问答

1答疑

[Reading Comprehension]

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题目：

It can be inferred from the passage that the most recent feminist social science research on women and class seeks to do which of the following?

选项:

A、 Introduce a divergent new theory about the relationship between legal status and gender
B、 Illustrate an implicit middle-class bias in earlier feminist models of class and gender
C、 Provide evidence for the position that gender matters more than wealth in determining class status
D、 Remedy perceived inadequacies of both traditional social science models and earlier feminist analyses of class and gender
E、 Challenge the economic definitions of class used by traditional social scientists

答案:

D
1答疑

[Data Sufficiency]

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题目：

One kilogram of a certain coffee blend consists of x kilogram of type I coffee and y kilogram of type II coffee. The cost of the blend is C dollars per kilogram, where C = 6.5x + 8.5y.  Is x ＜ 0.8?
(1)   y ＞ 0.15
(2) C ≥ 7.30
慴整

选项:

答案:

B
1答疑

[Sentence Correction]

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题目：

Methane, which has long been counted among the greenhouse gases that are implicated in global warming, comes both from natural sources such as bogs and from a host of human sources, including coal mines, leaking pipelines, landfills, and rice paddies.

选项:

A、 that are implicated in global warming, comes both from
B、 that are implicated in global warming, coming from both
C、 being implicated in global warming, comes from both
D、 implicated in global warming and coming both from
E、 implicated in global warming, that come both from

答案:

A
1答疑

[Reading Comprehension]

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试题详情

文章：

Line Resin is a plant secretion that hardens when
exposed to air; fossilized resin is called amber.
Although Pliny in the first century recognized that
amber was produced from “marrow discharged by
(5) trees,” amber has been widely misunderstood to be
a semiprecious gem and has even been described
in mineralogy textbooks. Confusion also persists
surrounding the term “resin,” which was defined
before rigorous chemical analyses were available.
(10) Resin is often confused with gum, a substance
produced in plants in response to bacterial infections,
and with sap, an aqueous solution transported
through certain plant tissues. Resin differs from both
gum and sap in that scientists have not determined a
(15) physiological function for resin.
In the 1950s, entomologists posited that resin
may function to repel or attract insects. Fraenkel
conjectured that plants initially produced resin in
nonspecific chemical responses to insect attack
(20) and that, over time, plants evolved that produced
resin with specific repellent effects. But some insect
species, he noted, might overcome the repellent
effects, actually becoming attracted to the resin.
This might induce the insects to feed on those
(25) plants or aid them in securing a breeding site.
Later researchers suggested that resin mediates
the complex interdependence, or “coevolution,” of
plants and insects over time. Such ideas led to the
development of the specialized discipline of chemical
(30) ecology, which is concerned with the role of plant
chemicals in interactions with other organisms and
with the evolution and ecology of plant antiherbivore
chemistry (plants’ chemical defenses against attack
by herbivores such as insects).

题目：

The author refers to “bacterial infections” (see line 11) most likely in order to

选项:

A、describe the physiological function that gum performs in plants
B、demonstrate that sap is not the only substance that is transported through a plant’s tissues
C、explain how modern chemical analysis has been used to clarify the function of resin
D、show that gum cannot serve as an effective defense against herbivores
E、give an example of how confusion has arisen with regard to the nature of resin

答案:

A
1答疑

[Sentence Correction]

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题目：

When working with overseas clients, an understanding of cultural norms is at least as important as grasping the pivotal business issues for the global manager.

选项:

A、When working with overseas clients, an understanding of cultural norms is at least as important as grasping the pivotal business issues for the global manager.
B、When they work with overseas clients, understanding cultural norms is at least of equivalent importance to grasping the pivotal business issues for the global manager.
C、For global managers working with overseas clients, understanding cultural norms is at least as important as grasping the pivotal business issues.
D、For global managers working with overseas clients, an understanding of cultural norms is at least as important to them as grasping the pivotal business issues.
E、Global managers working with overseas clients find an understanding of cultural norms to be equally important to grasping the pivotal business issues.

答案:

C
1答疑

[Sentence Correction]

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题目：

Industrialization and modern methods of insect control have improved the standard of living around the globe while at the same time they have introduced some 100,000 dangerous chemical pollutants, having gone virtually unregulated since they were developed more than 50 years ago.

选项:

A、while at the same time they have introduced some 100,000 dangerous chemical pollutants, having
B、while at the same time introducing some 100,000 dangerous chemical pollutants that have
C、while they have introduced some 100,000 dangerous chemical pollutants at the same time, which have
D、but introducing some 100,000 dangerous chemical pollutants at the same time that have
E、but at the same time introducing some 100,000 dangerous chemical pollutants, having

答案:

B
1答疑

[Problem Solving]

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题目：

A certain store will order 25 crates of apples. The apples will be of three different varieties—McIntosh, Rome, and Winesap—and each crate will contain apples of only one variety. If the store is to order more crates of Winesap than crates of McIntosh and more crates of Winesap than crates of Rome, what is the least possible number of crates of Winesap that the store will order?

选项:

A、7
B、8
C、9
D、10
E、11

答案:

C
1答疑

[Reading Comprehension]

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文章：

In terrestrial environments, gravity places special demands on the cardiovascular systems of animals. Gravitational pressure can cause blood to pool in the lower regions of the body, making it difficult to circulate blood to critical organs such as the brain. Terrestrial snakes, in particular, exhibit adaptations that aid in circulating blood against the force of gravity.

The problem confronting terrestrial snakes is best illustrated by what happens to sea snakes when removed from their supportive medium. Because the vertical pressure gradients within the blood vessels are counteracted by similar pressure gradients in the surrounding water, the distribution of blood throughout the body of sea snakes remains about the same regardless of their orientation in space, provided they remain in the ocean. When removed from the water and tilted at various angles with the head up, however, blood pressure at their midpoint drops significantly, and at brain level falls to zero. That many terrestrial snakes in similar spatial orientations do not experience this kind of circulatory failure suggests that certain adaptations enable them to regulate blood pressure more effectively in those orientations.

One such adaptation is the closer proximity of the terrestrial snake’s heart to its head, which helps to ensure circulation to the brain, regardless of the snake’s orientation in space. The heart of sea snakes can be located near the middle of the body, a position that minimizes the work entailed in circulating blood to both extremities. In arboreal snakes, however, which dwell in trees and often assume a vertical posture, the average distance from the heart to the head can be as little as 15 percent of overall body length. Such a location requires that blood circulated to the tail of the snake travel a greater distance back to the heart, a problem solved by another adaptation. When climbing, arboreal snakes often pause momentarily to wiggle their bodies, causing waves of muscle contraction that advance from the lower torso to the head. By compressing the veins and forcing blood forward, these contractions apparently improve the flow of venous blood returning to the heart.

题目：

It can be inferred from the passage that which of the following is a true statement about sea snakes?

选项:

A、They frequently rely on waves of muscle contractions from the lower torso to the head to supplement the work of the heart.They cannot effectively regulate their blood pressure when placed in seawater and tilted at an angle with the head pointed downward.
B、They are more likely to have a heart located in close proximity to their heads than are arboreal snakes.
C、They become acutely vulnerable to the effects of gravitational pressure on their circulatory system when they are placed in a terrestrial environment.
D、Their cardiovascular system is not as complicated as that of arboreal snakes.

答案:

D
1答疑

[Data Sufficiency]

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题目：

What is the value of 3-(x + y ) / 3-(x - y )?
(1)     x = 2
(2)     y = 3

选项:

答案:

B
1答疑

[Problem Solving]

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题目：

Aaron will jog from home at x miles per hour and then walk back home by the same route at y miles per hour. How many miles from home can Aaron jog so that he spends a total of t  hours jogging and walking?

选项:

A、
B、
C、
D、
E、

答案:

C
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1142浏览

[Undefined]

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Art historian: Unlike many artistic traditions that sought to depict plants native to the local area in a seasonally appropriate way (for example, depicting scenes of spring with the plants in the appropriate stages of development for that season), seventeenth-century Dutch artists specializing in flower paintings almost exclusively chose to depict exotic species of flowers from outside the local area. Painting such species was worthwhile primarily because the art-buying public had developed a strong preference for images of the exotic. The great botanical centers of the time gave the artists direct access to such flowers, which the artists would freely combine in a single painting, regardless of whether the combined species occurred together in the wild, and depicted each in full bloom, regardless of whether those species bloomed at the same time in nature.

Statement: The art historian makes the point that the species of flowers these Dutch artists chose to paint were 1 largely because the species were 2 .

Select for 1 and for 2 the options that complete the statement so that it is most strongly supported by the information provided. Make only two selections, one in each column.
我选的CE，和EC有什么区别？怎么选出EC的？
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3256浏览

[Undefined]

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An unusually severe winter occurred in Europe after the continent was blanketed by a blue haze resulting from the eruption of the Laki Volcano in the European republic of Iceland in the summer of 1984.  Thus, it is evident that major eruptions cause the atmosphere to become cooler than it would be otherwise.
Which of the following statements, if true, most seriously weakens the argument above?
C选项为什么就不会有张冠李戴的问题呢，1984和1982的气候情况能一样吗，C里的火山就可以试用于原文的火山吗
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3609浏览

[Undefined]

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The rate of a certain chemical reaction is directly proportional to the square of the concentration of chemical A present and inversely proportional to the concentration of chemical B present. If the concentration of chemical B is increased by 100 percent, which of the following is closest to the percent change in the concentration of chemical A required to keep the reaction rate unchanged?
为什么这个题一定是相乘不能是相加呢？y=k1A方-k2B （k1,k2大于0 ），也满足题目说的与A方成正比与B成反比啊？但是这道题只有相乘的情况才能选出正确答案
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1196浏览

[Undefined]

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Tiger beetles are such fast runners that they can capture virtually any nonflying insect.  However, when running toward an insect, the beetles intermittently stop, and then, a moment later, resume their attack.  Perhaps they cannot maintain their pace and must pause for a moment's rest; but an alternative hypothesis is that while running tiger beetles are unable to process the resulting rapidly changing visual information, and so quickly go blind and stop.
 
Which of the following, if discovered in experiments using artificially moved prey insects, would support one of the two hypotheses and undermine the other?
答案C是怎么支持一个猜想又削弱另一个猜想的？
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2749浏览

[GWD]

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The author of the passage implies that which of the following is a possible partial explanation for acquisition behavior during the 1970's and 1980's?
请解释这道题为什么不选C或E，除了正确选项B，我认为文中也正确地提到了这两个选项可以解释acquisition behavior during 1970s and 80s
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1890浏览

[OG]

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The primary purpose of the passage is to
为什么选E不选B
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1212浏览

[Undefined]

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Club X has more than 10 but fewer than 40 members. Sometimes the members sit at tables with 3 members at one table and 4 members at each of the other tables, and sometimes they sit at tables with 3 members at one table and 5 members at each of the other tables. If they sit at tables with 6 members at each table except one and fewer than 6 members at that one table, how many members will be at the table that has fewer than 6 members?
提问小梅老师 这道题求讲一下 我没什么思路 带入数字得的是3
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1272浏览

[Undefined]

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A photography dealer ordered 60 Model X cameras to be sold for $250 each, which represents a 20 percent markup over the dealer's initial cost for each camera. Of the cameras ordered, 6 were never sold and were returned to the manufacturer for a refund of 50 percent of the dealer's initial cost. What was the dealer's approximate profit or loss as a percent of the dealer's initial cost for the 60 cameras?
请问小梅老师 这道题讲讲一下 我算的是19% 原来成本是200每个 亏了6个 每个亏100. 最后得不出答案
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302507浏览

[Undefined]

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Analytical!
请问may老师，这题该用什么思路来做？
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309634浏览

[Undefined]

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Analytical!
请问张老师，这道题为什么D不对？我有我觉得second paragraph最后一句话特别指向D
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