问答

1答疑

[Sentence Correction]

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题目：

The United States petroleum industry’s cost to meet environmental regulations is projected at ten percent of the price per barrel of refined petroleum by the end of the decade.

选项:

A、The United States petroleum industry’s cost to meet environmental regulations is projected at ten percent of the price per barrel of refined petroleum by the end of the decade.
B、The United States petroleum industry’s cost by the end of the decade to meet environmental regulations is estimated at ten percent of the price per barrel of refined petroleum.
C、By the end of the decade, the United States petroleum industry’s cost of meeting environmental regulations is projected at ten percent of the price per barrel of refined petroleum.
D、To meet environmental regulations, the cost to the United States petroleum industry is estimated at ten percent of the price per barrel of refined petroleum by the end of the decade.
E、It is estimated that by the end of the decade the cost to the United States petroleum industry of meeting environmental regulations will be ten percent of the price per barrel of refined petroleum.

答案:

E
1答疑

[Reading Comprehension]

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文章：

题目：

Which of the following, if true, would most clearly undermine Gallagher’s explanation of the link between Royalism and feminism?

选项:

A、Because of their privileged backgrounds, Royalist women were generally better educated than were their Parliamentarian counterparts.
B、Filmer himself had read some of Cavendish’s early writings and was highly critical of her ideas.
C、Cavendish’s views were highly individual and were not shared by the other Royalist women who wrote early feminist works.
D、The Royalist and Parliamentarian ideologies were largely in agreement on issues of family organization and women’s political rights.
E、The Royalist side included a sizable minority faction that was opposed to the more radical tendencies of Filmerian patriarchalism.

答案:

C
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[Sentence Correction]

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题目：

To protect English manufacturers of woolen goods both against American and Irish competition, England passed the Woolens Act of 1698, which prohibited the export of woolen cloth beyond a colony's borders.

选项:

A、 To protect English manufacturers of woolen goods both against American and Irish competition, England passed the Woolens Act of 1698
B、 In order to protect English manufacturers of woolen goods against both American and Irish competition, England passed the Woolens Act of 1698
C、 In order to protect English manufacturers of woolen goods against American, as well as against Irish, competition, the Woolens Act of 1698 was passed by England
D、 For protecting English manufacturers of woolen goods against American, as well as Irish, competition, England passed the Woolens Act of 1698
E、 For the protection of English manufacturers of woolen goods against both American and Irish competition, the Woolens Act of 1698, passed by England

答案:

B
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[Reading Comprehension]

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文章：

Line When asteroids collide, some collisions cause
an asteroid to spin faster; others slow it down. If
asteroids are all monoliths—single rocks—undergoing
random collisions, a graph of their rotation rates
(5) should show a bell-shaped distribution with statistical
“tails” of very fast and very slow rotators. If asteroids
are rubble piles, however, the tail representing the
very fast rotators would be missing, because any
loose aggregate spinning faster than once every few
(10) hours (depending on the asteroid’s bulk density)
would fly apart. Researchers have discovered that
all but five observed asteroids obey a strict limit on
rate of rotation. The exceptions are all smaller than
200 meters in diameter, with an abrupt cutoff for
(15) asteroids larger than that.
The evident conclusion—that asteroids larger than
200 meters across are multicomponent structures or
rubble piles—agrees with recent computer modeling
of collisions, which also finds a transition at that
(20) diameter. A collision can blast a large asteroid to bits,
but after the collision those bits will usually move
slower than their mutual escape velocity. Over several
hours, gravity will reassemble all but the fastest
pieces into a rubble pile. Because collisions among
(25) asteroids are relatively frequent, most large bodies
have already suffered this fate. Conversely, most
small asteroids should be monolithic, because impact
fragments easily escape their feeble gravity.

题目：

The discovery of which of the following would call into question the conclusion mentioned in line 16?

选项:

A、An asteroid 100 meters in diameter rotating at a rate of once per week
B、An asteroid 150 meters in diameter rotating at a rate of 20 times per hour
C、An asteroid 250 meters in diameter rotating at a rate of once per week
D、An asteroid 500 meters in diameter rotating at a rate of once per hour
E、An asteroid 1,000 meters in diameter rotating at a rate of once every 24 hours

答案:

D
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[Data Sufficiency]

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题目：

Is the sum of p2 and q2 greater than 1?
(1)   p is greater than 1/2.
(2) q is greater than 1/2.

选项:

答案:

E
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[Sentence Correction]

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题目：

The type of behavior exhibited when an animal recognizes itself in a mirror comes within the domain of “theory of mind,” thus is best studied as part of the field of animal cognition.

选项:

A、
A. of “theory of mind,” thus is best
B、
B. “theory of mind,” and so is best to be
C、
C. of a “theory of mind,” thus it is best
D、
D. of “theory of mind” and thus is best
E、
E. of the “theory of mind,” and so it is best to be

答案:

D
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[Data Sufficiency]

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题目：

The only articles of clothing in a certain closet are shirts, dresses, and jackets. The ratio of the number of shirts to the number of dresses to the number of jackets in the closet is 9:4:5, respectively. If there are more than 7 dresses in the closet, what is the total number of articles of clothing in the closet?
  1. The total number of shirts and jackets in the closet is less than 30.
  2. The total number of shirts and dresses in the closet is 26.

选项:

A、Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B、Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C、BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D、EACH statement ALONE is sufficient.
E、Statements (1) and (2) TOGETHER are not sufficient.

答案:

D
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[Reading Comprehension]

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文章：

Line Anthropologists once thought that the ancestors
of modern humans began to walk upright because
it freed their hands to use stone tools, which they
had begun to make as the species evolved a brain of
(5) increased size and mental capacity. But discoveries
of the three-million-year-old fossilized remains of
our hominid ancestor Australopithecus have yielded
substantial anatomical evidence that upright walking
appeared prior to the dramatic enlargement of the
(10) brain and the development of stone tools.
Walking on two legs in an upright posture (bipedal
locomotion) is a less efficient proposition than walking
on all fours (quadrupedal locomotion) because several
muscle groups that the quadruped uses for propulsion
(15) must instead be adapted to provide the biped with
stability and control. The shape and configuration
of various bones must likewise be modified to allow
the muscles to perform these functions in upright
walking. Reconstruction of the pelvis (hipbones) and
(20) femur (thighbone) of “Lucy,” a three-million-year-old
skeleton that is the most complete fossilized skeleton
from the Australopithecine era, has shown that they
are much more like the corresponding bones of the
modern human than like those of the most closely
(25) related living primate, the quadrupedal chimpanzee.
Lucy’s wide, shallow pelvis is actually better suited to
bipedal walking than is the rounder, bowl-like pelvis of
the modern human, which evolved to form the larger
birth canal needed to accommodate the head of a
(30) large-brained human infant. By contrast, the head of
Lucy’s baby could have been no larger than that of a
baby chimpanzee.
If the small-brained australopithecines were not
toolmakers, what evolutionary advantage did they
(35) gain by walking upright? One theory is that bipedality
evolved in conjunction with the nuclear family:
monogamous parents cooperating to care for their
offspring. Walking upright permitted the father to
use his hands to gather food and carry it to his mate
(40) from a distance, allowing the mother to devote more
time and energy to nurturing and protecting their
children. According to this view, the transition to
bipedal walking may have occurred as long as ten
million years ago, at the time of the earliest hominids,
(45) making it a crucial initiating event in human evolution.

题目：

The theory mentioned in lines 35–38 suggests that which of the following was true for the hominid ancestors of modern humans before they made the transition to walking upright?

选项:

A、Their brains were smaller than the brains of present-day chimpanzees.
B、They competed rather than cooperated in searching for food.
C、Their mating patterns and family structure were closer to those of present-day chimpanzees than to those of modern humans.
D、Males played a more significant role in child rearing than they played after the transition to walking upright.
E、Females’ ability to nurture and protect their offspring was limited by the need to find food for themselves.

答案:

E
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[Critical Reasoning]

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题目：

Scientist: In an experiment, dogs had access to a handle they could pull to release food into a nearby enclosure that contained a familiar dog and nothing else, contained an unfamiliar dog and nothing else, or was empty. The dogs typically released more food to the familiar dog than to the unfamiliar dog. This suggests that dogs are more motivated to help other dogs they know than to help unfamiliar dogs.

The scientist's argument would be most strengthened if it were true that, in the experiment, the dogs with access to the handle tended to release more food when

选项:

A、the behavior was being encouraged by a familiar person than when it was being encouraged by an unfamiliar person
B、the enclosure was empty than when it contained an unfamiliar dog
C、an unfamiliar dog in the enclosure was displaying hostility toward them than when an unfamiliar dog in the enclosure appeared friendly
D、a dog in the enclosure appeared uninterested in food already released into the enclosure than when it appeared interested in that food
E、a familiar dog was in the enclosure than when a familiar dog was visible but the enclosure was empty

答案:

E
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[Sentence Correction]

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题目：

The overall slackening of growth in productivity is influenced less by government regulation, although that is significant for specific industries like mining, than the coming to an end of a period of rapid growth in agricultural productivity.

选项:

A、the coming to an end of
B、the ending of
C、by the coming to an end of
D、by ending
E、by the end of

答案:

C
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329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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[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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[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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564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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[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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[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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[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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[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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[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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157324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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