问答

4答疑

[Critical Reasoning]

登录查看答疑

试题详情

题目：

Traces of cultivated emmer wheat have been found among the earliest agricultural remains of many archaeological sites in Europe and Asia.  The only place where the wild form of emmer wheat has been found growing is a relatively narrow strip of southwest Asia.  Since the oldest remains of cultivated emmer wheat yet found are from village sites in the same narrow strip, it is clear that emmer wheat was first domesticated somewhere in that strip.
 
Which of the following, if true, most strengthens the argument?

选项:

A、The present-day distribution of another wild wheat, einkorn, which was also domesticated early in the development of agriculture, covers a much larger area of southwest Asia.
B、Modern experiments show that wild emmer wheat can easily be domesticated so as to yield nearly as well as traditionally domestic strains.
C、At the time when emmer wheat was first cultivated, it was the most nutritious of all the varieties of grain that were then cultivated.
D、In the region containing the strip where wild emmer wheat has been found, climatic conditions have changed very little since before the development of agriculture.
E、It is very difficult, without genetic testing, to differentiate the wild form of emmer wheat from a closely related wild wheat that also grows in southwest Asia.

答案:

D
4答疑

[Reading Comprehension]

登录查看答疑

试题详情

文章：

    Most pre-1990 literature on businesses' use of information technology (IT)-defined as any form of computer based information system-focused on spectacular IT successes and reflected a general optimism concerning IT's potential as a resource for creating competitive advantage. But toward the end of the 1980's, some economists spoke of a"productivity paradox"; despite huge IT investments, most notably in the service sectors, productivity stagnated. In the retail industry, for example, in which IT had been widely adopted during the 1980's, productivity (average output per hour) rose at an average annual rate of 1.1 percent between 1973 and 1989, compared with 2.4 percent in the preceding 25-year period. Proponents of IT argued that it takes both time and a critical mass of investment for IT to yield benefits, and some suggested that growth figures for the 1990's proved these benefits were finally being realized. They also argued that measures of productivity ignore what would have happened without investments in IT productivity gains might have been even lower. There were even claims that IT had improved the performance of the service sector significantly, although macroeconomic measures of productivity did not reflect the improvement.

    But some observers questioned why, if IT had conferred economic value, it did not produce direct competitive advantages for individual firms. Resource-based theory offers an answer, asserting that, in general, firms gain competitive advantages by accumulating resources that are economically valuable, relatively scarce, and not easily replicated. According to a recent study of retail firms, which confirmed that IT has become pervasive and relatively easy to acquire, IT by itself appeared to have conferred little advantage. In fact, though little evidence of any direct effect was found, the frequent negative correlations between IT and performance suggested that IT had probably weakened some firms' competitive positions. However, firms' human resources, in and of themselves, did explain improved performance, and some firms gained IT-related advantages by merging IT with complementary resources, particularly human resources. The findings support the notion, founded in resource-based theory, that competitive advantages do not arise from easily replicated resources, no matter how impressive or economically valuable they may be, but from complex, intangible resources.

题目：

The passage is primarily concerned with

选项:

A、describing a resource and indicating various methods used to study it
B、presenting a theory and offering an opposing point of view
C、providing an explanation for unexpected findings
D、demonstrating why a particular theory is unfounded
E、resolving a disagreement regarding the uses of a technology

答案:

C
4答疑

[Sentence Correction]

登录查看答疑

试题详情

题目：

A recent United States Census Bureau report shows that there are more than three times as many households where the children and grandchildren are living in their grandparents' home as compared to households where the grandparents are living in their children's or grandchildren's home.

选项:

A、 as compared to households where the
B、 as there are households where the
C、 as those whose
D、 than compared to those where the
E、 than there are whose

答案:

B
4答疑

[Critical Reasoning]

登录查看答疑

试题详情

题目：

Which of the following most logically completes the argument below?
 
According to promotional material published by the city of Springfield, more tourists stay in hotels in Springfield than stay in the neighboring city of Harristown.  A brochure from the largest hotel in Harristown claims that more tourists stay in that hotel than stay in the Royal Arms Hotel in Springfield.  If both of these sources are accurate, however, the county's "Report on Tourism" must be in error in indicating that _______.

选项:

A、more tourists stay in hotel accommodations in Harristown than stay in the Royal Arms Hotel
B、the Royal Arms Hotel is the only hotel in Springfield
C、there are several hotels in Harristown that are larger than the Royal Arms Hotel
D、some of the tourists who have stayed in hotels in Harristown have also stayed in the Royal Arms Hotel
E、some hotels in Harristown have fewer tourist guests each year than the Royal Arms Hotel has

答案:

B
4答疑

[Data Sufficiency]

登录查看答疑

试题详情

题目：

Joanna bought only $0.15 stamps and $0.29 stamps. How many $0.15 stamps did she buy?
(1)   She bought $4.40 worth of stamps.
(2) She bought an equal number of $0.15 stamps and $0.29 stamps.

选项:

答案:

A
4答疑

[Critical Reasoning]

登录查看答疑

试题详情

题目：

A product that represents a clear technological advance over competing products can generally command a high price. Because technological advances tend to be quickly surpassed and companies want to make large profits while they still can, many companies charge the maximum possible price for such a product.  But large profits on the new product will give competitors a strong incentive to quickly match the new product's capabilities.  Consequently, the strategy to maximize overall profit from a new product is to charge less than the greatest possible price.
In the argument above, the two portions in boldface play which of the following roles?

选项:

A、The first is a consideration that has been raised to argue that a certain strategy is counterproductive; the second presents that strategy.
B、The first is a consideration raised to support the strategy that the argument recommends; the second presents that strategy.
C、The first is a consideration raised to explain the appeal of a certain strategy; the second presents that strategy.
D、The first is an assumption, rejected by the argument, that has been used to justify a course of action; the second presents that course of action.
E、The first is a consideration that has been used to justify pursuing a goal that the argument rejects; the second presents a course of action that has been adopted in pursuit of that goal.

答案:

C
4答疑

[Sentence Correction]

登录查看答疑

试题详情

题目：

Deliberately imitating the technique of Louis Armstrong, jazz singer Billie Holiday'sapproach to singing was to use her voice like an instrument, in that she ranged freely over the beat, flattened out the melodic contours of tunes, and, in effect,recomposed songs to suit her range, style, and artistic sensibilities.

选项:

A、Billie Holiday's approach to singing was to use her voice like an instrument, in that she ranged freely over the beat, flattened.
B、Billie Holiday's approach to singing was to use her voice in a similar way to how other musicians play instruments, in ranging freely over the beat, flattening.
C、Billie Holiday approached singing by using her voice like other musicians played instruments, ranging freely over the beat, flattening.
D、Billie Holiday used her voice in the same way that other musicians use their instruments, in that she ranged freely over the beat, flattening.
E、Billie Holiday approached singing by using her voice like other musicians Instruments, ranging freely over the beat, flattening.

答案:

D
4答疑

[Sentence Correction]

登录查看答疑

试题详情

题目：

An archaeological excavation at what might have been a workshop where statues were reproduced yielded 1,532 fragments of human figures, including 7 intact statues.

选项:

A、what might have been a workshop where statues were reproduced yielded 1,532 fragments of human figures, including
B、what might have been a workshop where statues were reproduced yielded 1,532 fragments of human figures and
C、the site of a possible workshop where statues were reproduced yielded 1,532 fragments of human figures and
D、the site of a possible workshop where statues were reproduced yielded 1,532 fragments of human figures, including
E、the site of a possible workshop where statues might have been reproduced yielded 1,532 fragments of human figures, including

答案:

B
4答疑

[Sentence Correction]

登录查看答疑

试题详情

题目：

The ancient Anasazi harvested such native desert vegetation as the purple-flowered bee plant, what they now commonly call wild spinach in northern Arizona and other parts of the southwestern United States.

选项:

A、what they now commonly call
B、a plant that they now commonly call
C、now commonly called
D、and is now commonly called
E、which it is now commonly called

答案:

C
4答疑

[Sentence Correction]

登录查看答疑

试题详情

题目：

Some anthropologists regard the early hominids' manner of walking as being less efficient than in modern human beings.

选项:

A、as being less efficient than in
B、as less efficient than it is in
C、as less efficient than that of
D、to be less efficient than that of
E、to have been less efficient than it is in

答案:

C
0评分
1917浏览

[Undefined]

登录查看答疑
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？
0评分
4976浏览

[Undefined]

登录查看答疑
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
0评分
5642浏览

[Undefined]

登录查看答疑
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
0评分
1898浏览

[Undefined]

登录查看答疑
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？
0评分
4104浏览

[GWD]

登录查看答疑
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
0评分
2870浏览

[OG]

登录查看答疑
The primary purpose of the passage is to
为什么选E不选B
0评分
1903浏览

[Undefined]

登录查看答疑
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
0评分
1992浏览

[Undefined]

登录查看答疑
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
0评分
424605浏览

[Undefined]

登录查看答疑
Analytical!
请问may老师，这题该用什么思路来做？
0评分
431742浏览

[Undefined]

登录查看答疑
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
点我领取
免费专项课程
 在线咨询