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[Sentence Correction]

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题目：

From studies of the bony house of the brain, which is the cranium, located in the back of the skull, come what scientists know about dinosaur brains.

选项:

A、From studies of the bony house of the brain, which is the cranium, located in the back of the skull, come what scientists know about dinosaur brains.
B、The knowledge that scientists know about dinosaur brains comes from studies of the bony house of the brain, located in the back of the skull, that is, the cranium.
C、The knowledge of dinosaur brains that scientists have come from studies of the bony house of the brain, which is located in the back of the skull and is called the cranium.
D、What scientists know about dinosaur brains comes from studies of the cranium, the bony house of the brain located in the back of the skull.
E、Located in the back of the skull is the cranium, the bony house of the brain, and it is from studies of this that scientists know what they know about dinosaur brains.

答案:

D
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[Reading Comprehension]

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文章：

    Linda Kerber argued in the mid-1980's that after the American Revolution (1775-1783), an ideology of "republican motherhood" resulted in a surge of educational opportunities for women in the United States. Kerber maintained that the leaders of the new nation wanted women to be educated in order to raise politically virtuous sons. A virtuous citizenry was considered essential to the success of the country's republican form of government; virtue was to be instilled not only by churches and schools, but by families, where the mother's role was crucial. Thus, according to Kerber, motherhood became pivotal to the fate of the republic, providing justification for an unprecedented attention to female education.

    Introduction of the republican motherhood thesis dramatically changed historiography. Prior to Kerber's work, educational historians barely mentioned women and girls; Thomas Woody's 1929 work is the notable exception. Examining newspaper advertisements for academies. Woody found that educational opportunities increased for both girls and boys around 1750. pointing to "An Essay on Woman" (1753) as reflecting a shirt in view. Woody also claimed that practical education for females had many advocates before the Revolution, Woody's evidence challenges the notion that the Revgolution changed attiludes regarding female education, although it may have accelerated earlier trends. Historians' reliance on Kerber's "republican mother hood" thesis may have obscured the presence of these trends, making it difficult to determine to what extent the Revolution really changed women's lives.

题目：

The passage suggests that, with regard to the history of women's education in the United States, Kerber's work differs from Woody's primarily concerning which of the following?

选项:

A、The extent to which women were interested in pursuing educational opportunities in the eighteenth century
B、The extent of the support for educa-tional opportunities for girls prior to the American Revolution.
C、The extent of public resistance to edu-cational opportunities for women after the American Revolution.
D、Whether attitudes toward women's educational opportunities changed during the eighteenth century.
E、Whether women needed to be educated in order to contribute to the success of a republican form of government

答案:

B
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题目：

Doctors hope that one day the body's master cells, called stem cells, can be directed to grow in organs or tissues appropriate for transplant, use them to test drugs and potentially toxic chemicals, and may study them to gain insight into basic human biology.

选项:

A、transplant, use them to test drugs and potentially toxic chemicals, and may study them
B、transplant, using them to test drugs and potentially toxic chemicals, and studied
C、transplant, used to test drugs and potentially toxic chemicals, and studied
D、a transplant, use them for testing drugs and potentially toxic chemicals, and for studying
E、a transplant, used to test drugs and potentially toxic chemicals, and may study them

答案:

C
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[Critical Reasoning]

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题目：

Which of the following most logically completes the passage?
 
Appendicitis (inflammation of the appendix) is potentially fatal; consequently, patients with symptoms strongly suggesting appendicitis almost always have their appendix removed.  The appropriate surgery is low-risk but performed unnecessarily in about 20 percent of all cases.  A newly developed internal scan for appendicitis is highly accurate, producing two misdiagnoses for every 98 correct diagnoses.  Clearly, using this test, doctors can largely avoid unnecessary removals of the appendix without, however, performing any fewer necessary ones than before, since ______.

选项:

A、the patients who are correctly diagnosed with this test as not having appendicitis invariably have medical conditions that are much less serious than appendicitis
B、the misdiagnoses produced by this test are always instances of attributing appendicitis to someone who does not, in fact, have it
C、all of the patients who are diagnosed with this test as having appendicitis do, in fact, have appendicitis
D、every patient who is diagnosed with this test as having appendicitis has more than one of the symptoms generally associated with appendicitis
E、the only patients who are misdiagnosed using this test are patients who lack one or more of the symptoms that are generally associated with appendicitis

答案:

B
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题目：

At an orientation meeting, the travelers were told that a visa, a landing card, and evidence of inoculation against typhoid fever would be needed by each of them.

选项:

A、a visa, a landing card, and evidence of inoculation against typhoid fever would be needed by each of them
B、they would need a visa, a landing card, and evidence of their being inoculated against typhoid fever
C、they would need evidence of being inoculated against typhoid fever and a visa and landing card
D、they would each need a visa, a landing card, and evidence of inoculation against typhoid fever
E、they would need visas, landing cards, and evidence of inoculation against typhoid fever for each of them

答案:

D
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[Problem Solving]

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题目：

If M  is the least common multiple of 90, 196, and 300, which of the following is NOT a factor of M  ?

选项:

A、600
B、700
C、900
D、2,100
E、4,900

答案:

A
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[Critical Reasoning]

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题目：

In one state, all cities and most towns have anti-smoking ordinances.  A petition entitled "Petition for Statewide Smoking Restriction" is being circulated to voters by campaign workers who ask only, "Do you want to sign a petition for statewide smoking restriction?"  The petition advocates a state law banning smoking in most retail establishments and in government offices that are open to the public.
 
Which of the following circumstances would make the petition as circulated misleading to voters who understand the proposal as extending the local ordinances statewide?

选项:

A、Health costs associated with smoking cause health insurance premiums to rise for everyone and so affect nonsmokers.
B、In rural areas of the state, there are relatively few retail establishments and government offices that are open to the public.
C、The state law would supersede the local anti-smoking ordinances, which contain stronger bans than the state law does.
D、There is considerable sentiment among voters in most areas of the state for restriction of smoking.
E、The state law would not affect existing local ordinances banning smoking in places where the fire authorities have determined that smoking would constitute a fire hazard.

答案:

C
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题目：

Many of the earliest known images of Hindu deities in India date from the time of the Kushan empire, fashioned either from the spotted sandstone of Mathura or Gandharan grey schist.

选项:

A、empire, fashioned either from the spotted sandstone of Mathura or
B、empire, fashioned from either the spotted sandstone of Mathura or from
C、empire, either fashioned from the spotted sandstone of Mathura or
D、empire and either fashioned from the spotted sandstone of Mathura or from
E、empire and were fashioned either from the spotted sandstone of Mathura or from

答案:

E
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题目：

Due to poaching and increased cultivation in their native habitats, researchers have determined that there are fewer than 100 Arabian leopards left in the wild, and that these leopards are thus many times as rare as China's giant pandas.

选项:

A、 Due to poaching and increased cultivation in their native habitats, researchers have determined that there are fewer than 100 Arabian leopards left in the wild, and that these leopards are thus many times as rare as
B、 Due to poaching and increased cultivation in their native habitats, there are fewer than 100 Arabian leopards left in the wild, researchers have determined, making them many times more rare than
C、 There are fewer than 100 Arabian leopards left in the wild due to poaching and increased cultivation in their native habitats, researchers have determined, which makes the leopards many times more rare compared to
D、 Researchers have determined that, because of being poached and increased cultivation in their native habitats, there are fewer than 100 Arabian leopards left in the wild, thus making them many more times as rare as
E、 Researchers have determined that, because of poaching and increased cultivation in their native habitats, there are fewer than 100 Arabian leopards left in the wild, and that these leopards are thus many times more rare than

答案:

E
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[Critical Reasoning]

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题目：

The traditional treatment of strep infections has been a seven-day course of antibiotics, either penicillin or erythromycin.  However, since many patients stop taking those drugs within three days, reinfection is common in cases where those drugs are prescribed.  A new antibiotic requires only a three-day course of treatment.  Therefore, reinfection will probably be less common in cases where the new antibiotic is prescribed than in cases where either penicillin or erythromycin is prescribed.
 
Which of the following, if true, most strengthens the argument?

选项:

A、Some of the people who are allergic to penicillin are likely to be allergic to the new antibiotic.
B、A course of treatment with the new antibiotic costs about the same as a course of treatment with either penicillin or erythromycin.
C、The new antibiotic has been shown to be effective in eradicating bacterial infections other than strep.
D、Some physicians have already begun to prescribe the new antibiotic instead of penicillin or erythromycin for the treatment of some strep infections.
E、Regardless of whether they take a traditional antibiotic or the new one, most patients feel fully recovered after taking the drug for three days.

答案:

E
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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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1574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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[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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[Undefined]

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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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726浏览

[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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180049浏览

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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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