，还有可能把题目的正确率保持在很高的水准吗？请教tony等前辈的回复。
[此贴子已经被作者于2005-6-28 19:36:28编辑过] | 
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发表于 2005-6-28 19:25:00
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