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题目：

A recent report determined that although only three percent of drivers on Maryland highways equipped their vehicles with radar detectors, thirty-three 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.
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.
B、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.
C、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.
D、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.
E、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
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题目：

Which of the following most logically completes the argument?

Sviatovin is a medieval Moringian text whose author and exact date of composition are unknown. However, the events in the life of Prince Sviatov that the text describes occurred in 1165, and in the diagram of Sviatov's family that accompanies the text his father, who died in 1167, is identified as still living. Thus Sviatovin must have been written between 1165 and 1167, assuming that

选项:

A、the life of Prince Sviatov is not the subject of any other medieval Moringian texts
B、the author of Sviatovin intended it to provide as accurate a report about Prince Sviatov's exploits as possible
C、the diagram accurately represents the composition of Sviatov's family at the time Sviatovin was written
D、Sviatovin is the earliest Moringian text whose composition can be dated to within a few years
E、Sviatovin was not written by Sviatov's father himself

答案:

C
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题目：

The English physician Edward Jenner found that if experimental subjects were deliberately infected with cowpox, which caused only a mild illness, they are immune from smallpox.

选项:

A、which caused only a mild illness, they are immune from
B、causing only a mild illness, they become immune from
C、which causes only a mild illness, they are immune to
D、causing only a mild illness, they became immune from
E、which caused only a mild illness, they would become immune to

答案:

E
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In Kravonia, the average salary for jobs requiring a college degree has always been higher than the average salary for jobs that do not require a degree.  Current enrollments in Kravonia's colleges indicate that over the next four years the percentage of the Kravonian workforce with college degrees will increase dramatically.  Therefore, the average salary for all workers in Kravonia is likely to increase over the next four years.
 
Which of the following is an assumption on which the argument depends?

选项:

A、Kravonians with more than one college degree earn more, on average, than do Kravonians with only one college degree.
B、The percentage of Kravonians who attend college in order to earn higher salaries is higher now than it was several years ago.
C、The higher average salary for jobs requiring a college degree is not due largely to a scarcity among the Kravonian workforce of people with a college degree.
D、The average salary in Kravonia for jobs that do not require a college degree will not increase over the next four years.
E、Few members of the Kravonian workforce earned their degrees in other countries.

答案:

C
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It is true of both men and women that those who marry as young adults live longer than those who never marry.  This dose not show that marriage causes people to live longer, since, as compared with other people of the same age, young adults who are about to get married have fewer of the unhealthy habits that can cause a person to have a shorter life, most notably smoking and immoderate drinking of alcohol.
 
Which of the following, if true, most strengthens the argument above?

选项:

A、Marriage tends to cause people to engage less regularly in sports that involve risk of bodily harm.
B、A married person who has an unhealthy habit is more likely to give up that habit than a person with the same habit who is unmarried.
C、A person who smokes is much more likely than a nonsmoker to marry a person who smokes at the time of marriage, and the same is true for people who drink alcohol immoderately.
D、Among people who marry as young adults, most of those who give up an unhealthy habit after marriage do not resume the habit later in life.
E、Among people who as young adults neither drink alcohol immoderately nor smoke, those who never marry live as long as those who marry.

答案:

E
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题目：

The state religion of ancient China, which came into existence at least as far back as the Han Dynasty (206 B.C. to A.D. 220) and perhaps as early as the Western Zhou Dynasty (1050 B.C. to 771 B.C.), allowed only emperors performing the ritual worship of heaven, perceiving them as special links between the earthly and celestial realms.

选项:

A、only emperors performing the ritual worship of heaven, perceiving them as
B、only emperors to perform the ritual worship of heaven, with the perception of them being
C、the ritual worship of heaven to be performed only by emperors, who were perceived as
D、the ritual worship of heaven, performed by emperors only, with the perception of them as
E、the ritual worship of heaven as performed by emperors only, who were perceived to be

答案:

C
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题目：

New items developed for automobiles in the 1997 model year included
a safer air bag , which, unlike previous air bags, eliminated the possibility
that a burst of smoke would appear when the bag inflated, and making an
already terrified passenger think the car was on fire.

选项:

A、inflated, and making.
B、inflated, so that it could make.
C、inflated and made.
D、inflated and make.
E、inflated to make.

答案:

D
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As Charles Darwin observed, natural selection operates whenever individuals of one genetic composition are better at reproducing than that of others.

选项:

A、that of others
B、the other
C、another
D、those of another
E、that of the next

答案:

D
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Cognitive scientist: Using the pioneering work of comparative psychologist Gordon Gallup as a model, several studies have investigated animals’ capacity for mirror self-recognition (MSR). Most animals exposed to a mirror respond only with social behavior, such as aggression. However, in the case of the great apes, repeated exposure to mirrors leads to self-directed behaviors, such as exploring the inside of the mouth, suggesting that these animals recognize the reflection as an image of self. The implication of these studies is that the great apes have a capacity for self-awareness unique among nonhuman species.

The cognitive scientist makes which of the following assumptions in the argument above?

选项:

A、Gallup's work has established that the great apes have a capacity for MSR unique among nonhuman species.
B、If an animal does not have the capacity for MSR, it does not have the capacity for self-awareness.
C、If a researcher exposes an animal to a mirror and that animal exhibits social behavior, that animal is incapable of being self-aware.
D、When exposed to a mirror, all animals display either social behavior or self-directed behavior.
E、Animals that do not exhibit MSR may demonstrate a capacity for self-awareness in other ways.

答案:

B
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Although the first pulsar, or rapidly spinning collapsed star, to be sighted was in the summer of 1967 by graduate student Jocelyn Bell, it had not been announced until February, 1968.

选项:

A、Although the first pulsar, or rapidly spinning collapsed star, to be sighted was in the summer of 1967 by graduate student Jocelyn Bell, it had not been announced until February, 1968.
B、Although not announced until February, 1968, in the summer of 1967 graduate student Jocelyn Bell observed the first pulsar, or rapidly spinning collapsed star, to be sighted.
C、Although observed by graduate student Jocelyn Bell in the summer of 1967, the discovery of the first sighted pulsar, or rapidly spinning collapsed star, had not been announced before February, 1968.
D、The first pulsar, or rapidly spinning collapsed star, to be sighted was observed in the summer of 1967 by graduate student Jocelyn Bell, but the discovery was not announced until February, 1968.
E、The first sighted pulsar, or rapidly spinning collapsed star, was not announced until February, 1968, while it was observed in the summer of 1967 by graduate student Jocelyn Bell.

答案:

D
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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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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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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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