问答

1答疑

[Sentence Correction]

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题目：

For the first time in the modern era, non-Hispanic Whites are officially a minority in California, which amounts to a little less than half the population of the state, down from nearly there-quarters only a decade ago.

选项:

A、which amounts to a little less than half the population of the state, down from nearly three-quarters only a decade ago
B、which amounts to a little less than half the population of the state, down from a decade ago, when it was nearly three-quarters
C、and that amounts to a little less than half the population of the state, down from a decade ago, when they were nearly three-quarters
D、amounting to a little less than half the population of the state, down from nearly three-quarters a decade ago
E、amounting to a little less than half the population of the state, down from what it was a decade ago by nearly three-quarters

答案:

D
1答疑

[Data Sufficiency]

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题目：

Jill has applied for a job with each of two different companies. What is the probability that she will get job offers from both companies?
  1. The probability that she will get a job offer from neither company is 0.3.
  2. The probability that she will get a job offer from exactly one of the two companies is 0.5.

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:

C
1答疑

[Critical Reasoning]

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题目：

Personnel officer:  The exorbitant cost of our health-insurance benefits reflects the high dollar amount of medical expenses incurred by our employees.  Employees who are out of shape, as a group, have higher doctor bills and longer hospital stays than do their colleagues who are fit.  Therefore, since we must reduce our health-insurance costs, we should offer a rigorous fitness program of jogging and weight lifting to all employees, and require employees who are out of shape to participate.
 
The conclusion reached by the personnel officer depends on which of the following assumptions?

选项:

A、A person who is fit would receive a routine physical checkup by a doctor less regularly than would a person who is out of shape.
B、The medical expenses incurred by employees who are required to participate in the fitness program would be less than those incurred by employees who are not required to participate.
C、The strenuous activities required of out-of-shape employees by the program would not by themselves generate medical expenses greater than any reduction achieved by the program.
D、The fitness program would serve more employees who are out of shape than it would employees who are fit.
E、The employees who participate in the fitness program would be away from work because of illness less than would the employees who do not participate.

答案:

C
1答疑

[Reading Comprehension]

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文章：

Line Carotenoids, a family of natural pigments, form
an important part of the colorful signals used by
many animals. Animals acquire carotenoids either
directly (from the plants and algae that produce
(5) them) or indirectly (by eating insects) and store them
in a variety of tissues. Studies of several animal
species have shown that when choosing mates,
females prefer males with brighter carotenoid-based
coloration. Owens and Olson hypothesize that the
(10) presence of carotenoids, as signaled by coloration,
would be meaningful in the context of mate selection
if carotenoids were either rare or required for
health. The conventional view is that carotenoids
are meaningful because they are rare: healthier
(15) males can forage for more of the pigments than
can their inferior counterparts. Although this may be
true, there is growing evidence that carotenoids are
meaningful also because they are required: they are
used by the immune system and for detoxification
(20) processes that are important for maintaining health.
It may be that males can use scarce carotenoids
either for immune defense and detoxification or for
attracting females. Males that are more susceptible
to disease and parasites will have to use their
(25) carotenoids to boost their immune systems, whereas
males that are genetically resistant will use fewer
carotenoids for fighting disease and will advertise
this by using the pigments for flashy display instead.

题目：

The passage implies which of the following about the insects from which animals acquire carotenoids?

选项:

A、They do not produce carotenoids themselves.
B、They use carotenoids primarily for coloration.
C、They maintain constant levels of carotenoids in their tissues.
D、They are unable to use carotenoids to boost their immune system.
E、They are available in greater abundance than are carotenoid-bearing plants.

答案:

A
1答疑

[Table Analysis]

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文章：

The table lists 13 varieties of edible oils by smoke point, recommended heat, typical package size, and typical price for that package.

Heating an oil above its smoke point—the temperature at which the oil begins to smoke—can produce toxic fumes. To avoid this, different oils are recommended for use with different levels of heat:

  • No heat: use at room temperature or below
  • Low heat: use for baking
  • Medium heat: use for sautéing
  • High heat: use for frying

Oil Refined?

Smoke

point

(°C)

Recommended

heat

Package

size

(mL)

Price per

package

($)
Coconut no 190 high   250   8.00
Corn yes 210 high 1,000   6.50
Flaxseed no   49 no   473 18.00
Grape-seed yes 215 high   500 10.50
Olive, extra-virgin no 163 medium   200 13.00
Olive, light yes 225 high   750 12.00
Peanut yes 232 high   475   9.00
Pumpkin no 100 low   250 14.50
Safflower no 100 low   250 20.00
Sesame no 163 medium   500 14.00
Sunflower no 100 low   500   6.00
Sunflower yes 227 high 1,000   7.00
Walnut no 49 no   500   9.50

题目：

For each of the following statements about the oils in the table, select Yes if the statement accurately reflects the information above. Otherwise, select No.

选项:

A、The range of smoke points for the refined oils is greater than that for the unrefined oils.
B、The median price per package for the high-heat oils is less than that for the medium-heat oils.
C、The median package size for refined oils is greater than that for unrefined oils.

答案:

B A A
1答疑

[Reading Comprehension]

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文章：

    The Gross Domestic Product. (GDP), which measures the dollar value of finished goods and services produced by an economy during a given period, serves as the chief indicator of the economic well-being of the United States. The GDP assumes that the economic significance of goods and services lies solely in their price, and that these goods and services add to the national well-being, not because of any intrinsic value they may possess, but simply because they were produced and bought. Additionally, only those goods and services involved in monetary transactions are included in the GDP. Thus, the GDP ignores the economic utility of such things as a clean environment and cohesive families and communities, It is therefore not merely coincidental, since nationalpolicies in capitalist and noncapitalist countries alike are dependent on indicators such as the GDP, that both the environment and the social structure have been eroded in recent decades not only does the GDP mask this erosion, it can actually portray it as an economic gain: an oil spill off a coastal region "adds" to the GDP because it generates commercial activity. In short, the nation's central measure of economic well-being works like a calculating machine that adds but cannot subtract.

题目：

the passage implies that national policies that rely heavily on economic indicators such as the GDP tend to

选项:

A、become increasingly capitalistic in nature
B、disregard the economic importance of environmental and social factors that do not involve monetary transactions
C、overestimate the amount of commercial activity generated by environmental disasters
D、overestimate the economic significance of cohesive families and communities
E、assume that the economic significance of goods and services does not lie solely in the price of those goods and services

答案:

B
1答疑

[Multi-Source Reasoning]

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文章：

Article

    The expenses related to sponsoring a conference can be immense. An organization sponsoring a conference can recoup these expenses through registration fees and partnership with the host hotel. As part of the partnership, the host hotel sets aside a block of rooms for conference attendees, with rooms available at a slightly higher-than-normal rate.

    While most conference attendees prefer to stay in the host hotel, they often follow an alternate strategy to avoid the extra cost of reserving a room within the block at the host hotel. Some attendees reserve rooms outside the host hotel—the ROHH strategy. Others reserve rooms outside the block—the ROB strategy.

    Conference sponsors have succeeded in countering these strategies by increasing the conference registration fee by a fixed amount and then offering an equivalent registration fee discount to attendees who book rooms in the block. A study has shown that if this registration discount is equal to at least half the potential savings of an attendee's particular cost-saving strategy, the attendee is much more likely to reserve a room within the block.

Weekend Conferences

    Ten conferences are scheduled for the same weekend in City X. For each conference, the table lists the conference sponsor, the registration fee, the discounted registration fee (if any), the host hotel, the rate for rooms in the block at the host hotel, and the lowest rate for an available room in the host hotel during that same weekend. Conference attendees will require two nights lodging, and all room rates are per guest, per night, assuming two guests per room. The lowest rate for an available room in City X on this same weekend is S65.

题目：

6. Assume that all host hotels for the conferences in City X on the weekend indicated have conference block rooms available and that all hotels in City X have rooms available at their lowest rates for conference weekend. Which one of the following conferences is most likely to have attendees favoring the ROB strategy over the RPHH strategy.

选项:

A、AMG
B、CDA
C、QRTA
D、RCD
E、WWLOP

答案:

A
1答疑

[Data Sufficiency]

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题目：

A total of 20 amounts are entered on a spreadsheet that has 5 rows and 4 columns; each of the 20 positions in the spreadsheet contains one amount. The average (arithmetic mean) of the amounts in row i  is .The average of the amounts in column j  is .  What is the average of all 20 amounts on the spreadsheet?
(1)  
(2)  

选项:

答案:

D
1答疑

[Data Sufficiency]

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题目：

Is the number of members of Club X greater than the number of members of Club Y ?
(1)     Of the members of Club X, 20 percent are also members of Club Y.
(2)     Of the members of Club Y, 30 percent are also members of Club X.

选项:

答案:

C
1答疑

[Problem Solving]

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题目：

99,9992 –12 =

选项:

A、1010–2
B、(105 – 2)2
C、104(105 – 2)
D、105(104 – 2)
E、105(105 – 2)

答案:

E
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1156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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3294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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3643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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1212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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2779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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[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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1287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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304836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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311962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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