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[Sentence Correction]

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题目：

Twenty-two feet long and 10 feet in diameter, the AM-1 is one of the many new satellites that is a part of 15 years effort of subjecting the interactions of Earth's atmosphere, oceans, and land surfaces to detailed scrutiny from space.

选项:

A、satellites that is a part of 15 years effort of subjecting the interactions of Earth's atmosphere, oceans, and land surfaces
B、satellites, which is a part of a 15-year effort to subject how Earth's atmosphere, oceans, and land surfaces interact
C、satellites, part of 15 years effort of subjecting how Earth's atmosphere, oceans, and land surfaces are interacting
D、satellites that are part of an effort for 15 years that has subjected the interactions of Earth's atmosphere, oceans, and land surfaces
E、satellites that are part of a 15-year effort to subject the interactions of Earth's atmosphere, ocean, and land surfaces

答案:

E
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题目：

Paleontologist Stephen Jay Gould has argued that many biological traits are not the products of natural selection, favored due to their enhancement of reproduction or survival, but that they are simply random by-products of other evolutionary developments.

选项:

A、 due to their enhancement of reproduction or survival, but that they are
B、 due to the reproduction or survival they enhance, but they are
C、 because they enhance reproduction or survival, but
D、 because they enhance reproduction or survival, but are
E、 because of enhancing reproduction or survival, but are

答案:

D
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题目：

At the end of 2001, motion picture industry representatives said that there were about a million copies of Hollywood movies available online and expected piracy to increase with high-speed Internet connections that become more widely available.

选项:

A、online and expected piracy to increase with high-speed Internet connections that become more widely available
B、online and expect the increase of piracy with the wider availability of high-speed Internet connections
C、online, and they expect more piracy to increase with the wider availability of high-speed Internet connections
D、online, and that they expected the increase of piracy as high-speed Internet connections would become more widely available
E、online, and that they expected piracy to increase as high-speed Internet connections became more widely available

答案:

E
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题目：

Yellow jackets number among the 900 or so species of the world's social wasps, wasps living in a highly cooperative and organized society where they consist almost entirely of females—the queen and her sterile female workers.

选项:

A、wasps living in a highly cooperative and organized society where they consist almost entirely of
B、wasps that live in a highly cooperative and organized society consisting almost entirely of
C、which means they live in a highly cooperative and organized society, almost all
D、which means that their society is highly cooperative, organized, and it is almost entirely
E、living in a society that is highly cooperative, organized, and it consists of almost all

答案:

B
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[Critical Reasoning]

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题目：

Finding of a survey of Systems magazine subscribers:  Thirty percent of all merchandise orders placed by subscribers in response to advertisements in the magazine last year were placed by subscribers under age thirty-five.
 
Finding of a survey of advertisers in Systems magazine:  Most of the merchandise orders placed in response to advertisements in Systems last year were placed by people under age thirty-five.
 
For both of the findings to be accurate, which of the following must be true?

选项:

A、More subscribers to Systems who have never ordered merchandise in response to advertisements in the magazine are age thirty-five or over than are under age thirty-five.
B、Among subscribers to Systems, the proportion who are under age thirty-five was considerably lower last year than it is now.
C、Most merchandise orders placed in response to advertisements in Systems last year were placed by Systems subscribers over age thirty-five.
D、Last year, the average dollar amount of merchandise orders placed was less for subscribers under age thirty-five than for those age thirty-five or over.
E、Last year many people who placed orders for merchandise in response to advertisements in Systems were not subscribers to the magazine.

答案:

E
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题目：

Today's technology allows manufacturers to make small cars more fuel-efficient now than at any time in their production history.

选项:

A、small cars more fuel-efficient now than at any time in their
B、small cars that are more fuel-efficient than they were at any time in their
C、small cars that are more fuel-efficient than those at any other time in
D、more fuel-efficient small cars than those at any other time in their
E、more fuel-efficient small cars now than at any time in

答案:

C
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题目：

Although fullerenes--spherical molecules made entirely of carbon--were first found in the laboratory, they have since been found in nature, formed in fissures of the rare mineral shungite.  Since laboratory synthesis of fullerenes requires distinctive conditions of temperature and pressure, this discovery should give geologists a test case for evaluating hypotheses about the state of the Earth's crust at the time these naturally occurring fullerenes were formed.
 
Which of the following, if true, most seriously undermines the argument?

选项:

A、Confirming that the shungite genuinely contained fullerenes took careful experimentation.
B、Some fullerenes have also been found on the remains of a small meteorite that collided with a spacecraft.
C、The mineral shungite itself contains large amounts of carbon, from which the fullerenes apparently formed.
D、The naturally occurring fullerenes are arranged in a previously unknown crystalline structure.
E、Shungite itself is formed only under distinctive conditions.

答案:

D
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题目：

Almost like clones in their similarity to one another, the cheetah species’ homogeneity makes them especially vulnerable to disease.

选项:

A、the cheetah species’ homogeneity makes them especially vulnerable to disease
B、the cheetah species is especially vulnerable to disease because of its homogeneity
C、the homogeneity of the cheetah species makes it especially vulnerable to disease
D、homogeneity makes members of the cheetah species especially vulnerable to disease
E、members of the cheetah species are especially vulnerable to disease because of their homogeneity

答案:

E
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[Reading Comprehension]

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文章：

    Earth's surface consists of rigid plates that are constantly shifting and jostling one another. Plate movements are the surface expressions of motions in the mantle—the thick shell of rock that lies between Earth's crust and its metallic core. Although the hot rock of the mantle is a solid, under the tremendous pressure of the crust and overlying rock of the mantle, it flows like a viscous liquid. The mantle's motions, analogous to those in a pot of boiling water, cool the mantle by carrying hot material to the surface and returning cooler material to the depths. When the edge of one plate bends under another and its cooler material is consumed in the mantle, volcanic activity occurs as molten lava rises from the downgoing plate and erupts through the overlying one.

    Most volcanoes occur at plate boundaries. However, certain "misplaced" volcanoes far from plate edges result from a second, independent mechanism that cools the deep interior of Earth. Because of its proximity to Earth's core, the rock at the base of the mantle is much hotter than rock in the upper mantle. The hotter the mantle rock is, the less it resists flowing. Reservoirs of this hot rock collect in the base of the mantle. When a reservoir is sufficiently large, a sphere of this hot rock forces its way up through the upper mantle to Earth's surface, creating a broad bulge in the topography. The "mantle plume" thus formed, once established, continues to channel hot material from the mantle base until the reservoir is emptied. The surface mark of an established plume is a hot spot—an isolated region of volcanoes and uplifted terrain located far from the edge of a surface plate. Because the source of a hot spot remains fixed while a surface plate moves over it, over a long period of time an active plume creates a chain of volcanoes or volcanic islands, a track marking the position of the plume relative to the moving plate. The natural history of the Hawaiian island chain clearly shows the movement of the Pacific plate over a fixed plume.

题目：

It can be inferred from the passage that a chain of volcanoes created by a mantle plume would most likely be characterized by
             
 

选项:

A、a curved outline
B、constituent volcanoes that differ from each other in age
C、occurrence near a plate boundary where one plate bends under another
D、appearance near many other volcanic chains
E、rocks with a wide range of chemical composition

答案:

B
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[Critical Reasoning]

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题目：

Manufacturers sometimes discount the price of a product to retailers for a promotion period when the product is advertised to consumers.  Such promotions often result in a dramatic increase in amount of product sold by the manufacturers to retailers.  Nevertheless, the manufacturers could often make more profit by not holding the promotions.
 
Which of the following, if true, most strongly supports the claim above about the manufacturers' profit?

选项:

A、The amount of discount generally offered by manufacturers to retailers is carefully calculated to represent the minimum needed to draw consumers' attention to the product.
B、For many consumer products the period of advertising discounted prices to consumers is about a week, not sufficiently long for consumers to become used to the sale price.
C、For products that are not newly introduced, the purpose of such promotions is to keep the products in the minds of consumers and to attract consumers who are currently using competing products.
D、During such a promotion retailers tend to accumulate in their warehouses inventory bought at discount; they then sell much of it later at their regular price.
E、If a manufacturer fails to offer such promotions but its competitor offers them, that competitor will tend to attract consumers away from the manufacturer's product.

答案:

D
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[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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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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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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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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[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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