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[备考日记] 有木有潜伏在G版的托福党啊,寻找托福口语小伙伴啊!! [复制链接]

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寄托与我 GRE梦想之帆 GRE守护之星 2015 US-applicant 荣誉版主

发表于 2015-5-22 19:17:45 |显示全部楼层
本帖最后由 无敌浩克One 于 2015-5-22 19:22 编辑
wfxmfwjw 发表于 2015-5-22 11:47
第一遍老g阅读快刷完了,但正确率基本平均到70%。有的错的多有的错的少。时间也没有变快多少。看来要刷第 ...


同,时间是硬伤好伤心!!!
分享一篇经验:https://bbs.gter.net/thread-1622760-1-1.html
深深地跪了,又想自残了
努力努力再努力!!
明天一定要发疯了一样的学习!!一周就只有周六才有一整天的时间,之前每次都荒废了

@far2go @yukie小丑猪
能收到我的@吗?

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寄托兑换店纪念章 美版2016offer达人 2016 US-applicant

发表于 2015-5-22 20:49:15 |显示全部楼层
无敌浩克One 发表于 2015-5-22 19:17
同,时间是硬伤好伤心!!!
分享一篇经验:https://bbs.gter.net/thread-1622760-1-1.html
深深地跪了 ...

@ 没有显示额。。 我是自己跑进来看的。

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发表于 2015-5-22 23:02:14 |显示全部楼层
无敌浩克One 发表于 2015-5-22 19:17
同,时间是硬伤好伤心!!!
分享一篇经验:https://bbs.gter.net/thread-1622760-1-1.html
深深地跪了 ...

这些大神只能仰慕,我只能脚踏实地一步一步往上爬。说实话,心里是泪流满面的。

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CS offerl勋章 加拿大offer勋章

发表于 2015-5-23 00:04:14 |显示全部楼层
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单词1000

今天看了奔跑吧大兄弟,就当调剂生活了。明天和楼主一起努力努力再努力!
fire!!!

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发表于 2015-5-23 08:20:16 |显示全部楼层
最近按计划来感觉好多了,想请教楼主几个问题:

1. 你的老G阅读做的是NO题么,国内的题目要不要做?
2. 我想问一下Robin的五部阅读法是用Economist训练的吗?
3.数学用什么资料好呢?我看到有推荐LSAT

O(∩_∩)O

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寄托与我 GRE梦想之帆 GRE守护之星 2015 US-applicant 荣誉版主

发表于 2015-5-23 10:12:48 |显示全部楼层
iwishican 发表于 2015-5-22 23:02
这些大神只能仰慕,我只能脚踏实地一步一步往上爬。说实话,心里是泪流满面的。

泪流满心啊T_T共勉

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寄托与我 GRE梦想之帆 GRE守护之星 2015 US-applicant 荣誉版主

发表于 2015-5-23 10:13:11 |显示全部楼层
far2go 发表于 2015-5-22 20:49
@ 没有显示额。。 我是自己跑进来看的。

好啵,要是论坛能增加功能就好了!!

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寄托与我 GRE梦想之帆 GRE守护之星 2015 US-applicant 荣誉版主

发表于 2015-5-23 10:13:52 |显示全部楼层
wfxmfwjw 发表于 2015-5-23 00:04
522
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一大早起来,然后、、、就看了奔兄、、、唉、、、

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寄托与我 GRE梦想之帆 GRE守护之星 2015 US-applicant 荣誉版主

发表于 2015-5-23 10:14:42 |显示全部楼层
艾小卉 发表于 2015-5-23 08:20
最近按计划来感觉好多了,想请教楼主几个问题:

1. 你的老G阅读做的是NO题么,国内的题目要不要做?

1.我全都做了
2.什么文章都练
3.我数学没用什么资料,理科生

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寄托与我 GRE梦想之帆 GRE守护之星 2015 US-applicant 荣誉版主

发表于 2015-5-23 11:34:08 |显示全部楼层
本帖最后由 无敌浩克One 于 2015-5-23 11:51 编辑

2015.5.23 comprehension note!
second time reading

As Gilbert White, Darwin, and others observed long ago, all species appear to have the innate capacity to increase their numbers from generation to generation. The task for ecologists is to untangle the environmental and biological factors that hold this intrinsic capacity for population growth in check over the long run. The great variety of dynamic behaviors exhibited by different populations makes this task more difficult: some populations remain roughly constant from year to year; others exhibit regular cycles of abundance and scarcity; still others vary wildly, with outbreaks and crashes that are in some cases plainly correlated with the weather, and in other cases not.
To impose some order on this kaleidoscope of patterns, one school of thought proposes dividing populations into two groups. These ecologists posit that the relatively steady populations have “density-dependent” growth parameters; that is, rates of birth, death, and migration which depend strongly on population density. The highly varying populations have “density-independent” growth parameters, with vital rates buffeted by environmental events; these rates fluctuate in a way that is wholly independent of population density.
This dichotomy has its uses, but it can cause problems if taken too literally. For one thing, no population can be driven entirely by density-independent factors all the time. No matter how severely or unpredictably birth, death and migration rates may be fluctuating around their long-term averages, if there were no density-dependent effects, the population would, in the long run, either increase or decrease without bound (barring a miracle by which gains and losses canceled exactly). Put another way, it may be that on average 99 percent of all deaths in a population arise from density-independent causes, and only one percent from factors varying with density. The factors making up the one percent may seem unimportant, and their cause may be correspondingly hard to determine. Yet, whether recognized or not, they will usually determine the long-term average population density.
In order to understand the nature of the ecologist’s investigation, we may think of the density-dependent effects on growth parameters as the “signal” ecologists are trying to isolate and interpret, one that tends to make the population increase from relatively low values or decrease from relatively high ones, while the density-independent effects act to produce “noise” in the population dynamics. For populations that remain relatively constant, or that oscillate around repeated cycles, the signal can be fairly easily characterized and its effects described, even though the causative biological mechanism may remain unknown. For irregularly fluctuating populations, we are likely to have too few observations to have any hope of extracting the signal from the overwhelming noise. But it now seems clear that all populations are regulated by a mixture of density-dependent and density-independent effects in varying proportions.

17.        The author of the passage is primarily concerned with
(A) discussing two categories of factors that control population growth and assessing their relative importance
(B) describing how growth rates in natural populations fluctuate over time and explaining why these changes occur
describing how growth rates fluctuate only appears in the first paragraph, narrow the scope
(C) proposing a hypothesis concerning population sizes and suggesting ways to test it
(D) posing a fundamental question about environmental factors in population growth and presenting some currently accepted answers
(E) refuting a commonly accepted theory about population density and offering a new alternative

18.        It can be inferred from the passage that the author considers the dichotomy discussed in the second paragraph to be
(A) applicable only to erratically fluctuating populations
(B) useful, but only if its limitations are recognized
This dichotomy has its uses, but it can cause problems if taken too literally
(C) dangerously misleading in most circumstances
(D) a complete and sufficient way to account for observed phenomena
(E) conceptually valid, but too confusing to apply on a practical basis

19.        Which of the following statements can be inferred from the last paragraph?
(A) For irregularly fluctuating populations, doubling the number of observations made will probably result in the isolation of density-dependent effects.
not mentioned doubling
(B) Density-dependent effects on population dynamics do not occur as frequently as do density-independent effects.
not mentioned frequency, but number
(C) At present, ecologists do not understand any of the underlying causes of the density-dependent effects they observe in population dynamics.
(D) Density-dependent effects on growth parameters are thought to be caused by some sort of biochemical “signaling” that ecologists hope eventually to understand.
(E) It is sometimes possible to infer the existence of a density-dependent factor controlling population growth without understanding its causative mechanism.
the signal can be fairly easily characterized and its effects described, even though the causative biological mechanism may remain unknown.

20.        According to the passage, which of the following is a true statement about density-dependent factors in population growth?
(A) They ultimately account for long-term population levels.
they will usually determine the long-term average population density.
(B) They have little to do with long-term population dynamics.
(C) They are always more easily isolated and described than those that are density-independent.
(D) They include random environmental events.
(E) They contradict current ecological assumptions about population dynamics.

21.        According to the passage, all of the following behaviors have been exhibited by different populations EXCEPT:
(A) roughly constant population levels from year to year
(B) regular cycles of increases and decreases in numbers
(C) erratic increases in numbers correlated with the weather
(D) unchecked increases in numbers over many generations
relative sentence: No matter how severely or unpredictably birth, death and migration rates may be fluctuating around their long-term averages, if there were no density-dependent effects, the population would, in the long run, either increase or decrease without bound
(E) sudden declines in numbers from time to time

22.        The discussion concerning population in lines 24-40 serves primarily to
(A) demonstrate the difficulties ecologists face in studying density-dependent factors limiting population growth
not relative, it is the topic of the next paragraph
(B) advocate more rigorous study of density-dependent factors in population growth
not mentioned rigorous
(C) prove that the death rates of any population are never entirely density-independent
not only about death rates
(D) give an example of how death rates function to limit population densities in typical populations
narrow the scope
(E) underline the importance of even small density-dependent factors in regulating long-term population densities
they will usually determine the long-term average population density.

23.        In the passage, the author does all of the following EXCEPT:
(A) cite the views of other biologists
one school of thought proposes dividing populations into two groups.
(B) define a basic problem that the passage addresses
The great variety of dynamic behaviors exhibited by different populations makes this task more difficult
This dichotomy has its uses
(C) present conceptual categories used by other biologists
(D) describe the results of a particular study
(E) draw a conclusion
they will usually determine the long-term average population density.

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寄托与我 GRE梦想之帆 GRE守护之星 2015 US-applicant 荣誉版主

发表于 2015-5-23 13:06:20 |显示全部楼层
本帖最后由 无敌浩克One 于 2015-5-23 13:11 编辑

2015.5.23 comprehension note!

Researchers are finding that in many ways an individual bacterium is more analogous to a component cell of a multicellular organism than it is to a free-living, autonomous organism. Anabaena, a freshwater bacteria, is a case in point. Among photosynthetic bacteria, Anabaena is unusual: it is capable of both photosynthesis and nitrogen fixation. Within a single cell, these two biochemical processes are incompatible: oxygen produced during photosynthesis, inactivates the nitrogenase required for nitrogen fixation. In Anabaena communities, however, these processes can coexist. When fixed nitrogen compounds are abundant, Anabaena is strictly photosynthetic and its cells are all alike. When nitrogen levels are low, however, specialized cells called heterocysts are produced which lack chlorophyll (necessary for photosynthesis) but which can fix nitrogen by converting nitrogen gas into a usable form. Submicroscopic channels develop which connect the heterocyst cells with the photosynthetic ones and which are used for transferring cellular products between the two kinds of Anabaena cells.

24.        According to the passage, which of the following statements is true of bacteria that engage in photosynthesis?
(A) They eventually become two autonomous cells.
not mentioned
(B) They cannot normally also engage in nitrogen fixation.
Among photosynthetic bacteria, Anabaena is unusual: it is capable of both photosynthesis and nitrogen fixation.
since it asks among photosynthetic bacteria, so all that bacteria can do photosynthesis. Then capable of nitrogen fixation will be the unique charater.
(C) Oxygen normally inactivates them.
(D) Cellular products are constantly transferred between such bacteria.
(E) They normally lack chlorophyll.

25.        It can be inferred from the passage that cell differentiation within Anabaena is regulated by the
(A) amount of oxygen Anabaena cells produce
(B) season of the year
(C) amount of fixed nitrogen compounds available
When fixed nitrogen compounds are abundant, Anabaena is strictly photosynthetic and its cells are all alike. When nitrogen levels are low, however
(D) number of microscopic channels uniting Anabaena cells
(E) amount of chlorophyll in Anabaena cells

26.        The passage supports which of the following inferences about heterocysts?
(A) Heterocysts do not produce oxygen.
right
(B) Nitrogen gas inactivates heterocysts.
contradict
(C) Chlorophyll increases the productivity of heterocysts.
contradict
(D) Heterocysts allow nitrogen fixation and photosynthesis to occur in the same cell.
not mentioned
(E) Heterocysts are more important for Anabaena’s functioning than are photosynthetic cells.
not mentioned

27.        The author uses the example of Anabaena to illustrate the
(A) uniqueness of bacteria among unicellular organisms
not mentioned unicellular organisms
(B) inadequacy of an existing view of bacteria
an individual bacterium is more analogous to a component cell of a multicellular organism than it is to a free-living, autonomous organism
the thing after "than" is the existing view
(C) ability of unicellular organisms to engage in photosynthesis
(D) variability of a freshwater bacteria
(E) difficulty of investigating even the simplest unicellular organisms

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寄托与我 GRE梦想之帆 GRE守护之星 2015 US-applicant 荣誉版主

发表于 2015-5-23 13:16:42 |显示全部楼层
本帖最后由 无敌浩克One 于 2015-5-23 13:21 编辑

2015.5.23 comprehension note!

One advantage of breeding African bees with other bee types (Africanization) may be resistance to the parasitic mite Varroa jacobsoni, a major threat to modern beekeeping. In parts of Europe, this mite is devastating honeybees and killing many colonies despite preventive measures by beekeepers. But in Brazil Varroa jacobsoni has been present in Africanized bees since 1972 without the loss of a single colony, even though beekeepers there undertook no preventive measures. The mites lay eggs within the brood cells of immature bees, and developing mites feed on the hemolymph (blood) of bee pupae. But fewer mites reproduce in Africanized bees than in European bees. Some researchers point out that this resistance may be related to the Africanized worker bee’s shorter development period, which prevents some mites from reaching maturity. Recently the mite has become a serious problem in colonies of European bees in North America. Africanization of these bees may be the best safeguard against this parasite.

24.        The passage suggests that which of the following was true of the honeybee colonies described in line 4-6?
(A) Their life expectancy, when free of disease, was shorter than that of European bee colonies in North America.
possibly wrong
(B) They were not Africanized.
right
(C) Their life cycle did not accommodate the feeding habits of Varroa jacobsoni.
this is Africanized bee
(D) They responded well to measures to control Varroa jacobsoni.
contradict
(E) They were managed using methods that were more modern than those employed in Brazil.
contradict, Brazilian used nothing

25.        The author cites all of the following as evidence that Africanized bees’ resistance to Varroa jacobsoni is superior to that of European bees EXCEPT:
(A) Fewer Varroa jacobsoni mites reproduce in Africanized bees.
(B) Varroa jacobsoni is killing many bee colonies in Europe.
(C) Beekeepers in Brazil have not used preventive measures to protect their colonies.
(D) Brazilian bee colonies have endured Varroa jacobsoni since 1972.
(E) At least some European bee colonies have been saved by preventive measures.
not related to Africanized bees' resistance

26.        According to the passage, research suggests that one possible reason the Africanized bees in Brazil have successfully resisted Varroa jacobsoni is that
(A) the life cycle of the Africanized bee may limit the Varroa jacobsoni mite’s opportunity to reach full development
right: ome researchers point out that this resistance may be related to the Africanized worker bee’s shorter development period, which prevents some mites from reaching maturity
(B) the Africanized bees may have had an opportunity to develop a chemical resistance to Varroa jacobsoni
not mentioned chemical thing
(C) the location of bee colonies in Brazil may provide a natural deterrent to Varroa jacobsoni
not mentioned location's function
(D) Varroa jacobsoni may be relatively new to Brazil and may not have had time to become widespread
not new, since 1972
(E) beekeepers may have developed effective control techniques for Varroa jacobsoni
contradict

27.        The author’s argument regarding the resistance of Africanized bees to Varroa jacobsoni would be most weakened if which of the following were true?
(A) The bees in Brazil were resistant before being Africanized.
right
(B) The number of bee colonies in North American increased dramatically whereas the number in Brazil remained unchanged.
not relative
(C) Mites found in European bees reproduce at a faster rate than mites of identical species found in the bees in Brazil.
If the question asked which one would weaken the conclusion that Africanization of these bees may be the best safeguard against this parasite, this choice would be right.
(D) Africanized bees retain many of the characteristics of European bees.
not mentioned
(E) Bee colonies in Europe continue to produce greater quantities of honey than do those in Brazil.
not relative

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发表于 2015-5-23 13:24:12 |显示全部楼层
本帖最后由 无敌浩克One 于 2015-5-23 13:31 编辑

2015.5.23 comprehension note!

The two claws of the mature American lobster are decidedly different from each other. The crusher claw is short and stout; the cutter claw is long and slender. Such bilateral asymmetry, in which the right side of the body is, in all other respects, a mirror image of the left side, is not unlike handedness in humans. But where the majority of humans are right-handed, in lobsters the crusher claw appears with equal probability on either the right or left side of the body.
Bilateral asymmetry of the claws comes about gradually. In the juvenile fourth and fifth stages of development, the paired claws are symmetrical and cutterlike. Asymmetry begins to appear in the juvenile sixth stage of development, and the paired claws further diverge toward well-defined cutter and crusher claws during succeeding stages. An intriguing aspect of this development was discovered by Victor Emmel. He found that if one of the paired claws is removed during the fourth or fifth stage, the intact claw invariably becomes a crusher, while the regenerated claw becomes a cutter. Removal of a claw during a later juvenile stage or during adulthood, when asymmetry is present, does not alter the asymmetry; the intact and the regenerate claws retain their original structures.
These observations indicate that the conditions that trigger differentiation must operate in a random manner when the paired claws are intact but in a nonrandom manner when one of the claws is lost. One possible explanation is that differential use of the claws determines their asymmetry. Perhaps the claw that is used more becomes the crusher. This would explain why, when one of the claws is missing during the fourth or fifth stage, the intact claw always becomes a crusher. With two intact claws, initial use of one claw might prompt the animal to use it more than the other throughout the juvenile fourth and fifth stages, causing it to become a crusher.
To test this hypothesis, researchers raised lobsters in the juvenile fourth and fifth stages of development in a laboratory environment in which the lobsters could manipulate oyster chips. (Not coincidentally, at this stage of development lobsters typically change from a habitat where they drift passively, to the ocean floor where they have the opportunity to be more active by burrowing in the substrate.) Under these conditions, the lobsters developed asymmetric claws, half with crusher claws on the left, and half with crusher claws on the right. In contrast, when juvenile lobsters were reared in a smooth tank without the oyster chips, the majority developed two cutter claws. This unusual configuration of symmetrical cutter claws did not change when the lobsters were subsequently placed in a manipulatable environment or when they lost and regenerated one or both claws.

21.        The passage is primarily concerned with
(A) drawing an analogy between asymmetry in lobsters and handedness in humans
narrow the scope
(B) developing a method for predicting whether crusher claws in lobsters will appear on the left or right side
not predicting
(C) explaining differences between lobsters’ crusher claws and cutter claws
narrow the scope
(D) discussing a possible explanation for the way bilateral asymmetry is determined in lobsters
right
(E) summarizing the stages of development of the lobster
narrow the scope

22.        Each of the following statements about the development of a lobster’s crusher claw is supported by information in the passage EXCEPT:
(A) It can be stopped on one side and begun on the other after the juvenile sixth stage.
wrong obviously
(B) It occurs gradually over a number of stages.
(C) It is initially apparent in the juvenile sixth stage.
(D) It can occur even when a prospective crusher claw is removed in the juvenile sixth stage.
(E) It is less likely in the absence of a manipulatable environment.

I did this wrong because I didn't examine the choices carefully!

23.        Which of the following experimental results, if observed, would most clearly contradict the findings of Victor Emmel?
(A) A left cutterlike claw is removed in the fifth stage and a crusher claw develops on the right side.
the intact claw will grow into crusher
(B) A left cutterlike claw is removed in the fourth stage and a crusher claw develops on the left side.
contradict
(C) A left cutterlike claw is removed in the sixth stage and a crusher claw develops on the right side.
can't change since sixth stage
(D) Both cutterlike claws are removed in the fifth stage and a crusher claw develops on the left side.
(E) Both cutterlike claws are removed in the fourth stage and a crusher claw develops on the right side.
D E can't decide which side

24.        It can be inferred that of the two laboratory environments mentioned in the passage, the one with oyster chips was designed to
(A) prove that the presence of oyster chips was not necessary for the development of a crusher claw
(B) prove that the relative length of time that the lobsters were exposed to the oyster-chip environment had little impact on the development of a crusher claw
(C) eliminate the environment as a possible influence in the development of a crusher claw
(D) control on which side the crusher claw develops
(E) simulate the conditions that lobsters encounter in their natural environment
right

25.        It can be inferred from the passage that one difference between lobsters in the earlier stages of development and those in the juvenile fourth and fifth stages is that lobsters in the early stages are
(A) likely to be less active
Not coincidentally, at this stage of development lobsters typically change from a habitat where they drift passively, to the ocean floor where they have the opportunity to be more active by burrowing in the substrate.
(B) likely to be less symmetrical
(C) more likely to lose a claw
(D) more likely to replace a crusher claw with a cutter claw
(E) more likely to regenerate a lost claw

I did this wrong because I didn't understand the sentence in the brackets meaning

26.        Which of the following conditions does the passage suggest is a possible cause for the failure of a lobster to develop a crusher claw?
(A) The loss of a claw during the third or earlier stage of development
(B) The loss of a claw during the fourth or fifth stage of development
(C) The loss of a claw during the sixth stage of development
(D) Development in an environment devoid of material that can be manipulated
(E) Development in an environment that changes frequently throughout the stages of development

27.        The author regards the idea that differentiation is triggered randomly when paired claws remain intact as
(A) irrefutable considering the authoritative nature of Emmel’s observations
Emmel's observations are not related to randomly mechanism
(B) likely in view of present evidence
right
(C) contradictory to conventional thinking on lobster-claw differentiation
no contradiction
(D) purely speculative because it is based on scattered research and experimentation
no speculation
(E) unlikely because of apparent inconsistencies with theories on handedness in humans
contradict

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寄托与我 GRE梦想之帆 GRE守护之星 2015 US-applicant 荣誉版主

发表于 2015-5-23 13:33:17 |显示全部楼层
本帖最后由 无敌浩克One 于 2015-5-23 13:38 编辑

2015.5.23 comprehension note!

One explanation for the tendency of animals to be more vigilant in smaller groups than in larger ones assumes that the vigilant behavior—looking up, for example—is aimed at predators. If individuals on the edge of a group are more vigilant because they are at greater risk of being captured, then individuals on average would have to be more vigilant in smaller groups, because the animals on the periphery of a group form a greater proportion of the whole group as the size of the group diminishes.
However, a different explanation is necessary in cases where the vigilant behavior is not directed at predators. J. Krebs has discovered that great blue herons look up more often when in smaller flocks than when in larger ones, solely as a consequence of poor feeding conditions. Krebs hypothesizes that the herons in smaller flocks are watching for herons that they might follow to better feeding pools, which usually attract larger numbers of the birds.

17.        It can be inferred from the passage that in species in which vigilant behavior is directed at predators, the tendency of the animals to be more vigilant in smaller groups than in larger ones would most likely be minimized if which of the following were true?(minimized = weaken)
(A) The vigilance of animals on the periphery of a group always exceeded that of animals located in its interior, even when predators were not in the area.
(B) The risk of capture for individuals in a group was the same, whether they were located in the interior of the group or on its periphery.
right
(C) Animals on the periphery of a group tended to be less capable of defending themselves from attack by predators than animals located in the interior of the group.
not mentioned the ability of defending, only the possibility
(D) Animals on the periphery of a group tended to bear marks that were more distinctive to predators than animals located in the interior of the group.
not mentioned
(E) Animals on the periphery of a group tended to have shorter life spans than animals located in the interior of the group.
not mentioned

18.        Which of the following best describes the relationship of the second paragraph to the first?
first, two paragraphs talk about different views, A, B,C, E must be all wrong.
(A) The second paragraph relies on different evidence in drawing a conclusion similar to that expressed in the first paragraph.
(B) The second paragraph provides further elaboration on why an assertion made at the end of the first paragraph proves to be true in most cases.
(C) The second paragraph provides additional information in support of a hypothesis stated in the first paragraph.
(D) The second paragraph provides an example of a case in which the assumption described in the first paragraph is unwarranted.
right
(E) The second paragraph describes a phenomenon that has the same cause as the phenomenon described in the first paragraph.

19.        It can be inferred from the passage that the author of the passage would be most likely to agree with which of the following assertions about vigilant behavior?
(A) The larger the group of animals, the higher the probability that individuals in the interior of the group will exhibit vigilant behavior.
not mentioned, wrong comparison
(B) Vigilant behavior exhibited by individuals in small groups is more effective at warding off predators than the same behavior exhibited by individuals in larger groups.
not mentioned, wrong comparison
(C) Vigilant behavior is easier to analyze in species that are preyed upon by many different predators than in species that are preyed upon by relatively few of them.
not mentioned
(D) The term “vigilant,” when used in reference to the behavior of animals, does not refer exclusively to behavior aimed at avoiding predators.
right
(E) The term “vigilant,” when used in reference to the behavior of animals, usually refers to behavior exhibited by large groups of animals.
wrong

20.        The passage provides information in support of which of the following assertions?
(A) The avoidance of predators is more important to an animal’s survival than is the quest for food.
wrong comparison
(B) Vigilant behavior aimed at predators is seldom more beneficial to groups of animals than to individual animals.
wrong comparison
(C) Different species of animals often develop different strategies for dealing with predators.
not mentioned
(D) The size of a group of animals does not necessarily reflect its success in finding food.
not mentioned
(E) Similar behavior in different species of animals does not necessarily serve the same purpose.
right

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发表于 2015-5-23 13:41:19 |显示全部楼层
本帖最后由 无敌浩克One 于 2015-5-23 13:46 编辑

2015.5.23 comprehension note!

Experiments show that insects can function as pollinators of cycads, rare, palmlike tropical plants. Furthermore, cycads removed from their native habitats—and therefore from insects native to those habitats—are usually infertile. Nevertheless, anecdotal reports of wind pollination in cycads cannot be ignored. The structure of cycads male cones is quite consistent with the wind dispersal of pollen, clouds of which are released from some of the larger cones. The male cone of Cycas circinalis, for example, sheds almost 100 cubic centimeters of pollen, most of which is probably dispersed by wind. Still, many male cycad cones are comparatively small and thus produce far less pollen. Furthermore, the structure of most female cycad cones seems inconsistent with direct pollination by wind. Only in the Cycas genus are the females’ ovules accessible to airborne pollen, since only in this genus are the ovules surrounded by a loose aggregation of megasporophylls rather than by a tight cone.

24.        According to the passage, the size of a male cycad cone directly influences which of the following?
(A) The arrangement of the male cone’s structural elements
(B) The mechanism by which pollen is released from the male cone
(C) The degree to which the ovules of female cycads are accessible to airborne pollen
(D) The male cone’s attractiveness to potential insect pollinators
(E) The amount of pollen produced by the male cone

25.        The passage suggests that which of the following is true of the structure of cycad cones?
(A) The structure of cycad cones provides conclusive evidence in favor of one particular explanation of cycad pollination.
no conclusive evidence
(B) The structure of cycad cones provides evidence concerning what triggers the first step in the pollination process.
(C) An irresolvable discrepancy exists between what the structure of most male cycad cones suggests about cycad pollination and what the structure of most female cones suggests about that process.
(D) The structure of male cycad cones rules out a possible mechanism for cycad pollination that is suggested by the structure of most female cycad cones.
(E) The structure of male cycad cones is consistent with a certain means of cycad pollination, but that means is inconsistent with the structure of most female cycad cones.
the structure of cycads male cones is quite consistent with the wind dispersal of pollen
Furthermore, the structure of most female cycad cones seems inconsistent with direct pollination by wind

I did this wrong because I didn't examine the choices carefully!

26.        The evidence in favor of insect pollination of cycads presented in lines 2-4 would be more convincing if which of the following were also true?
(A) Only a small variety of cycad species can be successfully transplanted.
(B) Cycads can sometimes be pollinated by means other than wind or insects.
(C) Insects indigenous to regions to which cycads are transplanted sometimes feed on cycads.
(D) Winds in the areas to which cycads are usually transplanted are similar to winds in cycads’ native habitats.
(E) The transplantation of cycads from one region to another usually involves the accidental removal and introduction of insects as well.

27.        The passage suggests that which of the following is true of scientific investigations of cycad pollination?
(A) They have not yet produced any systematic evidence of wind pollination in cycads.
right, only anecdotal reports
(B) They have so far confirmed anecdotal reports concerning the wind pollination of cycads.
no so far, they have proceeded this stage.
(C) They have, until recently, produced little evidence in favor of insect pollination in cycads.
not mentioned more or little
(D) They have primarily been carried out using cycads transplanted from their native habitats.
not mentioned primarily
(E) They have usually concentrated on describing the physical characteristics of the cycad reproductive system.
the insects pollination is not about physical characteristics

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RE: 有木有潜伏在G版的托福党啊,寻找托福口语小伙伴啊!! [修改]

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有木有潜伏在G版的托福党啊,寻找托福口语小伙伴啊!!
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