问答

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[Table Analysis]

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题目：

The Consumer Price Index (CPI) measures the average prices of goods and services purchased by consumers. In the United States, the CPI-U calculates the CPI for all urban consumers.
The CPI-U is calculated based on prices of food, clothing, shelter, fuels, transportation fares, charges for doctors' and dentists' services, drugs, and other goods and services that people buy for day-to-day living. All taxes directly associated with the purchase and use of items (such as, in the United States, sales taxes) are included in the index. An increase in CPI-U by a certain fractional amount means an increase by that fractional amount in overall prices within the relevant category.
For analyzing general price trends in the economy, seasonally adjusted prices are usually preferred over unadjusted prices because adjusting eliminates the effect of changes that normally occur at the same time and in about the same magnitude every year—such as price movements resulting from climatic conditions, production cycles, model changeovers, and holidays.

For each of the following, select Yes if the statement is inferable from the given information. Otherwise select No.

选项:

A、The changes in seasonally adjusted prices for used cars and trucks between March 2010 and September 2010 were in most cases less in magnitude than the changes in seasonally adjusted prices of new vehicles for the same period.
B、The seasonally adjusted CPI-U for all items was higher in March 2010 than in the previous month.
C、The seasonally unadjusted change in the price of new vehicles in August 2010 over the previous month was about the same as the seasonally unadjusted change in the price of food away from home over the same period.

答案:

B A B
1答疑

[Reading Comprehension]

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文章：

题目：

The phrase “a satellite orbiting a dominant male planet” (lines 41–42) refers most directly to

选项:

A、Cavendish’s concept that each woman is a sovereign self
B、the complete political and social isolation of absolute singularity
C、the immaterial world that a writer can create on paper
D、the absolute subordination of women in a patriarchal society
E、the metaphorical figure of the absolute monarch

答案:

D
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[Sentence Correction]

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题目：

As sources of electrical power, windmills now account for only about 2,500 megawatts nationwide, but production is almost expected to double by the end of the year, which would provide enough electricity for 1.3 million households.

选项:

A、almost expected to double by the end of the year, which would provide
B、almost expected that it will double by the end of the year, thus providing
C、expected that it will almost double by the end of the year to provide
D、expected almost to double by the end of the year and thus to provide
E、expected almost to double by the end of the year, which would thus be providing

答案:

D
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[Sentence Correction]

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题目：

The 32 species that make up the dolphin family are closely related to whales and in fact include the animal known as the killer whale, which can grow to be 30 feet long and is famous for its aggressive hunting pods.

选项:

答案:

A
1答疑

[Reading Comprehension]

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文章：

Line         Scientists long believed that two nerve clusters in
  the human hypothalamus, called suprachiasmatic
  nuclei (SCNs), were what controlled our circadian
  rhythms. Those rhythms are the biological cycles
(5) that recur approximately every 24 hours in
  synchronization with the cycle of sunlight and
  darkness caused by Earth’s rotation. Studies have
  demonstrated that in some animals, the SCNs
  control daily fluctuations in blood pressure, body
(10) temperature, activity level, and alertness, as well as
  the nighttime release of the sleep-promoting agent
  melatonin. Furthermore, cells in the human retina
  dedicated to transmitting information about light
  levels to the SCNs have recently been discovered.
(15)      Four critical genes governing circadian cycles
  have been found to be active in every tissue,
  however, not just the SCNs, of flies, mice, and
  humans. In addition, when laboratory rats that
  usually ate at will were fed only once a day, peak
(20) activity of a clock gene in their livers shifted by
  12 hours, whereas the same clock gene in the
  SCNs remained synchronized with light cycles. While
  scientists do not dispute the role of the SCNs in
  controlling core functions such as the regulation of
(25) body temperature and blood pressure, scientists
  now believe that circadian clocks in other organs
  and tissues may respond to external cues other than
  light—including temperature changes—that recur
  regularly every 24 hours.


题目：

The primary purpose of the passage is to

选项:

A、challenge recent findings that appear to contradict earlier findings
B、present two sides of an ongoing scientific debate
C、report answers to several questions that have long puzzled researchers
D、discuss evidence that has caused a long-standing belief to be revised
E、attempt to explain a commonly misunderstood biological phenomenon

答案:

D
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[Sentence Correction]

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题目：

The energy source on Voyager 2 is not a nuclear reactor, in which atoms are actively broken apart; rather a kind of nuclear battery that uses natural radioactive decay to produce power.

选项:

A、apart; rather
B、apart, but rather
C、apart, but rather that of
D、apart, but that of
E、apart; it is that of

答案:

B
1答疑

[Reading Comprehension]

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文章：

Line The fact that superior service can generate a
competitive advantage for a company does not
mean that every attempt at improving service will
create such an advantage. Investments in service,
(5) like those in production and distribution, must be
balanced against other types of investments on the
basis of direct, tangible benefits such as cost
reduction and increased revenues. If a company is
already effectively on a par with its competitors
(10) because it provides service that avoids a damaging
reputation and keeps customers from leaving at an
unacceptable rate, then investment in higher
service levels may be wasted, since service is a
deciding factor for customers only in extreme
(15) situations.
This truth was not apparent to managers of one
regional bank, which failed to improve its
competitive position despite its investment in
reducing the time a customer had to wait for a
(20) teller. The bank managers did not recognize the
level of customer inertia in the consumer banking
industry that arises from the inconvenience of
switching banks. Nor did they analyze their service
improvement to determine whether it would attract
(25) new customers by producing a new standard of
service that would excite customers or by proving
difficult for competitors to copy. The only merit of
the improvement was that it could easily be
described to customers.

题目：

The passage suggests which of the following about service provided by the regional bank prior to its investment in enhancing that service?

选项:

答案:

A
1答疑

[Table Analysis]

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题目：

The table summarizes information in several categories about the 9 stores in a small grocery chain. The table also includes chain-wide averages where appropriate.
For each of the following statements, select True if the statement can be verified to be true based on the information provided. Otherwise, select False.

选项:

A、In each store whose average customer age falls between 34 and 36, the number of self-check express lanes is above average.
B、There is a negative correlation between the number of self-check unlimited lanes and the average customer age.
C、Stores in this table that have fewer self-check express lanes than the chain-wide average are less likely to have restaurants than stores that have more self-check express lanes than the chain-wide average.

答案:

A A B
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[Problem Solving]

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题目：

In an electric circuit, two resistors with resistances x and y are connected in parallel. In this case, if r is the combined resistance of these two resistors, then the reciprocal of r is equal to the sum of the reciprocals of x and y. What is r in terms of x and y ?

选项:

A、xyx+y
B、
C、
D、

答案:

D
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[Critical Reasoning]

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题目：

For over two centuries, no one had been able to make Damascus blades—blades with a distinctive serpentine surface pattern—but a contemporary sword maker may just have rediscovered how. Using iron with trace impurities that precisely matched those present in the iron used in historic Damascus blades, this contemporary sword maker seems to have finally hit on an intricate process by which he can produce a blade indistinguishable from a true Damascus blade.

Which of the following, if true, provides the strongest support for the hypothesis that trace impurities in the iron are essential for the production of Damascus blades?

选项:

答案:

D
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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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3252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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3606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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2747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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1888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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[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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302259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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309386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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