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题目：

The use of gravity waves, which do not interact with matter in the way electromagnetic waves do, hopefully will enable astronomers to study the actual formation of black holes and neutron stars.

选项:

A、in the way electromagnetic waves do, hopefully will enable
B、in the way electromagnetic waves do, will, it is hoped, enable
C、like electromagnetic waves, hopefully will enable
D、like electromagnetic waves, would enable, hopefully
E、such as electromagnetic waves do, will, it is hoped, enable

答案:

B
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题目：

According to public health officials, in 1998 Massachusetts became the first state in which more babies were born to women over the age of thirty than under it.

选项:

A、than  
B、than born  
C、than they were 
D、than there had been 
E、than had been born.

答案:

A
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[Data Sufficiency]

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题目：

How many different factors does the integer n have?
(1)   n = a4b3, where a and b are different positive prime numbers.
(2) The only positive prime numbers that are factors of n are 5 and 7.

选项:

答案:

A
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题目：

If a drug that is already on the market has the potential to help adults and children who have the same disease, or if it is widely used in children and the absence of labeling seems dangerous, the FDA can require that the drug undergo pediatric study.

选项:

A、that the drug undergo
B、that the drug undergoes
C、that the drug is to undergo
D、the drug undergoing
E、the drug to have to undergo

答案:

A
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[Critical Reasoning]

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题目：

Frobisher, a sixteenth-century English explorer, had soil samples from Canada's Kodlunarn Island examined for gold content.  Because high gold content was reported, Elizabeth I funded two mining expeditions.  Neither expedition found any gold there.  Modern analysis of the island's soil indicates a very low gold content.  Thus the methods used to determine the gold content of Frobisher's samples must have been inaccurate.
 
Which of the following is an assumption on which the argument depends?

选项:

A、The gold content of the soil on Kodlunarn Island is much lower today than it was in the sixteenth century.
B、The two mining expeditions funded by Elizabeth I did not mine the same part of Kodlunarn Island.
C、The methods used to assess gold content of the soil samples provided by Frobisher were different from those generally used in the sixteenth century.
D、Frobisher did not have soil samples from any other Canadian island examined for gold content.
E、Gold was not added to the soil samples collected by Frobisher before the samples were examined.

答案:

E
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[Critical Reasoning]

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题目：

Hollywood restaurant is replacing some of its standard tables with tall tables and stools. The restaurant already fills every available seat during its operating hours, and the change in seating arrangements will not result in an increase in the restaurant’s seating capacity. Nonetheless, the restaurant’s management expects revenue to increase as a result of the seating change without any concurrent change in menu, prices, or operating hours.

Which of the following, if true, provides the best reason for the expectation?

选项:

A、One of the taller tables takes up less floor space than one of the standard tables.
B、Diners seated on stools typically do not linger over dinner as long as diners seated at standard tables.
C、Since the restaurant will replace only some of its standard tables, it can continue to accommodate customers who do not care for the taller tables.
D、Few diners are likely to avoid the restaurant because of the new seating arrangement.
E、The standard tables being replaced by tall tables would otherwise have to be replaced with new standard tables at a greater expense.

答案:

B
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题目：

Turtles, like other reptiles, can endure long fasts, in their ability to survive on weekly or even monthly feedings; however, when food is readily available, they may eat frequently and grow very fat.

选项:

A、fasts, in their ability to survive
B、fasts, having their ability to survive
C、fasts, due to having the ability of surviving
D、fasts because they are able to survive
E、fasts because of having the ability of surviving

答案:

D
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[Critical Reasoning]

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题目：

In Stenland, many workers have been complaining that they cannot survive on minimum wage, the lowest wage an employer is permitted to pay. The government is proposing to raise the minimum wage. Many employers who pay their workers the current minimum wage argue that if it is raised, unemployment will increase because they will no longer be able to afford to employ as many workers.

Which of the following, if true in Stenland, most strongly supports the claim that raising the minimum wage there will not have the effects that the employers predict?

选项:

A、For any position with wages below a living wage, the difficulty of finding and retaining employees adds as much to employment costs as would raising wages.
B、Raising the minimum wage does not also increase the amount employers have to contribute in employee benefits.
C、When inflation is taken into account, the proposed new minimum wage is not as high as the current one was when it was introduced.
D、Many employees currently being paid wages at the level of the proposed new minimum wage will demand significant wage increases.
E、Many employers who pay some workers only the minimum wage also pay other workers wages that are much higher than the minimum.

答案:

A
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题目：

The army cutworm moth is a critical source of fat for as many as a third of Yellowstone National Park's grizzly bears; they overturn rocks to find them, as many as 40,000 per bear in a single day.

选项:

A、bears; they overturn rocks to find them, as many as
B、bears; overturning rocks to find the insects, up to
C、bears, overturning rocks to find them, as many as
D、bears, and they overturn rocks to find them, up to
E、bears, which overturn rocks to find the insects, as many as

答案:

E
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[Critical Reasoning]

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题目：

Jennifer: Video rental outlets in Centerville together handled 10,000 fewer video rentals in 1994 than in 1993. The decline in rentals was probably due almost entirely to the February 1994 opening of Videorama, the first and only video rental outlet in the area that, in addition to renting videos, also sold them cheaply.

Brad: There must be another explanation: as you yourself said, the decline was on the order of 10,000 rentals. Yet Videorama sold only 4,000 videos in 1994.

Which of the following, if true, would most seriously weaken the force of the objection that Brad presents to Jennifer's explanation?

选项:

A、In 1994 Videorama rented out more videos than it sold.
B、In 1994 two new outlets that rent but that do not sell videos opened in Centerville.
C、Most of the video rental outlets in Centerville rent videos at a discount on certain nights of the week.
D、People often buy videos of movies that they have previously seen in a theater.
E、People who own videos frequently loan them to their friends.

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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