问答

1答疑

[Problem Solving]

试题详情

题目:

The numbers x  and are three-digit positive integers, and x + y  is a four-digit integer.  The tens digit of x  equals 7 and the tens digit of y  equals 5.  If x < y , which of the following must be true?
 
 
  I.  The units digit of x + y  is greater than the units digit of either x or y.
 II.  The tens digit of x + y  equals 2.
III.  The hundreds digit of y  is at least 5.

选项:

A、II only
B、III only
C、I and II
D、I and III
E、II and III

答案:

B
1答疑

[Data Sufficiency]

试题详情

题目:

In June 1989, what was the ratio of the number of sales transactions made by Salesperson X to the number of sales transactions made by Salesperson Y?
(1)   In June 1989, Salesperson X made 50 percent more sales transactions than Salesperson Y did in May 1989.
(2)   In June 1989, Salesperson Y made 25 percent more sales transactions than in May 1989.
                  

选项:

答案:

C
1答疑

[Reading Comprehension]

试题详情

文章:

Colonial historian David Allen's intensive study of five communities in seventeenth-century Massachusetts is a model of meticulous scholarship on the detailed microcosmic level, and is convincing up to a point.  Allen suggests that much more coherence and direct continuity existed between English and colonial agricultural practices and administrative organization than other historians have suggested.  However, he overstates his case with the declaration that he has proved "the remarkable extent to which diversity in New England local institutions was directly imitative of regional differences in the mother country."
 
Such an assertion ignores critical differences between seventeenth-century England and New England.  First, England was overcrowded and land-hungry; New England was sparsely populated and labor-hungry.  Second, England suffered the normal European rate of mortality; New England, especially in the first generation of English colonists, was virtually free from infectious diseases.  Third, England had an all-embracing state church; in New England membership in a church was restricted to the elect.  Fourth, a high proportion of English villagers lived under paternalistic resident squires; no such class existed in New England.  By narrowing his focus to village institutions and ignoring these critical differences, which studies by Greven, Demos, and Lockridge have shown to be so important, Allen has created a somewhat distorted picture of reality.
 
Allen's work is a rather extreme example of the "country community" school of seventeenth-century English history whose intemperate excesses in removing all national issues from the history of that period have been exposed by Professor Clive Holmes.  What conclusion can be drawn, for example, from Allen's discovery that Puritan clergy who had come to the colonies from East Anglia were one-third to one-half as likely to return to England by 1660 as were Puritan ministers from western and northern England?  We are not told in what way, if at all, this discovery illuminates historical understanding.  Studies of local history have enormously expanded our horizons, but it is a mistake for their authors to conclude that village institutions are all that mattered, simply because their functions are all that the records of village institutions reveal.

题目:

According to the passage, which of the following was true of most villages in seventeenth-century England?

选项:

A、The resident squire had significant authority.
B、Church members were selected on the basis of their social status within the community.
C、Low population density restricted agricultural and economic growth.
D、There was little diversity in local institutions from one region to another.
E、National events had little impact on local customs and administrative organization.

答案:

A
1答疑

[Problem Solving]

试题详情

题目:

which of the following is a value of X
for which X^11-X^3>0

选项:

A、–2
B、–1
C、–1/2
D、1/2
E、1

答案:

C
1答疑

[Problem Solving]

试题详情

题目:

At a certain food stand, the price of each apple is ¢ 40 and the price of each orange is ¢ 60.  Mary selects a total of 10 apples and oranges from the food stand, and the average (arithmetic mean) price of the 10 pieces of fruit is ¢ 56.  How many oranges must Mary put back so that the average price of the pieces of fruit that she keeps is ¢ 52?

选项:

A、1
B、2
C、3
D、4
E、5

答案:

E
1答疑

[Problem Solving]

试题详情

题目:

The points R, T, and U lie on a circle that has radius 4.  If the length of arc RTU is , what is the length of line segment RU?b

选项:

A、
B、
C、3
D、4
E、6

答案:

D
1答疑

[Two-part Analysis]

试题详情

题目:

选项:

A、The group is sedentary rather than  nomadic.
B、The group has not discovered pottery.
C、The group  uses thin-Walled pots.
D、The group uses fire for warmth and protection.
E、The group  uses thick-walled pots.

答案:

A C
1答疑

[Reading Comprehension]

试题详情

文章:

题目:

The passage suggests that Margaret Cavendish’s decision to become an author was motivated, at least in part, by a desire to

选项:

A、justify her support for the Royalist cause
B、encourage her readers to work toward eradicating Filmerian patriarchalism
C、persuade other women to break free from their political and social isolation
D、analyze the causes for women’s exclusion from the pursuit of power
E、create a world over which she could exercise total control

答案:

E
1答疑

[Sentence Correction]

试题详情

题目:

Beyond the immediate cash flow crisis that the museum faces, its survival depends on if it can broaden its membership and leave its cramped quarters for a site where it can store and exhibit its more than 12,000 artifacts.

选项:

A、if it can broaden its membership and leave
B、whether it can broaden its membership and leave
C、whether or not it has the capability to broaden its membership and can leave
D、its ability for broadening its membership and leaving
E、the ability for it to broaden its membership and leave

答案:

B
1答疑

[Data Sufficiency]

试题详情

题目:

What is the hundreds digit of the integer z?
(1)   10z = 93,120
(2) z rounded to the nearest hundred is 9,300.

选项:

答案:

A
0评分
1157浏览

[Undefined]

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
3300浏览

[Undefined]

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
3646浏览

[Undefined]

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
1214浏览

[Undefined]

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
2786浏览

[GWD]

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
1903浏览

[OG]

The primary purpose of the passage is to
为什么选E不选B
0评分
1224浏览

[Undefined]

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
1289浏览

[Undefined]

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
305155浏览

[Undefined]

Analytical!
请问may老师,这题该用什么思路来做?
0评分
312281浏览

[Undefined]

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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