问答

6答疑

[Reading Comprehension]

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文章：

    To compete effectively in international markets, a nation's businesses must sustain investment in intangible as well as physical assets. Although an enormous pool of investment capital exists in the United States, the country's capital investment practices put United States companies at a competitive disadvantage. United States capital investment practices, shaped by sporadic and unpredictable changes in tax policy and high federal budget deficits, encourage both underinvestment and overinvestment. For example, United States companies invest at a low rate in internal development projects, such as improving supplier relations, that do not offer immediate profit, and systematically invest at a high rate in external projects, such as corporate takeovers, that yield immediate profit. Also, United States companies make too few linkages among different forms of investments. Such linkages are important because physical assets, such as factories, may not reach their potential level of productivity unless companies make parallel investments in intangible assets such as employee training and product redesign. In general, unlike Japanese and German investment practices, which focus on companies' long-term interests, United States investment practices favor those forms of investment for which financial returns are most readily available. By making minimal investments in intangible assets, United States companies reduce their chances for future competitiveness.

题目：

According to the passage, which of the following characterizes the capital allocation strategy of United States companies?

选项:

A、They tend to underinvest in intangible assets.
B、They tend to invest heavily in product redesign.
C、They tend to underinvest in physical assets.
D、They make parallel investments in internal and external projects.
E、They seek to allocate capital in ways that reduce their tax burden.

答案:

A
6答疑

[Data Sufficiency]

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题目：

A total of $60,000 was invested for one year. Part of this amount earned simple annual interest at the rate of x  percent per year, and the rest earned simple annual interest at the rate of y  percent per year.  If the total interest earned by the $60,000 for that year was $4,080, what is the value of x ?
(1)  
(2)   The ratio of the amount that earned interest at the rate of x  percent per year to the amount that earned interest at the rate of y  percent per year was 3 to 2.

选项:

答案:

C
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[Sentence Correction]

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题目：

Approved April 24, 1800, the act of Congress that made provision for the removal of the government of the United States to the new federal city, Washington, D.C., also established the Library of Congress.

选项:

A、Approved April 24, 1800, the act of Congress that made provision for the removal of the government of the United States to the new federal city, Washington, D.C., also established
B、The act of Congress, which was approved April 24, 1800, making provision for the removal of the government of the United States to the new federal city, Washington, D.C., also established
C、The act of Congress approved April 24, 1800, which made provision for the removal of the government of the United States to the new federal city, Washington, D.C., and established
D、Approved April 24, 1800, making provision for the removal of the government of the United States to the new federal city, Washington, D.C., the act of Congress also established
E、Approved April 24, 1800, the act of Congress made provision for the removal of the government of the United States to the new federal city, Washington, D.C., also establishing

答案:

A
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[Sentence Correction]

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题目：

New genetic evidence—together with recent studies of elephants' skeletons, tusks, and other anatomical features—provide compelling support for classifying Africa's forest elephants and its savanna elephants as separate species.
㱥

选项:

A、provide compelling support for classifying
B、provide compelling support for the classification of
C、provides compelling support to the classification of
D、provides compelling support for classifying
E、provides compelling support to classify

答案:

D
6答疑

[Critical Reasoning]

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题目：

Which of the following most logically completes the argument?
 
A certain cultivated herb is one of a group of closely related plants that thrive in soil with high concentrations of metals that are toxic to most other plants.  Agronomists studying the herb have discovered that it produces large amounts of histidine, an amino acid that, in test-tube solutions, renders these metals chemically inert.  Possibly, therefore, the herb's high histidine production is what allows it to grow in metal-rich soils, a hypothesis that would gain support if ______.

选项:

A、histidine is found in all parts of the plant—roots, stem, leaves, and flowers
B、the herb's high level of histidine production is found to be associated with an unusually low level of production of other amino acids
C、others of the closely related group of plants are also found to produce histidine in large quantities
D、cultivation of the herb in soil with high concentrations of the metals will, over an extended period, make the soil suitable for plants to which the metals are toxic
E、the concentration of histidine in the growing herb declines as the plant approaches maturity

答案:

C
6答疑

[Critical Reasoning]

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题目：

Nitrogen dioxide is a pollutant emitted by automobiles.  Catalytic converters, devices designed to reduce nitrogen dioxide emissions, have been required in all new cars in Donia since 1993, and as a result, nitrogen dioxide emissions have been significantly reduced throughout most of the country.  Yet although the proportion of new cars in Donia's capital city has always been comparatively high, nitrogen dioxide emissions there have showed only an insignificant decline since 1993.
 
Which of the following, if true, most helps to explain the insignificant decline in nitrogen dioxide emissions in Donia's capital city?

选项:

A、More of the cars in Donia's capital city were made before 1993 than after 1993.
B、The number of new cars sold per year in Donia has declined slightly since 1993.
C、Pollutants other than nitrogen dioxide that are emitted by automobiles have also been significantly reduced in Donia since 1993.
D、Many Donians who own cars made before 1993 have had catalytic converters installed in their cars.
E、Most car trips in Donia's capital city are too short for the catalytic converter to reach its effective working temperature.

答案:

E
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[Critical Reasoning]

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题目：

From 1978 to 1988, beverage containers accounted for a steadily decreasing percentage of the total weight of household garbage in the United States.  The increasingly widespread practice of recycling aluminum and glass was responsible for most of this decline.  However, although aluminum recycling was more widely practiced in this period than glass recycling, it was found that the weight of glass bottles in household garbage declined by a greater percentage than the weight of aluminum cans.
 
Which of the following, if true of the United States in the period 1978 to 1988, most helps to account for the finding?

选项:

A、Glass bottles are significantly heavier than aluminum cans of comparable size.
B、Recycled aluminum cans were almost all beverage containers, but a significant fraction of the recycled glass bottles had contained products other than beverages.
C、Manufacturers replaced many glass bottles, but few aluminum cans, with plastic containers.
D、The total weight of glass bottles purchased by households increased at a slightly faster rate than the total weight of aluminum cans.
E、In many areas, glass bottles had to be sorted by color of the glass before being recycled, whereas aluminum cans required no sorting.

答案:

C
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[Sentence Correction]

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题目：

A surge in new home sales and a drop in weekly unemployment claims suggest that the economy might not be as weak as some analysts previously thought.

选项:

A、claims suggest that the economy might not be as weak as some analysts previously thought
B、claims suggests that the economy might not be so weak as some analysts have previously thought
C、claims suggest that the economy might not be as weak as have been previously thought by some analysts
D、claims, suggesting about the economy that it might not be so weak as previously thought by some analysts
E、claims, suggesting the economy might not be as weak as previously thought to be by some analysts

答案:

A
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[Problem Solving]

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题目：

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?

选项:

A、100% decrease
B、50% decrease
C、40% decrease
D、40% increase
E、50% increase

答案:

D
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[Sentence Correction]

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题目：

Authoritative parents are more likely than permissive parents to have children who as adolescents are self-confident, high in self-esteem, and responsibly independent.

选项:

A、Authoritative parents are more likely than permissive parents to have children who as adolescents are self-confident, high in self-esteem, and responsibly independent.
B、Authoritative parents who are more likely than permissive parents to have adolescent children that are self-confident, high in self-esteem, and responsibly independent.
C、Children of authoritative parents, rather than permissive parents, are the more likely to be self-confident, have a high self-esteem, and to be responsibly independent as adolescents.
D、Children whose parents are authoritative rather than being permissive, are more likely to have self-confidence, a high self-esteem, and be responsibly independent when they are an adolescent.
E、Rather than permissive parents, the children of authoritative parents are the more likely to have self-confidence, a high self-esteem, and to be responsibly independent as an adolescent.

答案:

A
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321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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370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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303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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665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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577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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384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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401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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85651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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[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
1评分
94695浏览

[Undefined]

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Analytical!
请问老师，这道题为什么second part是”evidence”? 还有、不确定First part到底是background info还是premise?
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