GRE阅读扣分太多怎么办

11月开始进入GRE考试高峰期的后半程，留给考生的时间也越来越少了。小编相信许多同学其实已经搞定了留学申请各个环节文书资料的准备工作，现在就差一个拿得出手的GRE成绩了。那么如何才能拿到这个高分好成绩呢?自然是考前赶紧刷一波最新GRE机经!本文为大家带来最新11月19日GRE考试精准预测机经。参加11月19日GRE考试的同学们不容错过!<
每个人的情况不同，也可以登录文都国际教育官网进行一对一的咨询。
短篇阅读
Ragwort
was accidentally introduced to New Zealand in the late nineteenth
century and, like so many invading foreign species, quickly became a
pest. By the 1920s, the weed was rampant. What made matters worse was
that its proliferation coincided with sweeping changes in agriculture
and a massive shift from sheep farming to dairying.
Ragwort
contains a battery of toxic and resilient alkaloids: even honey made
from its flowers contains the poison in dilute form. Livestock generally
avoid grazing where ragwort is growing, but they will do so once it
displaces grass and clover in their pasture. Though sheep can eat it for
months before showing any signs of illness, if cattle eat it they
sicken quickly, and fatality can even result.
1. The passage suggests that the proliferation of ragwort was particularly ill-timed because it
A. coincided with and exacerbated a decline in agriculture
B. took place in conditions that enabled the ragwort to spread faster than it otherwise would have done
C. led to an increase in the amount of toxic compounds contained in the plants
D. prevented people from producing honey that could be eaten safely
E. had consequences for livestock that were more dramatic than they otherwise would have been
参考答案：E
第二句说ragwort的繁殖赶上了新西兰农业的变化——从养羊到养牛;而最后一句话又说这种草对牛的危害更大，so
the proliferation of ragwort was particularly
ill-timed。E选项：相比于其他方面，这种草对家畜的影响更为巨大
2. The passage implies which of the following about the problems ragwort poses to dairy farmers?
A. Milk produced by cows that eat ragwort causes illness in humans who drink it.
B. Ragwort can supplant the plants normally eaten by cattle.
C. Cattle, unlike sheep, are unable to differentiate between ragwort and healthy grazing.
参考答案：B
尽管A有可能正确，但是文章里没有任何Support。B由Livestock
generally avoid grazing where ragwort is growing, but they will do so
once it displaces grass and clover in their pasture.支持，C完全超出文章之外。
长篇阅读
What
causes a helix in nature to appear with either a dextral (right-handed,
or clockwise) twist or a sinistral (left-handed, or counterclockwise)
twist is one of the most intriguing puzzles in the science of form. Most
spiral-shaped snail species are predominantly dextral. But at one time,
handedness (twist direction of the shell) was equally distributed
within some snail species that have become predominantly dextral or, in a
few species, predominantly sinistral. What mechanisms control
handedness and keep left-handedness rare?
It
would seem unlikely that evolution should discriminate against
sinistral snails if sinistral and dextral snails are exact mirror
images, for any disadvantage that a sinistral twist in itself could
confer on its possessor is almost inconceivable. But left- and
right-handed snails are not actually true mirror images of one another.
Their shapes are noticeably different. Sinistral rarity might, then, be a
consequence of possible disadvantages conferred by these other
concomitant structural features. In addition, perhaps left- and
right-handed snails cannot mate with each other, having incompatible
twist directions. Presumably an individual of the rarer form would have
relative difficulty in finding a mate of the same hand, thus keeping the
rare form rare or creating geographically separated right- and
left-handed populations.
But
this evolutionary mechanism combining dissymmetry, anatomy, and chance
does not provide an adequate explanation of why right-handedness should
have become predominant. It does not explain, for example, why the
infrequent unions between snails of opposing hands produce fewer
offspring of the rarer than the commoner form in species where each
parent contributes equally to handedness. Nor does it explain why, in a
species where one parent determines handedness, a brood is not
exclusively right- or left-handed when the offspring would have the same
genetic predisposition. In the European pond snail Lymnaea peregra, a
predominantly dextral species whose handedness is maternally determined,
a brood might be expected to be exclusively right- or left-handed—and
this often occurs. However, some broods possess a few snails of the
opposing hand, and in predominantly sinistral broods, the incidence of
dextrality is surprisingly high.
Here,
the evolutionary theory must defer to a theory based on an explicit
developmental mechanism that can favor either right- or left-handedness.
In the case of Lymnaea peregra, studies indicate that a dextral gene is
expressed during egg formation; i.e., before egg fertilization, the
gene produces a protein, found in the cytoplasm of the egg, that
controls the pattern of cell division and thus handedness. In
experiments, an injection of cytoplasm from dextral eggs changes the
pattern of sinistral eggs, but an injection from sinistral eggs does not
influence dextral eggs. One explanation for the differing effects is
that all Lymnaea peregra eggs begin left-handed but most switch to being
right-handed. Thus the path to a solution to the puzzle of handedness
in all snails appears to be as twisted as the helix itself.
1. The second paragraph of the passage is primarily concerned with offering possible reasons why
A. it is unlikely that evolutionary mechanisms could discriminate against sinistral snails
B. sinistrality is relatively uncommon among snail species
C. dextral and sinistral populations of a snail species tend to intermingle
D. a theory based on a developmental mechanism inadequately accounts for the predominance of dextrality across snail species
E. dextral snails breed more readily than sinistral snails, even within predominantly sinistral populations
参考答案：B
线索很明显在第二段.
A选项为误导选项,其与第二段的第一句很像,如果只看这句就做题可能会被误导。但题目问的是"offering possible reasons"
why, 这是第二段中间的 Sinistral rarity might....才明说. 此句说造成的sinistral
rarity这样的结果可能是也由下面concomitant structural features造成, 所以此句当然也就是那些possible
reasons要解释的。
2. It can be inferred from the passage
that a predominantly sinistral snail species might stay predominantly
sinistral for each of the following reasons EXCEPT for
A. a developmental mechanism that affects the cell-division pattern of snails
B. structural features that advantage dextral snails of the species
C. a relatively small number of snails of the same hand for dextral snails of the species to mate with
D. anatomical incompatibility that prevents mating between snails of opposing hands within the species
E. geographic separation of sinistral and dextral populations
参考答案：B
A选项的理由可在最后一段找到;
B,C,D,E选项的线索都在第二段,但B选项是advantage 'dextral' snails 而不是sinistral snails.
B中的structure feature在文中是用来解释右旋比左旋更有优势。而题目问的是,左旋物种一直保持左旋的原因。即,structure
feature可以解释左旋比右旋少,但是不能解释为何左旋物种一直保持左旋，所以选B。
逻辑阅读
The
painter Peter Brandon never dated his works, and their chronology is
only now beginning to take shape in the critical literature. A recent
dating of a Brandon self-portrait to 1930 is surely wrong. Brandon was
63 years old in 1930, yet the painting shows a young, dark-haired
man—obviously Brandon, but clearly not a man of 63.
Which of the following, if justifiably assumed, allows the conclusion to be properly drawn?
A. There is no securely dated self-portrait of Brandon that he painted when he was significantly younger than 63.
B.
In refraining from dating his works, Brandon intended to steer critical
discussion of them away from considerations of chronology.
C. Until recently, there was very little critical literature on the works of Brandon.
D. Brandon at age 63 would not have portrayed himself in a painting as he had looked when he was a young man.
E. Brandon painted several self-portraits that showed him as a man past the age of 60.
参考答案：D
文中依据： 1. Brandon在1930年已经63岁了。 2. 画像是Brandon年轻时的样子。结论：Brandon的自画像不是1930年画的。所以，只有假设“Brandon63岁时不会画自己年轻时的样子”成立，才能推出结论。所以正确选项D。