问答

5答疑

[Critical Reasoning]

登录查看答疑

试题详情

题目：

Cognitive scientist: Using the pioneering work of comparative psychologist Gordon Gallup as a model, several studies have investigated animals’ capacity for mirror self-recognition (MSR). Most animals exposed to a mirror respond only with social behavior, such as aggression. However, in the case of the great apes, repeated exposure to mirrors leads to self-directed behaviors, such as exploring the inside of the mouth, suggesting that these animals recognize the reflection as an image of self. The implication of these studies is that the great apes have a capacity for self-awareness unique among nonhuman species.

The cognitive scientist makes which of the following assumptions in the argument above?

选项:

A、Gallup's work has established that the great apes have a capacity for MSR unique among nonhuman species.
B、If an animal does not have the capacity for MSR, it does not have the capacity for self-awareness.
C、If a researcher exposes an animal to a mirror and that animal exhibits social behavior, that animal is incapable of being self-aware.
D、When exposed to a mirror, all animals display either social behavior or self-directed behavior.
E、Animals that do not exhibit MSR may demonstrate a capacity for self-awareness in other ways.

答案:

B
5答疑

[Sentence Correction]

登录查看答疑

试题详情

题目：

Although the first pulsar, or rapidly spinning collapsed star, to be sighted was in the summer of 1967 by graduate student Jocelyn Bell, it had not been announced until February, 1968.

选项:

A、Although the first pulsar, or rapidly spinning collapsed star, to be sighted was in the summer of 1967 by graduate student Jocelyn Bell, it had not been announced until February, 1968.
B、Although not announced until February, 1968, in the summer of 1967 graduate student Jocelyn Bell observed the first pulsar, or rapidly spinning collapsed star, to be sighted.
C、Although observed by graduate student Jocelyn Bell in the summer of 1967, the discovery of the first sighted pulsar, or rapidly spinning collapsed star, had not been announced before February, 1968.
D、The first pulsar, or rapidly spinning collapsed star, to be sighted was observed in the summer of 1967 by graduate student Jocelyn Bell, but the discovery was not announced until February, 1968.
E、The first sighted pulsar, or rapidly spinning collapsed star, was not announced until February, 1968, while it was observed in the summer of 1967 by graduate student Jocelyn Bell.

答案:

D
5答疑

[Sentence Correction]

登录查看答疑

试题详情

题目：

New items developed for automobiles in the 1997 model year included
a safer air bag , which, unlike previous air bags, eliminated the possibility
that a burst of smoke would appear when the bag inflated, and making an
already terrified passenger think the car was on fire.

选项:

A、inflated, and making.
B、inflated, so that it could make.
C、inflated and made.
D、inflated and make.
E、inflated to make.

答案:

D
5答疑

[Sentence Correction]

登录查看答疑

试题详情

题目：

The cathedrals of the Middle Ages were community centers just as much as they were purely religious edifices; and they were structures that represented a city’s commitment to a public realm, the opposite of being a private one.

选项:

A、community centers just as much as they were purely religious edifices; and they were structures that represented a city’s commitment to a public realm, the opposite of being a private one
B、community centers as much as purely religious edifices; they were structures representing a city’s commitment to a public realm, as opposed to private
C、community centers as well as purely religious edifices; they were structures that represented a city’s commitment to a public realm, not private ones
D、as much community centers as purely religious edifices, structures that represented a city’s commitment to a public realm, as opposed to a private one
E、as much community centers as they were purely religious edifices, structures representing a city’s commitment to a public realm, opposite of a private one

答案:

D
5答疑

[Reading Comprehension]

登录查看答疑

试题详情

文章：

Solar ponds are bodies of water in which circulation is incomplete and there is a very high salt concentration that increases with depth.  This vertical change in salinity serves to trap heat because concentrated brine in the lowest water level acts as a collector and storage area for solar heat, while the less saline, lighter water at the upper levels provides insulation.  Heat is thus retained in the depths.
 
An artificial pond of this type has been constructed on the western shore of the Dead Sea in Israel in order to test its suitability as a source of low-grade heat for conversion into electricity.  An immediate threat to the success of the venture was the growth of algae.  Water in solar ponds must be kept maximally transparent to allow penetration of light to the deep storage area.  Therefore, any particles of matter in the water, such as algae cells, that scatter or absorb light will interfere with the collection of heat.
 
One proposed method of controlling the algae was the application of an algicide.  However, the Dead Sea is a closed body of water without any outlet and as such is very easily contaminated.  Extensive use of chemicals in numerous future full-scale solar ponds would lead to such contamination of the Dead Sea, which now enjoys a lucrative tourist trade.
A recent experiment has supplied a more promising method for controlling the algae.  To repress the algae cells' capacity for accommodating themselves to environmental changes, the water in the solar pond was first made more saline through evaporation and then diluted by a rapid inflow of fresh water.  This shock reduced the cells' ability to regulate the movement of water through their membranes.  They rapidly absorbed water, resulting in distortions of shape, increase in volume, and impairment to motility.  Their buoyancy adversely affected, the cells sank to the bottom of the pond, where they encountered the hot waters of the storage layer and were destroyed.  This method allows for effective control of nuisance algae while leaving solar ponds as one of the cleanest technologies providing energy for human use.

题目：

Which of the following, if true, would seriously undermine the validity of the conclusions drawn from the experiment described in the last paragraph of the passage?

选项:

A、The algae cells that sank to the bottom of the pond were destroyed only after a time lag of twenty-four hours.
B、The lateral motility of the algae cells that sank to the bottom of the pond was not impaired.
C、The water with which the artificial solar pond was diluted contained microorganisms that kill algae.
D、The algae cells that sank to the bottom of the pond were actually killed by the rapid change in pressure.
E、The higher salinity brought about through evaporation increased the transparency of the upper levels of water in the pond.

答案:

C
5答疑

[Reading Comprehension]

登录查看答疑

试题详情

文章：

    In 1675, Louis XIV established the Parisian seamstresses' guild, the first independent all-female guild created in over 200 years. Guild members could make and sell women's and children's clothing, but were prohibited from producing men's clothing or dresses for court women. Tailors resented the ascension of seamstresses to guild status; seamstresses, meanwhile, were impatient with the remaining restrictions on their right to clothe women.

    The conflict between the guilds was not purely economic, however. A 1675 police report indicated that since so many seamstresses were already working illegally, the tailors were unlikely to suffer additional economic damage because of the seamstresses' incorporation. Moreover, guild membership held very different meanings for tailors and seamstresses. To the tailors, their status as guild members overlapped with their role as heads of household, and entitled them to employ as seamstresses female family members who did not marry outside the trade. The seamstresses, however, viewed guild membership as a mark of independence from the patriarchal family. Their guild was composed not of family units but of individual women who enjoyed unusual legal and economic privileges. At the conflict's center was the issue of whether tailors' female relatives should be identified as family members protected by the tailors' guild or as individuals under the jurisdiction of the seamstresses' guild.

题目：

The author mentions the seamstresses' view of guild membership as a "mark of independence from the patriarchal family" (the highlighted text) primarily in order to

选项:

A、emphasize that the establishment of the seamstresses' guild had implications that were not solely economic
B、illustrate the conflict that existed between tailors and their female family members over membership in the tailors' guild
C、imply that the establishment of the seamstresses' guild ushered in a period of increased economic and social freedom for women in France
D、provide an explanation for the dramatic increase in the number of women working as seamstresses after 1675
E、indicate that members of the seamstresses' guild were financially more successful than were tailors' female relatives protected by the tailors' guild

答案:

A
5答疑

[Reading Comprehension]

登录查看答疑

试题详情

文章：

    More selective than most chemical pesticides in that they ordinarily destroy only unwanted species, biocontrol. agents (such as insects, fungi, and( viruses) eat, infect, or parasitize targeted plant or animal pests. However, biocontrol agents can negatively affect nontarget species by, for example, competing with them for resources: a biocontrol agent might reduce the benefits conferred by a desirable animal species by consuming a plant on which the animal prefers to lay its eggs. Another example of indirect negative. consequcnces occurred in England when a virus introduced to control rabbits reduced the amount of open ground (because large rabbit populations reduce the ground cover), in turn reducing underground ant nests and triggering the extinction of a blue butterfly that had depended on the nests to shelter its offspring. The paucity of known extinctions or disruptions resulting from indirect interactions may reflect not the infrequency of such mishaps but rather the failure to look for or to detect them: most organisms likely to be adversely affected by indirect interactions are of little or no known commercial value and the events linking a biocontrol agent with an adverse effect are often unclear. Moreover, determining the potential risks of biocontrol agents before they are used is difficult, especially when a nonnative agent is introduced, because, unlike a chemical pesticide, a biocontrol agent may adapt in unpredictable ways. so that it can feed on or otherwise harm new hosts.

题目：

The passage suggests that the author would be most likely to agree with which of the following statements about the use of biocontrol agents?

选项:

A、Biocontrol agent should be used only in cases where chemical pesticides have proven ineffective or overly dangerous.
B、Extinctions and disruptions resulting from the use of biocontrol agents are likely to have increasingly severe commercial consequences.
C、The use of biocontrol agents does not require regulation as stringent as that required by the use of chemical pesticides.
D、The use of biocontrol agents may even-finally supersede the use of chemical pesticides in controlling unwanted species.
E、The risks of using native biocontrol agents may be easier to predict than the risks of using nonnative biocontrol agents.

答案:

E
5答疑

[Critical Reasoning]

登录查看答疑

试题详情

题目：

The Maxilux car company’s design for its new luxury model, the Max 100, included a special design for the tires that was intended to complement the model’s image. The winning bid for supplying these tires was submitted by Rubco. Analysts concluded that the bid would only just cover Rubco’s costs on the tires, but Rubco executives claim that winning the bid will actually make a profit for the company.

Which of the following, if true, most strongly justifies the claim made by Rubco’s executives?

选项:

A、In any Maxilux model, the spare tire is exactly the same make and model as the tires that are mounted on the wheels.
B、Rubco holds exclusive contracts to supply Maxilux with the tires for a number of other models made by Maxilux.
C、The production facilities for the Max 100 and those for the tires to be supplied by Rubco are located very near each other.
D、When people who have purchased a carefully designed luxury automobile need to replace a worn part of it, they almost invariably replace it with a part of exactly the same make and type.
E、When Maxilux awarded the tire contract to Rubco, the only criterion on which Rubco’s bid was clearly ahead of its competitors’ bids was price.

答案:

D
5答疑

[Critical Reasoning]

登录查看答疑

试题详情

题目：

Although there is no record of poet Edmund Spenser’s parentage, we do know that as a youth Spenser attended the Merchant Tailors’ School in London for a period between 1560 and 1570. Records from this time indicate that the Merchant Tailors’ Guild then had only three members named Spenser: Robert Spenser, listed as a gentleman; Nicholas Spenser, elected the Guild’s Warden in 1568; and John Spenser, listed as a “journeyman cloth-maker.” Of these, the last was likely the least affluent of the three—and most likely Edmund’s father, since school accounting records list Edmund as a scholar who attended the school at a reduced fee.

Which of the following is an assumption on which the argument depends?

选项:

A、Anybody in sixteenth century London who made clothing professionally would have had to be a member of the Merchant Tailors’ Guild.
B、The fact that Edmund Spenser attended the Merchant Tailors’ School did not necessarily mean that he planned to become a tailor.
C、No member of the Guild could become Guild warden in sixteenth century London unless he was a gentleman.
D、Most of those whose fathers were members of the Merchant Tailors’ Guild were students at the Merchant Tailors’ School.
E、The Merchant Tailors’ School did not reduce its fees for the children of the more affluent Guild members.

答案:

E
5答疑

[Sentence Correction]

登录查看答疑

试题详情

题目：

Developed by Pennsylvania's Palatine Germans about 1750, they made Conestoga wagons with high wheels capable of crossing rutted roads, muddy flats, and the nonroads of the prairie and they had a floor curved upward on either end so as to prevent cargo from shifting on steep grades.

选项:

A、 they made Conestoga wagons with high wheels capable of crossing rutted roads, muddy flats, and the nonroads of the prairie and they had a floor curved upward on either end so as to prevent
B、 they made Conestoga wagons, which had high wheels capable of crossing rutted roads, muddy flats, and the nonroads of the prairie, and floors curved upward on their ends so that they prevented
C、 Conestoga wagons, with high wheels capable of crossing rutted roads, muddy flats, and the nonroads of the prairie, and had a floor that was curved upward at both ends to prevent
D、 Conestoga wagons had high wheels capable of crossing rutted roads, muddy flats, and the nonroads of the prairie, and a floor that was curved upward at both ends to prevent
E、 Conestoga wagons had high wheels capable of crossing rutted roads, muddy flats, and the nonroads of the prairie and floors curving upward at their ends so that it prevented

答案:

D
0评分
787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
2403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
2634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
922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
2112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
1452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
944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
974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
229637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
236761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