问答

1答疑

[Critical Reasoning]

登录查看答疑

试题详情

题目：

Diseases have always plagued the earth’s living organisms. Scientists believe that huge numbers of plant and animal diseases have developed and been eradicated naturally over time. This ongoing emergence and disappearance of diseases is ignored by those who blame the widespread incidence of cancer entirely upon man’s alteration of naturally occurring substances to, for instance, produce bigger and better food sources. For example, some claim that the use of hormones to increase meat production heightens the risk of cancer in people who eat meat. People who hold this view need to accept the fact that even if cancer was not such a prevalent disease, another disease would have arisen naturally to take its place.
Which one of the following identifies a flaw in the passage’s reasoning?

选项:

A、A. The writer wrongly assumes that the use of hormones in meat production never has an effect upon people who eat meat.
B、B. The writer ignores the fact that scientists are developing cures for some types of cancer.
C、C. The writer does not consider the fact that a number of diseases have not yet been discovered.
D、D. While the writer identifies a group that believes cancer is caused by man's interference with natural forms of food production, he does not identify or recognize scientists who disagree with this contention.
E、E. The author does not acknowledge that man's alteration of naturally occurring substances might trigger the emergence of new diseases.

答案:

E
1答疑

[Data Sufficiency]

登录查看答疑

试题详情

题目：

Joanna bought only $0.15 stamps and $0.29 stamps. How many $0.15 stamps did she buy?
(1)   She bought $4.40 worth of stamps.
(2)   She bought an equal number of $0.15 stamps and $0.29 stamps.

选项:

答案:

A
1答疑

[Argument Essay]

登录查看答疑

试题详情

题目：

Read the statement and the instructions that follow it, and then make any notes that will help you plan your response. Begin typing your response in the box at the bottom of the screen.
 
The following appeared in a memorandum from the owner of Carlo's Clothing to the staff.
 
"Since Disc Depot, the music store on the next block, began a new radio advertising campaign last year, its business has grown dramatically, as evidenced by the large increase in foot traffic into the store. While the Disc Depot's owners have apparently become wealthy enough to retire ,profits at Carlo's Clothing have remained stagnant for the past three years. In order to boost our sales and profits, we should therefore switch from newspaper advertising to frequent radio advertisements like those for Disc Depot."
 
Discuss how well reasoned . . .etc.

选项:

答案:

1答疑

[Problem Solving]

登录查看答疑

试题详情

题目：

M is the sum of the reciprocals of the consecutive integers from 201 to 300, inclusive. Which of the following is true?

选项:

A、
B、
C、
D、
E、

答案:

A
1答疑

[Problem Solving]

登录查看答疑

试题详情

题目：

选项:

A、A disturbance of salmonid spawning streams caused by human activity could increase the straying rate of affected salmonid populations as much as the aftermath of the Mount Saint Helens eruption did.
B、In the streams in which the straying salmonid spawn, these straying salmonid would amount to no more than 40 percent of the total spawning population.
C、Salmonid in some streams benefit from particular local adaptations.
D、Nonenvironmental factors have no effect on salmonid straying rates.
E、At least some of the streams in which straying salmonid would spawn are pristine, affected by neither natural nor artificial disturbances.

答案:

D
1答疑

[Critical Reasoning]

登录查看答疑

试题详情

题目：

Last year a global disturbance of weather patterns disrupted harvests in many of the world’s important agricultural areas. Worldwide production of soybeans, an important source of protein for people and livestock alike, was not adversely affected, however. Indeed, last year’s soybean crop was actually slightly larger than average. Nevertheless, the weather phenomenon is probably responsible for a recent increase in the world price of soybeans.

Which of the following, if true, provides the strongest justification for the attribution of the increase in soybean prices to the weather phenomenon?

选项:

A、Last year’s harvest of anchovies, which provide an important protein source for livestock, was disrupted by the effects of the weather phenomenon.
B、Most countries that produce soybeans for export had above-average harvests of a number of food crops other than soybeans last year.
C、The world price of soybeans also rose several years ago, immediately after an earlier occurrence of a similar global weather disturbance.
D、Heavy rains attributable to the weather phenomenon improved grazing pastures last year, allowing farmers in many parts of the world to reduce their dependence on supplemental feed.
E、Prior to last year, soybean prices had been falling for several years.

答案:

A
1答疑

[Reading Comprehension]

登录查看答疑

试题详情

文章：

Line Human beings, born with a drive to explore and
experiment, thrive on learning. Unfortunately,
corporations are oriented predominantly toward
controlling employees, not fostering their learning.
(5) Ironically, this orientation creates the very
conditions that predestine employees to mediocre
performances. Over time, superior performance
requires superior learning, because long-term
corporate survival depends on continually exploring
(10) new business and organizational opportunities that
can create new sources of growth.
To survive in the future, corporations must
become “learning organizations,” enterprises that
are constantly able to adapt and expand their
(15) capabilities. To accomplish this, corporations must
change how they view employees. The traditional
view that a single charismatic leader should set the
corporation’s direction and make key decisions is
rooted in an individualistic worldview. In an
(20) increasingly interdependent world, such a view is no
longer viable. In learning organizations, thinking and
acting are integrated at all job levels. Corporate
leadership is shared, and leaders become
designers, teachers, and stewards, roles requiring
(25) new skills: the ability to build shared vision, to
reveal and challenge prevailing mental models, and
to foster broader, more integrated patterns of
thinking. In short, leaders in learning organizations
are responsible for building organizations in which
(30) employees are continually learning new skills and
expanding their capabilities to shape their future.

题目：

Which of the following best describes employee behavior encouraged within learning organizations, as such organizations are described in the passage?

选项:

答案:

E
1答疑

[Reading Comprehension]

登录查看答疑

试题详情

文章：

Line Micro-wear patterns found on the teeth of long-
extinct specimens of the primate species
australopithecine may provide evidence about their
diets. For example, on the basis of tooth micro-wear
(5) patterns, Walker dismisses Jolly’s hypothesis that
australopithecines ate hard seeds. He also disputes
Szalay’s suggestion that the heavy enamel of
australopithecine teeth is an adaptation to bone
crunching, since both seed cracking and bone
(10) crunching produce distinctive micro-wear
characteristics on teeth. His conclusion that
australopithecines were frugivores (fruit eaters) is
based upon his observation that the tooth micro-
wear characteristics of east African
(15) australopithecine specimens are indistinguishable
from those of chimpanzees and orangutans, which
are commonly assumed to be frugivorous primates.
However, research on the diets of
contemporary primates suggests that micro-wear
(20) studies may have limited utility in determining the
foods that are actually eaten. For example, insect
eating, which can cause distinct micro-wear
patterns, would not cause much tooth abrasion in
modern baboons, who eat only soft-bodied insects
(25) rather than hard-bodied insects. In addition, the
diets of current omnivorous primates vary
considerably depending on the environments that
different groups within a primate species inhabit; if
australopithecines were omnivores too, we might
(30) expect to find considerable population variation in
their tooth micro-wear patterns. Thus, Walker’s
description of possible australopithecine diets may
need to be expanded to include a much more
diverse diet.

题目：

According to the passage, Walker and Szalay disagree on which of the following points?

选项:

答案:

E
1答疑

[Reading Comprehension]

登录查看答疑

试题详情

文章：

Line         Two works published in 1984 demonstrate
  contrasting approaches to writing the history of
  United States women. Buel and Buel’s biography
  of Mary Fish (1736–1818) makes little effort to
(5) place her story in the context of recent
  historiography on women. Lebsock, meanwhile,
  attempts not only to write the history of women in
  one southern community, but also to redirect two
  decades of historiographical debate as to
(10) whether women gained or lost status in the
  nineteenth century as compared with the
  eighteenth century. Although both books offer the
  reader the opportunity to assess this controversy
  regarding women’s status, only Lebsock’s deals with
(15) it directly. She examines several different aspects
  of women’s status, helping to refine and resolve the
  issues. She concludes that while
  women gained autonomy in some areas,
  especially in the private sphere, they lost it in
(20) many aspects of the economic sphere. More
  importantly, she shows that the debate itself
  depends on frame of reference: in many respects,
  women lost power in relation to men, for example,
  as certain jobs (delivering babies, supervising
(25) schools) were taken over by men. Yet women also
  gained power in comparison with their previous
  status, owning a higher proportion of real estate,
  for example. In contrast, Buel and Buel’s
  biography provides ample raw material for
(30) questioning the myth, fostered by some
  historians, of a colonial golden age in the
  eighteenth century but does not give the reader
  much guidance in analyzing the controversy over
  women’s status.


题目：

The author of the passage mentions the supervision of schools primarily in order to

选项:

A、remind readers of the role education played in the cultural changes of the nineteenth century in the United States
B、suggest an area in which nineteenth-century American women were relatively free to exercise power
C、provide an example of an occupation for which accurate data about women’s participation are difficult to obtain
D、speculate about which occupations were considered suitable for United States women of the nineteenth century
E、illustrate how the answers to questions about women’s status depend on particular contexts

答案:

E
1答疑

[Reading Comprehension]

登录查看答疑

试题详情

文章：

题目：

The passage suggests that many African American people responded to their experiences in the armed forces in which of the following ways?

选项:

A、They maintained as civilians their enthusiastic allegiance to the armed forces.
B、They questioned United States involvement in the First World War.
C、They joined political organizations to protest the segregation of African American troops and the indignities they suffered in the military.
D、They became aware of the gap between their expectations and the realities of American culture.
E、They repudiated Garvey's message of pride and unity.

答案:

D
0评分
359浏览

[Undefined]

登录查看答疑
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？
0评分
1323浏览

[Undefined]

登录查看答疑
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
0评分
1499浏览

[Undefined]

登录查看答疑
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
0评分
580浏览

[Undefined]

登录查看答疑
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？
0评分
1342浏览

[GWD]

登录查看答疑
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
0评分
954浏览

[OG]

登录查看答疑
The primary purpose of the passage is to
为什么选E不选B
0评分
639浏览

[Undefined]

登录查看答疑
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
0评分
652浏览

[Undefined]

登录查看答疑
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
0评分
153536浏览

[Undefined]

登录查看答疑
Analytical!
请问may老师，这题该用什么思路来做？
0评分
160645浏览

[Undefined]

登录查看答疑
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
点我领取
免费专项课程
 在线咨询