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题目：

Archaeologists in Egypt have excavated a 5,000-year-old wooden hull that is the earliest surviving example of a "built" boat--in other words, a boat constructed out of planks fitted together--and that thus represents a major advance, in terms of boat-building technology, over the dugout logs and reed vessels of more ancient vintage.
 

选项:

A、 together--and that thus represents
B、 together--and this has represented
C、 together, and it represents
D、 together that was representing
E、 together to represent

答案:

A
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[Critical Reasoning]

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In Brindon County, virtually all of the fasteners—such as nuts, bolts, and screws—used by workshops and manufacturing firms have for several years been supplied by the Brindon Bolt Barn, a specialist wholesaler.  In recent months many of Brindon County's workshops and manufacturing firms have closed down, and no new ones have opened.  Therefore, the Brindon Bolt Barn will undoubtedly show a sharp decline in sales volume and revenue for this year as compared to last year.
 
The argument depends on assuming which of the following?
愠

选项:

A、Last year the Brindon Bolt Barn's sales volume and revenue were significantly higher than they had been the previous year.
B、The workshops and manufacturing firms that have remained open have a smaller volume of work to do this year than they did last year.
C、Soon the Brindon Bolt Barn will no longer be the only significant supplier of fasteners to Brindon County's workshops.
D、The Brindon Bolt Barn's operating expenses have not increased this year.
E、The Brindon Bolt Barn is not a company that gets the great majority of its business from customers outside Brindon County.

答案:

E
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[Data Sufficiency]

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题目：

The annual rent collected by a corporation from a certain building was x percent more in 1998 than in 1997 and y percent less in 1999 than in 1998.  Was the annual rent collected by the corporation from the building more in 1999 than in 1997?

选项:

答案:

B
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The number of plant and animal species that humans are known to have forced to extinction in the last half millennium is over 800.

选项:

A、humans are known to have forced to extinction
B、humans are known as having forced to become extinct
C、humans are known for forcing to become extinct
D、are known that humans forced to become extinct
E、are known as having been forced to extinction by humans

答案:

A
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Finally reaching a decision on an issue that has long been politically charged
in the Pacific Northwest, politicians decided to postpone by at least five years
an ambitious plan to protect wild salmon and other endangered fish, instead
of which they proposed a series of smaller steps, by which they intend to
protect the fish.

选项:

A、politicians decided to postpone by at least five years an ambitious plan to protect wild salmon and other endangered fish, instead of which they proposed a series of smaller steps, by which they intend
B、politicians decided to postpone by at least five years an ambitious plan to protect wild salmon and other endangered fish, proposing instead a series of smaller steps intended.
C、politicians decided to postpone by at least five years an ambitious plan for protecting wild salmon and other endangered fish, and instead they proposed a series of smaller steps, intending.
D、an ambitious plan to protect wild salmon and other endangered fish was postponed by politicians, who instead proposed a series of smaller steps, intending.
E、an ambitious plan to protect wild salmon and other endangered fish has been postponed by politicians, proposing instead a series of smaller steps intended.

答案:

B
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[Data Sufficiency]

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题目：

The table above shows the results of a survey of 100 voters each responded "favorable" or "unfavorable" or "not sure" when asked about their impressions of candidate M and of candidate N.  What was the number of voters who responded "favorable" for both candidates?
(1)   The number of voters who did not respond "favorable" for either candidate was 40.
(2)     The number of voters who responded "unfavorable" for both candidates was 10.
                  

选项:

答案:

A
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[Critical Reasoning]

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题目：

Which of the following most logically completes the argument?

By competing with rodents for seeds, black ants help control rodent populations that pose a public health risk. However, a very aggressive species of black ant, the Loma ant, which has recently invaded a certain region, has a venomous sting that is often fatal to humans. Therefore, the planned introduction into that region of ant flies, which prey on Loma ants, would benefit public health, since ________.

选项:

A、ant flies do not attack black ants other than Loma ants
B、Loma ants are less effective than many bird species in competing with rodents for seeds
C、certain other species of black ants are more effective than Loma ants in competing with rodents for seeds
D、the sting of Loma ants can also be fatal to rodents
E、some pesticides that could be used to control Loma ants are harmful to the environment

答案:

A
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[Critical Reasoning]

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The city of Workney, in raising bus fares from $1.00 to $1.25, proposed that 18 fare tokens be sold for $20.00 to alleviate the extra burden of the fare increase on the city's low-income residents.  Critics suggested alternatively that 9 fare tokens be sold for $10.00, because a $20.00 outlay would be prohibitive for low-income riders.
 
The alternative proposal depends on which of the following assumptions?

选项:

A、Low-income residents of Workney will continue to ride the buses in the same numbers despite the fare increase.
B、Low-income riders would be more likely to take advantage of the savings afforded by the 9-token offer than would other riders.
C、The outlay of $10.00 for the purchase of 9 fare tokens would not be prohibitive for low-income bus riders.
D、The proposed fare increase is needed for the purchase of new buses for the city's bus system.
E、Buses provide the only means of public transportation in the city of Workney.

答案:

C
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With the patience of its customers and with its network strained to the breaking point, the on-line service company announced a series of new initiatives trying to relieve the congestion that has led to at least four class-action lawsuits and thousands of complaints from frustrated customers.

选项:

A、the patience of its customers and with its network strained to the breaking point, the on-line service company announced a series of new initiatives trying to relieve
B、the patience of its customers and its network strained to the breaking point, the on-line service company announced a series of new initiatives that try to relieve
C、its network and the patience of its customers strained to the breaking point, the on-line service company announced a series of new initiatives to try to relieve
D、its network and with the patience of its customers strained to the breaking point, the on-line service company announced a series of initiatives to try relieving
E、its network and its customers’ patience strained to the breaking point, the on-line service company announced a series of new initiatives to try relieving

答案:

C
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Regulators are likely to end what are, in effect, long-standing exemptions permitting pilots of small turboprop aircraft at small carriers to fly as much as 20 percent more hours per month than pilots at larger airlines fly, with the consequence that some carriers could be forced to hire additional pilots.

选项:

A、as much as 20 percent more hours per month than pilots at larger airlines fly, with the consequence that
B、as many as 20 percent more hours per month as pilots at larger airlines, and
C、more hours per month, as much as 20 percent, than pilots at larger airlines; consequently
D、as much as 20 percent more hours per month as larger airlines' pilots, so
E、as many as 20 percent more hours per month than pilots at larger airlines do, and consequently

答案:

E
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[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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[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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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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[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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[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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[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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