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题目：

The two oil companies agreed to merge their refining and marketing operations in the Midwest and the West, forming a new company for controlling nearly fifteen percent of the nation's gasoline sales.

选项:

A、forming a new company for controlling
B、forming a new company that would control
C、which would form a new company that controlled
D、which formed a new company for controlling
E、which formed a new company that would control

答案:

B
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题目：

By sucking sap from the young twigs of the hemlock tree, tree growth is retarded by the woolly adelgid, causing needles to change color from deep green to grayish green and to drop prematurely.

选项:

A、tree growth is retarded by the woolly adelgid, causing needles to change color from deep green to grayish green and to drop
B、tree growth is retarded by the woolly adelgid, and this causes the color of needles to change from deep green to grayish green, and their dropping
C、the woolly adelgid retards tree growth, which causes needles to change color from deep green to grayish green, and dropping
D、the woolly adelgid retards tree growth, causing needles to change color from deep green to grayish green and to drop
E、the woolly adelgid retards tree growth, and this causes the color of needles to change from deep green to grayish green, and then their dropping

答案:

D
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[Critical Reasoning]

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题目：

Magazine Publisher:  Our magazine does not have a liberal bias.  It is true that when a book review we had commissioned last year turned out to express distinctly conservative views, we did not publish it until we had also obtained a second review that took a strongly liberal position.  Clearly, however, our actions demonstrate not a bias in favor of liberal views but rather a commitment to a balanced presentation of diverse opinions.
 
Determining which of the following would be most useful in evaluating the cogency of the magazine publisher's response?

选项:

A、Whether any other magazines in which the book was reviewed carried more than one review of the book
B、Whether the magazine publishes unsolicited book reviews as well as those that it has commissioned
C、Whether in the event that a first review commissioned by the magazine takes a clearly liberal position the magazine would make any efforts to obtain further reviews
D、Whether the book that was the subject of the two reviews was itself written from a clearly conservative or a clearly liberal point of view
E、Whether most of the readers of the magazine regularly read the book reviews that the magazine publishes

答案:

C
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题目：

Excavation of the house of a third-century Camarnian official revealed that he had served four magistrates—public officials who administer the law—over his thirty-year public career, in four provincial capital cities. However, given the Camarnian administrative system of that era, it is unclear whether he served them simultaneously, as a traveling administrator living for part of the year in each provincial capital, or else did so sequentially, leaving one magistrate after several years to join another.

Which of the following would, if found in the excavation, most likely help reveal the pattern of the official's administrative service?

选项:

A、Maps and documents describing each of the four provincial capitals
B、A cache of the official's documents related to work from early in his career
C、A set of cups of a type made only in the city of the first magistrate whom the official is known to have served
D、Several pieces of furniture in the styles of two of the provincial capital cities
E、Heavy clothing appropriate only for the coldest of the four cities

答案:

B
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题目：

Scientists claim that the discovery of the first authenticated mammal bones in amber could provide important clues of determining, in addition to how, when mammals colonized the islands of the West Indies.

选项:

A、of determining, in addition to how, when mammals colonized the islands of the West Indies
B、in the determination of how and when the islands of the West Indies were colonized by mammals
C、to determine how mammals colonized the islands of the West Indies and when they did
D、for determining when the islands of the West Indies were colonized by mammals and how they were
E、for determining how and when mammals colonized the islands of the West Indies

答案:

E
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题目：

If x is the product of the positive integers from 1 to 8, inclusive, and if i, k, m, and p are positive integers such that x =$${2}^{i}{3}^{k}{5}^{m}{7}^{p}$$, then i + k + m + p =

选项:

A、 4
B、 7
C、 8
D、 11
E、 12

答案:

D
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题目：

The list of animals that exhibits a preference of either using the right or the left hand (i.e., claw, paw, or foot) has been expanded to include the lower vertebrates.

选项:

A、 exhibits a preference of either using the right or the left hand (i.e., claw, paw, or foot) has been expanded to include
B、 exhibits the preference to use either the right or the left hand (i.e., claw, paw, or foot) has been expanded and includes
C、 exhibit a preference in either using the right or the left hand (i.e., claw, paw, or foot) has been expanded to include
D、 exhibit a preference for using either the right or the left hand (i.e., claw, paw, or foot) has been expanded to include
E、 exhibit the preference as to either using the right or the left hand (i.e., claw, paw, or foot) has been expanded and includes

答案:

D
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题目：

Scientists believe that unlike the males of most species of moth, the male whistling moths of Nambung, Australia, call female moths to them by the use of acoustical signals, but not olfactory ones, and they attract their mates during the day, rather than at night.

选项:

A、by the use of acoustical signals, but not olfactory ones, and they attract
B、by the use of acoustical signals instead of using olfactory ones, and attracting
C、by using acoustical signals, not using olfactory ones, and by attracting
D、using acoustical signals, rather than olfactory ones, and attract
E、using acoustical signals, but not olfactory ones, and attracting

答案:

D
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题目：

Unlike the nests of leaf cutters and most other ants, situated underground or in pieces of wood, raider ants make a portable nest by entwining their long legs to form “curtains” of ants that hang from logs or boulders, providing protection for the queen and the colony larvae and pupae.

选项:

A、the nests of leaf cutters and most other ants,
B、the nests of leaf cutters and most other ants, which are
C、leaf cutters and most other ants, whose nests are
D、leaf cutters and most other ants in having nests
E、those of leaf cutters and most other ants with nests

答案:

C
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题目：

To estimate the expansion rate of the universe is a notoriously difficult problem because there is a lack of a single yardstick that all distances can be measured by.

选项:

A、To estimate the expansion rate of the universe is a notoriously difficult problem because there is a lack of a single yardstick that all distances can be measured by.
B、Estimating the expansion rate of the universe is a notoriously difficult problem because there is no single yardstick by which all distances can be measured.
C、Because there is a lack of a single yardstick to measure all distances by, estimating the expansion rate of the universe is a notoriously difficult problem.
D、A notoriously difficult problem is to estimate the expansion rate of the universe because a single yardstick is lacking by which all distances can be measured.
E、It is a notoriously difficult problem to estimate the expansion rate of the universe because by no single yardstick can all distances be measured.

答案:

B
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1124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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3183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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3514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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1177浏览

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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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2693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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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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Analytical!
请问may老师，这题该用什么思路来做？
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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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