问答

1答疑

[Sentence Correction]

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题目：

Carbon dioxide, which traps heat in the atmosphere and helps regulate the planet's surface temperature, is constantly being exchanged between the atmosphere on the one hand and the oceans and terrestrial plants on the other.

选项:

答案:

A
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[Critical Reasoning]

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题目：

In order to reduce the number of items damaged while in transit to customers, packaging consultants recommended that the TrueSave mail-order company increase the amount of packing material so as to fill any empty spaces in its cartons.  Accordingly, TrueSave officials instructed the company's packers to use more packing material than before, and the packers zealously acted on these instructions and used as much as they could.  Nevertheless, customer reports of damaged items rose somewhat.
 
Which of the following, if true, most helps to explain why acting on the consultants' recommendation failed to achieve its goal?

选项:

A、The change in packing policy led to an increase in expenditure on packing material and labor.
B、When packing material is compressed too densely, it loses some of its capacity to absorb shock.
C、The amount of packing material used in a carton does not significantly influence the ease with which a customer can unpack the package.
D、Most of the goods that TrueSave ships are electronic products that are highly vulnerable to being damaged in transit.
E、TrueSave has lost some of its regular customers as a result of the high number of damaged items they received.

答案:

B
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[Critical Reasoning]

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文章：

A recent report determined that although only 3 percent of drivers on Maryland highways equipped their vehicles with radar detectors, 33 percent of all vehicles ticketed for exceeding the speed limit were equipped with them. Clearly, drivers who equip their vehicles with radar detectors are more likely to exceed the speed limit regularly than are drivers who do not.

题目：

The conclusion drawn above depends on which of the following assumptions?

选项:

A、Drivers who equip their vehicles with radar detectors are less likely to be ticketed for exceeding the speed limit than are drivers who do not. Drivers who are ticketed for exceeding the speed limit are more likely to exceed the speed limit regularly than are drivers who are not ticketed. 
B、The number of vehicles that were ticketed for exceeding the speed limit was greater than the number of vehicles that were equipped with radar detectors. 
C、Many of the vehicles that were ticketed for exceeding the speed limit were ticketed more than once in the time period covered by the report.
D、Drivers on Maryland highways exceeded the speed limit more often than did drivers on other state highways not covered in the report.

答案:

B
1答疑

[Data Sufficiency]

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题目：

A citrus fruit grower receives $15 for each crate of oranges shipped and $18 for each crate of grapefruit shipped. How many crates of oranges did the grower ship last week?
(1)Last week the number of crates of oranges that the grower shipped was 20 more than twice the number of crates of grapefruit shipped.
(2)Last week the grower received a total of $38,700 from the crates of oranges and grapefruit shipped.

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
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[Data Sufficiency]

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题目：

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:

E
1答疑

[Reading Comprehension]

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题目：

According to the passage, a foreman in a United States auto company differed from a foreman in a Japanese auto company in that the foreman in the United States would

选项:

A、not have been a member of an auto workers' union
B、have been unlikely to support the goals of company management
C、have been able to control production processes to a large extent
D、have experienced greater stress
E、have experienced less conflict with workers

答案:

A
1答疑

[Data Sufficiency]

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题目：

Lines n and p lie in the xy-plane. Is the slope of line n less than the slope of line p ?
(1) Lines n and p intersect at the point (5,1).
(2) The y-intercept of line n is greater than the y-intercept of line p.

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
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[Critical Reasoning]

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题目：

Infotek, a computer manufacturer in Katrovia, has just introduced a new personal computer model that sells for significantly less than any other model. Market research shows, however, that very few Katrovian households without personal computers would buy a computer, regardless of its price. Therefore, introducing the new model is unlikely to increase the number of computers in Katrovian homes.

Which of the following is an assumption on which the argument depends?

选项:

A、Infotek achieved the lower price of the new model by using components of lower quality than those used by other manufacturers.
B、The main reason cited by consumers in Katrovia for replacing a personal computer is the desire to have an improved model.
C、Katrovians in households that already have computers are unlikely to purchase the new Infotek model as an additional computer for home use.
D、The price of other personal computers in Katrovia is unlikely to drop below the price of Infotek’s new model in the near future.
E、Most personal computers purchased in Katrovia are intended for home use.

答案:

C
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[Sentence Correction]

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题目：

Government officials announced that restrictions on the use of water would continue because no appreciative increase in the level of the river resulted from the intermittent showers that had fallen throughout the area the day before.

选项:

A、
A. restrictions on the use of water would continue because no appreciative increase in the level of the river
B、
B. restricting the use of water would continue because there had not been any appreciative increase in the river's level that
C、
C. the use of water would continue to be restricted because not any appreciable increase in the river's level had
D、
D. restrictions on the use of water would continue because no appreciable increase in the level of the river had
E、
E. using water would continue being restricted because not any appreciable increase in the level of the river

答案:

D
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[Problem Solving]

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题目：

If there are fewer than 8 zeros between the decimal point and the first nonzero digit in the decimal expansion of , which of the following numbers could be the value of t ?
  1. 3
  2. 5
  3. 9

选项:

A、None
B、I only
C、II only
D、III only
E、II and III

答案:

A
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362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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1332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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1510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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583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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1349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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961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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643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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653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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[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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161045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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