[Data Sufficiency]
试题详情
题目：
Lines m and n intersect, as shown in the figure above. What is the value of u - w?
(1) u = 90
(2) Lines m and n are perpendicular.
选项:
答案:
D
问答
1答疑
1答疑
[Data Sufficiency]
试题详情
题目：
lf x, y, and z are three-digit positive integers and if x = y+ z, iS the hundreds digit of x equal to the sum of the hundreds digits of y and z ?
(1) The tens digit of x is equal to the sum of the tens digits of y and z.
(2) The units digit of x is equal to the sum of the units digits of y and z.
(1) The tens digit of x is equal to the sum of the tens digits of y and z.
(2) The units digit of x is equal to the sum of the units digits of y and z.
选项:
答案:
A
1答疑
[Reading Comprehension]
试题详情
文章：
In Winters v. United States (1908), the Supreme Court held that the right to use waters flowing through or adjacent to the Fort Belknap Indian Reservation was reserved to American Indians by the treaty establishing the reservation. Although this treaty did not mention water rights, the Court ruled that the federal government, when it created the reservation, intended to deal fairly with American Indians by reserving for them the waters without which their lands would have been useless. Later decisions, citing Winters, established that courts can find federal rights to reserve water for particular purposes if (1) the land in question lies within an enclave under exclusive federal jurisdiction, (2) the land has been formally withdrawn from federal public lands—i.e., withdrawn from the stock of federal lands available for private use under federal land use laws—and set aside or reserved, and (3) the circumstances reveal the government intended to reserve water as well as land when establishing the reservation.
Some American Indian tribes have also established water rights through the courts based on their traditional diversion and use of certain waters prior to the United States’ acquisition of sovereignty. For example, the Rio Grande pueblos already existed when the United States acquired sovereignty over New Mexico in 1848. Although they at that time became part of the United States, the pueblo lands never formally constituted a part of federal public lands; in any event, no treaty, statute, or executive order has ever designated or withdrawn the pueblos from public lands as American Indian reservations. This fact, however, has not barred application of the Winters doctrine. What constitutes an American Indian reservation is a question of practice, not of legal definition, and the pueblos have always been treated as reservations by the United States. Thispragmatic approach is buttressed by Arizona v. California (1963), wherein the Supreme Court indicated that the manner in which any type of federal reservation is created does not affect the application to it of the Winters doctrine. Therefore, the reserved water rights of Pueblo Indians have priority over other citizens’ water rights as of 1848, the year in which pueblos must be considered to have become reservations.
Some American Indian tribes have also established water rights through the courts based on their traditional diversion and use of certain waters prior to the United States’ acquisition of sovereignty. For example, the Rio Grande pueblos already existed when the United States acquired sovereignty over New Mexico in 1848. Although they at that time became part of the United States, the pueblo lands never formally constituted a part of federal public lands; in any event, no treaty, statute, or executive order has ever designated or withdrawn the pueblos from public lands as American Indian reservations. This fact, however, has not barred application of the Winters doctrine. What constitutes an American Indian reservation is a question of practice, not of legal definition, and the pueblos have always been treated as reservations by the United States. Thispragmatic approach is buttressed by Arizona v. California (1963), wherein the Supreme Court indicated that the manner in which any type of federal reservation is created does not affect the application to it of the Winters doctrine. Therefore, the reserved water rights of Pueblo Indians have priority over other citizens’ water rights as of 1848, the year in which pueblos must be considered to have become reservations.
题目：
The "pragmatic approach" mentioned in hightlight text of the passage is best defined as one that
选项:
A、grants recognition to reservations that were never formally established but that have traditionally been treated as suchdetermines the water rights of all citizens in a particular region by examining the actual history of water usage in that region
B、gives federal courts the right to reserve water along with land even when it is clear that the government originally intended to reserve only the land
C、bases the decision to recognize the legal rights of a group on the practical effect such a recognition is likely to have on other citizens
D、dictates that courts ignore precedents set by such cases as Winters v. United States in deciding what water rights belong to reserved land
答案:
A
1答疑
[Sentence Correction]
试题详情
题目：
Part of the proposed increase in state education spending is due to higher enrollment, since the number of students in public schools have grown steadily since the mid-1980's and, at nearly 47 million, are at a record high.
选项:
A、enrollment, since the number of students in public schools have grown steadily since the mid-1980's and, at nearly 47 million, are at.
B、Enrollment, with a number of students in public schools growing steadily since the mid-1980's and, at nearly 47 million, reaching.
C、Enrollment: since students in public schools have grown steadily in number since the mid-1980's and, at nearly 47 million, have reached.
D、Enrollment: the number of students in public schools has grown steadily since the mid-1980's and, at nearly 47 million, has reached.
E、Enrollment: students in public schools have grown steadily in number since the mid-1980's and , at nearly 47million, are at
答案:
D
1答疑
[Sentence Correction]
试题详情
题目：
The Rorschach test is gaining new respect as a diagnostic tool because it takes only one hour to expose behavior and thought processes that may be unlikely to emerge in other procedures or weeks of ordinary interviewing.
选项:
A、that may be unlikely to emerge in other procedures or weeks of ordinary interviewing
B、whose emergence is unlikely in other procedures or weeks of ordinary interviews
C、that might not emerge in other procedures or in weeks of ordinary interviews
D、that may not emerge under other procedures or weeks of ordinary interviews
E、likely not to emerge during weeks of ordinary interviewing or in other procedures
答案:
C
1答疑
[Reading Comprehension]
试题详情
文章：
Although many lines of evidence indicate that birds evolved from ground-dwelling theropod dinosaurs, some scientists remain unconvinced. They argue that theropods appeared too late to have given rise to birds, noting that Archaeopteryx litho graphica-the oldest known bird-appears in the fossil record about 150 million years ago, whereas the fossil remains of various nonavian maniraptor theropods-the closest known relatives of birds-date only to about 115 million years ago. But investigators have now uncovered bones that evidently belong to nonavian maniraptors dating to the time of Archaeopteryx. In any case, failure to find fossils of a predicted kind does not rule out their existence in an undiscovered deposit.Skeptics also argue that the fused clavicles (the "wishbone") of birds differ from the unfused clavicles of theropods. This objection was reasonable when only early theropod clavicles had been discovered, but fossilized theropod clavicles that look just like the wishbone of Archaeopteryx have now been unearthed. Finally, some scientists argue that the complex lungs of birds could not have evolved from theropod lungs, an assertion that cannot be supported or falsified at the moment, because no fossil lungs are preserved in the paleontological record.
题目：
In the context of the passage, the phrase "fossils of a predicted kind" (in the highlighted text) most likely refers to which of the following?
选项:
A、Theropod fossils with fused clavicles
B、Theropod fossils that are similar in structure to Archaeopteryx fossils
C、Theropod fossils dating back more than 150 million years
D、Fossils indicating the structure of theropod lungs
E、Fossils indicating the structure of Archaeopteryx lungs
答案:
C
1答疑
[Problem Solving]
试题详情
题目：
From the consecutive integers –10 to 10, inclusive, 20 integers are randomly chosen with repetitions allowed. What is the least possible value of the product of the 20 integers?
选项:
A、(–10)20
B、(–10)10
C、–(10)19
D、–(10)20
答案:
E
1答疑
[Critical Reasoning]
试题详情
题目：
The true scientific significance of a group of unusual fossils discovered by the paleontologist Charles Walcott is more likely to be reflected in a recent classification than it was in Walcott’s own classification. Walcott was, after all, a prominent member of the scientific establishment. His classifications are thus unlikely to have done anything but confirm what established science had already taken to be true.
Which one of the following most accurately describes a questionable technique used in the argument?
Which one of the following most accurately describes a questionable technique used in the argument?
选项:
A、A. It draws conclusions about the merit of a position and about the content of that position from evidence about the position's source.
B、B. It cites two pieces of evidence, each of which is both questionable and unverifiable, and uses this evidence to support its conclusions.
C、C. It bases a conclusion on two premises that contradict each other and minimizes this contradiction by the vagueness of the terms employed.
D、D. It attempts to establish the validity of a claim, which is otherwise unsupported, by denying the truth of the opposite of that claim.
E、E. It analyzes the past on the basis of social and political categories that properly apply only to the present and uses the results of this analysis to support its conclusion.
答案:
A
1答疑
[Problem Solving]
试题详情
题目：
During a trip, Francine traveled x percent of the total distance at an average speed of 40 miles per hour and the rest of the distance at an average speed of 60 miles per hour. In terms of x , what was Francine's average speed for the entire trip?
选项:
A、
B、
C、
D、
E、
答案:
E
1答疑
[Problem Solving]
试题详情
题目：
If x , y , and k are positive numbers such that (
)(10) + (
)(20) = k and if 
, which of the following could be the value of k ?
)(10) + ()(20) = k and if , which of the following could be the value of k ?选项:
A、10
B、12
C、15
D、18
E、30
答案:
D
0评分
329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
1285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
1461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
564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
1316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
937浏览
0评分
631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
636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
150169浏览
0评分
157277浏览
