[Data Sufficiency]
试题详情
题目：
Is │x│=│y│?
(1) x - y = 6
(2) x + y = 0
fܸ*选项:
答案:
B
问答
1答疑
1答疑
[Data Sufficiency]
试题详情
题目：
If k and ℓ are lines in the xy-plane, is the slope of k less than the slope of ℓ ?
- The x-intercept of line k is positive, and the x-intercept of line ℓ is negative.
- Lines k and ℓ intersect on the positive y-axis.
选项:
A、Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B、Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C、BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D、EACH statement ALONE is sufficient.
E、Statements (1) and (2) TOGETHER are not sufficient.
答案:
C
1答疑
[Critical Reasoning]
试题详情
题目：
Exports of United States wood pulp will rise considerably during this year. The reason for the rise is that the falling value of the dollar will make it cheaper for paper manufacturers in Japan and Western Europe to buy American wood pulp than to get it from any other source.
Which of the following is an assumption made in drawing the conclusion above?
选项:
A、Factory output of paper products in Japan and Western Europe will increase sharply during this year.
B、The quality of the wood pulp produced in the United States would be adequate for the purposes of Japanese and Western European paper manufacturers.
C、Paper manufacturers in Japan and Western Europe would prefer to use wood pulp produced in the United States if cost were not a factor.
D、Demand for paper products made in Japan and Western Europe will not increase sharply during this year.
E、Production of wood pulp by United States companies will not increase sharply during this year.
答案:
B
1答疑
[Data Sufficiency]
试题详情
题目：
If p and n are positive integers and p > n, what is the remainder when p2 – n2 is divided by 15 ?
(1) The remainder when p + n is divided by 5 is 1.
(2) The remainder when p – n is divided by 3 is 1.
选项:
A、Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B、Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C、BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D、EACH statement ALONE is sufficient.
E、Statements (1) and (2) TOGETHER are NOT sufficient.
答案:
E
1答疑
[Critical Reasoning]
试题详情
题目：
Sammy: For my arthritis, I am going to try my aunt's diet: large amounts of wheat germ and garlic. She was able to move more easily right after she started that diet.
Pat: When my brother began that diet, his arthritis got worse. But he has been doing much better since he stopped eating vegetables in the nightshade family, such as tomatoes and peppers.
Which of the following, if true, would provide a basis for explaining the fact that Sammy's aunt and Pat's brother had contrasting experiences with the same diet?
选项:
A、A change in diet, regardless of the nature of the change, frequently brings temporary relief from arthritis symptoms.
B、The compounds in garlic that can lessen the symptoms of arthritis are also present in tomatoes and peppers.
C、Arthritis is a chronic condition whose symptoms improve and worsen from time to time without regard to diet.
D、In general, men are more likely to have their arthritis symptoms alleviated by avoiding vegetables in the nightshade family than are women.
E、People who are closely related are more likely to experience the same result from adopting a particular diet than are people who are unrelated.
答案:
C
1答疑
[Problem Solving]
试题详情
题目：
A certain online form requires a 2-digit code for the day of the month to be entered into one of its fields, such as 04 for the 4th day of the month. The code is valid if it is 01, 02, 03, ..., 31 and not valid otherwise. The transpose of a code xy is yx. For example, 40 is the transpose of 04. If N is the number of valid codes having a transpose that is not valid, what is the value of N ?
选项:
A、12
B、13
C、18
D、19
E、20
答案:
D
1答疑
[Data Sufficiency]
试题详情
题目：
a1 , a2 , a3 , . . . , a15
In the sequence shown, an = an – 1 + k, where 2 ≤ n ≤ 15 and k is a nonzero constant. How many of the terms in the sequence are greater than 10 ?
(1)a1 = 24
(2)a8 = 10
选项:
A、Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B、Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C、BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D、EACH statement ALONE is sufficient.
E、Statements (1) and (2) TOGETHER are NOT sufficient.
答案:
B
1答疑
[Reading Comprehension]
试题详情
文章：
| Line | Determining whether a given population of animals |
| constitutes a distinct species can be difficult | |
| because no single accepted definition of the term | |
| exists. One approach, called the biological species | |
| (5) | concept, bases the definition on reproductive |
| compatibility. According to this view, a species | |
| is a group of animals that can mate with one | |
| another to produce fertile offspring but cannot | |
| mate successfully with members of a different | |
| (10) | group. Yet this idea can be too restrictive. First, |
| mating between groups labeled as different species | |
| (hybridization), as often occurs in the canine family, | |
| is quite common in nature. Second, sometimes | |
| the differences between two populations might not | |
| (15) | prevent them from interbreeding, even though they |
| are dissimilar in traits unrelated to reproduction; | |
| some biologists question whether such disparate | |
| groups should be considered a single species. A | |
| third problem with the biological species concept is | |
| (20) | that investigators cannot always determine whether |
| two groups that live in different places are capable | |
| of interbreeding. | |
| When the biological species concept is difficult | |
| to apply, some investigators use phenotype, an | |
| (25) | organism’s observable characteristics, instead. |
| Two groups that have evolved separately are likely | |
| to display measurable differences in many of their | |
| traits, such as skull size or width of teeth. If the | |
| distribution of measurements from one group does | |
| (30) | not overlap with those of another, the two groups |
| might reasonably be considered distinct species. |
题目：
Which of the following best describes the function of lines 10–13
选项:
A、It elaborates the definition of the biological species concept given in a previous sentence.
B、It develops a point about the biological species concept made in the previous sentence.
C、It states the author’s central point about the biological species concept.
D、It identifies a central assumption underlying the biological species concept.
E、It demonstrates why the biological species concept is invalid.
答案:
B
1答疑
[Problem Solving]
试题详情
题目：
In the floor plan of an executive's beach house above, the north and south walls of the living room are parallel. What is the floor area, in square feet, of the bedroom?
选项:
A、
B、450
C、
D、225
E、It cannot be determined from the information given.
答案:
C
1答疑
[Sentence Correction]
试题详情
题目：
Analyzing campaign expenditures, the media has had as a focus the high costs and low ethics of campaign finance, but they have generally overlooked the cost of actually administering elections, which includes facilities, transport, printing, staffing, and technology.
选项:
A、Analyzing campaign expenditures, the media has had as a focus
B、Analyses of campaign expenditures by the media has been focus on
C、In analyzing campaign expenditures, the media have focused on
D、Media analyses of campaign expenditures have had as a focus
E、In their analysis of campaign expenditures, the media has been focusing on
答案:
C
0评分
383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.
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
1385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
1549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
595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
1378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
975浏览
0评分
651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
666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
156842浏览
0评分
163951浏览
