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题目：

Researchers agreed that the study of new treatments for heart attack patients was extremely important but more research was needed to determine that balloon angioplasty preceded with ultrasound was or was not any better for heart attack patients than the balloon procedure by itself.

选项:

A、more research was needed to determine that balloon angioplasty preceded with ultrasound was or was not any better for heart attack patients than
B、more research was needed for determining whether or not balloon angioplasty preceded by ultrasound is any better for heart attack patients than is
C、that more research was needed to determine whether balloon angioplasty preceded by ultrasound is any better for heart attack patients than
D、that more research was needed to determine that balloon angioplasty preceded with ultrasound was any better for heart attack patients than
E、that more research was needed for determining that balloon angioplasty preceded by ultrasound is or is not any better for heart attack patients than is

答案:

C
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题目：

More than fifty years after the Second World War, a number of African American soldiers were awarded―some of them posthumously―with the Congressional Medal of Honor, which was the nation's highest military award, and which was long overdue in recognition of their outstanding bravery.⁥

选项:

A、with the Congressional Medal of Honor, which was the nation's highest military award, and which was long overdue in
B、with the Congressional Medal of Honor, the nation's highest military award for long-overdue
C、the Congressional Medal of Honor, which was the nation's highest military award, long-overdue in
D、the Congressional Medal of Honor, the nation's highest military award for long-overdue
E、the Congressional Medal of Honor, the nation's highest military award, in long-overdue

答案:

E
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题目：

In ancient Thailand, much of the local artisans' creative energy was expended for the creation of Buddha images and when they constructed and decorated the temples that enshrined them.

选项:

A、much of the local artisans' creative energy was expended for the creation of Buddha images and when they constructed and decorated  the temples that enshrined them
B、much of the local artisans' creative energy was expended on the creation of Buddha images and on construction and decoration of the temples in which they were enshrined
C、much of the local artisans' creative energy was expended on the creation of Buddha images as well as constructing and decoration of the temples in which they were enshrined
D、creating images of Buddha accounted for much of the local artisans' creative energy, and also constructing and decorating the temples enshrining them
E、the creating of Buddha images accounted for much of  the local artisans' creative energy as well as construction and decoration of the temples that enshrined them

答案:

B
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题目：

Although appearing less appetizing than most of their round and red supermarket cousins, heirloom tomatoes, grown from seeds saved during the previous year—they are often green and striped, or have plenty of bumps and bruises—heirlooms are more flavorful and thus in increasing demand.

选项:

A、Although appearing less appetizing than most of their round and red supermarket cousins, heirloom tomatoes, grown from seeds saved during the previous year
B、Although heirloom tomatoes, grown from seeds saved during the previous year, appear less appetizing than most of their round and red supermarket cousins
C、Although they appear less appetizing than most of their round and red supermarket cousins, heirloom tomatoes, grown from seeds saved during the previous year
D、Grown from seeds saved during the previous year, heirloom tomatoes appear less appetizing than most of their round and red supermarket cousins
E、Heirloom tomatoes, grown from seeds saved during the previous year, although they appear less appetizing than most of their round and red supermarket cousins

答案:

B
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题目：

That twenty-one ceramic dog figurines were discovered during the excavating of a 1,000-year-old Hohokam village in Tempe, Arizona, has nearly doubled the number of these artifacts known to exist.

选项:

A、That twenty-one ceramic dog figurines were discovered during the excavating
B、Twenty-one ceramic dog figurines discovered at the excavation 
C、Discovering twenty-one ceramic dog figurines at the excavating 
D、Ceramic dog figurines, twenty-one of which were discovered during excavating 
E、The discovery of twenty-one ceramic dog figurines during the excavation

答案:

E
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题目：

Just like the background in art history needed by an archaeologist in order to evaluate finds of ancient art, the nautical archaeologist needs specialized knowledge of the history and theory of ship design in order to understand shipwrecks.

选项:

A、Just like the background in art history needed by an archaeologist in order to evaluate finds of ancient art, the
B、Just as an archaeologist who needs a background in art history to evaluate finds of ancient art, a
C、Just as an archaeologist needs a background in art history to evaluate finds of ancient art, so a
D、Like the archaeologist who evaluates finds of ancient art and requires a background in art history, so the
E、As evaluating finds of ancient art requires an archaeologist who has a background in art history, so the

答案:

C
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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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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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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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2608浏览

[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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