问答

1答疑

[Sentence Correction]

试题详情

题目:

A Labor Department study states that the numbers of women employed outside the home grew by more than a thirty-five percent increase in the past decade and accounted for more than sixty-two percent of the total growth in the civilian work force.

选项:

A、numbers of women employed outside the home grew by more than a thirty-five percent increasenumbers of women employed outside the home grew more than thirty-five percent
B、numbers of women employed outside the home were raised by more than thirty-five percent
C、number of women employed outside the home increased by more than thirty-five percent
D、number of women employed outside the home was raised by more than a thirty-five percent increase

答案:

D
1答疑

[Problem Solving]

试题详情

题目:

If x2 – 2 < 0, which of the following specifies all the possible values of x?

选项:

A、0 < x < 2
B、
C、
D、–2 < x < 0
E、–2 < x < 2

答案:

C
1答疑

[Critical Reasoning]

试题详情

题目:

Commentator: The theory of trade retaliation states that countries closed out of any of another country’s markets should close some of their own markets to the other country in order to pressure the other country to reopen its markets. If every country acted according to this theory, no country would trade with any other.

The commentator’s argument relies on which of the following assumptions?

选项:

A、No country actually acts according to the theory of trade retaliation.
B、No country should block any of its markets to foreign trade.
C、Trade disputes should be settled by international tribunal.
D、For any two countries, at least one has some market closed to the other.
E、Countries close their markets to foreigners to protect domestic producers.

答案:

D
1答疑

[Reading Comprehension]

试题详情

文章:

Two recent publications offer different assessments of the career of the famous British nurse Florence Nightingale. A book by Anne Summers seeks to debunk the idealizations and present a reality at odds with Nightingale's heroic reputation. According to summers, Nightingale's importance during the Crimean War has been exaggerated: not until near the war's end did she become supervisor of the female nurses. Additionally, summers writes that the contribution of the nurses to the relief of the wounded was at best marginal. The prevailing problems of military medicine were caused by army organizational practices, and the addition of a few nurses to the medical staff could be no more than symbolic. Nightingale’s place in the national pantheon, summers asserts, is largely due to the propagandist’s efforts of contemporary newspaper reporters.
By contrast, the editors of a new volume of Nightingale's letters view Nightingale as a person who significantly influenced not only her own age but also subsequent generations. They highlight her ongoing efforts to reform sanitary conditions after the war. For example, when she learned that peacetime Living conditions in British barracks were so horrible that the death rate of enlisted men far exceeded that of neighboring avian populations, she succeeded in persuading the government to establish a Royal Commission on the Health of the Army. She used sums raised through pubic contributions to found a nurses' training hospital in London. Even in administrative matters, the editors assert, her practical intelligence was formidable: as recently as 1947 the British Army's medical services were still using the cost-accounting system she had devised in the 1860's.
I believe that the evidence of her letters supports continued respect for Nightingale's brilliance and creativity. When counseling a village schoolmaster to encourage children to use their faculties of observation, she sounds Ike a modern educator. Her insistence on classifying the problems of the needy in order to devise appropriate treatments is similar to the approach of modern social workers. In sum, although Nightingale may not have achieved al of her goals during the Crimean War, her breadth of vision and ability to realize ambitious projects have earned her an eminent place among the ranks of social pioneers.

题目:

in the last paragraph, the author is primarily concerned with

选项:

A、summarizing the arguments about Nightingale presented in the first two paragraphs 
B、refuting the view of Nightingale's career presented in the preceding paragraph 
C、analyzing the weaknesses of the evidence presented elsewhere in the passage 
D、citing evidence to support a view of Nightingale's career 
E、correcting a factual error occurring in one of the works under review

答案:

D
1答疑

[Data Sufficiency]

试题详情

题目:

                             
In the triangle above, is x > 90?
(1)   a2 + b2 < 15
(2)   c > 4
楢楤

选项:

答案:

C
1答疑

[Sentence Correction]

试题详情

题目:

Diabetes, together with its serious complications, ranks as the nation’s third leading cause of death, surpassed only by heart disease and cancer.

选项:

A、ranks as the nation’s third leading cause of death, surpassed only
B、rank as the nation’s third leading cause of death, only surpassed
C、has the rank of the nation’s third leading cause of death, only surpassed
D、are the nation’s third leading causes of death, surpassed only
E、have been ranked as the nation’s third leading causes of death, only surpassed

答案:

A
1答疑

[Reading Comprehension]

试题详情

题目:

The author of the passage mentions &#147;escape velocity&#148; (see line 22) in order to help explain which of the following?

选项:

A、The tendency for asteroids to become smaller rather than larger over time
B、The speed with which impact fragments reassemble when they do not escape an asteroid’s gravitational attraction after a collision
C、The frequency with which collisions among asteroids occur
D、The rotation rates of asteroids smaller than 200 meters in diameter
E、The tendency for large asteroids to persist after collisions

答案:

E
1答疑

[Problem Solving]

试题详情

题目:

If $${a}_{1}={1}$$ and $${a}({n}+{1})={1}+frac{1}{a^n}$$ for all $$n geq 1$$, what is the value of $${a}_{5}$$ ?

选项:

A、$$\frac{3}{8}$$
B、$$\frac{5}{8}$$
C、$$\frac{8}{5}$$
D、$$\frac{5}{3}$$
E、$$\frac{8}{3}$$

答案:

C
1答疑

[Reading Comprehension]

试题详情

文章:

    Grassland songbirds often nest in the same grassland-wetland complexes as waterfowl, particularly in a certain part of those complexes, namely, upland habitats surrounding wetlands. Although some wildlife management procedures directed at waterfowl, such as habitat enhancement or restoration, may also benefit songbirds , the impact of others, especially the control of waterfowl predators, remains difficult to predict. For example, most predators of waterfowl nests prey opportunistic ally on songbird nests, and removing these predators could directly increase songbird nesting success. Alternatively, small mammals such as mice and ground squirrels are important in the diet of many waterfowl-nest predators and can themselves be important predators of songbird nets. Thus. Removing waterfowl-nest predators could affect songbird nesting success through subsequent increases in small-mammal populations.

    In 1995 and 1996, researchers trapped and removed certain waterfowl-nest predators. primary raccoons and striped skunks, then observed subsequent survival rates for songbird nests. Surprisingly. They observed no significant effect on songbird nesting success. This may be due to several factors. Neither raccoons nor striped skunks consume ground squirrels, which are important predators of songbird nests. Thus, their removal may not have led to significant increases in populations of smaller predators. Additionally, both raccoons and striped skunks prefer wetlands and spend little time in upland habitats; removing these species may not have increased the nesting success of songbirds in the uplands enough to allow detection.

题目:

NOTE: You must scroll to read the answer choices for this question.
According to the passage, which of the following is true about the role played by ground squirrels in the ecology of grassland-wetland complexes?

选项:

A、While not important in the diet of raccoons or striped skunks, ground squirrels are a significant source of food for other waterfowl-nest predators.
B、Whereas ground squirrels are typically important as predators of songbird nests, their opportunistic predation on waterfowl nests also has an observable effect on water-fowl nesting success.
C、Although most waterfowl-nest predators prey on small mammals such as mice and ground squirrels, populations of ground squirrels tend to increase quickly enough to com-pensate for this level of predation.
D、Although ground squirrels have been known to prey on songbird nests, a larger portion of their diets is usually provided by predation on waterfowl nests.
E、Since larger predators tend to prefer small mammals to songbird eggs as a food source, a large population of ground squirrels plays an important role in controlling opportunistic predation on songbird nests.

答案:

A
1答疑

[Critical Reasoning]

试题详情

文章:

Twenty percent of the stores in Morganville's downtown shopping district will fail within five years because they will be competing directly with the SaveMart discount department store newly opened in East Morganville. The downtown shopping district has lost business at this rate before and has always completely rebounded. Confidence that it will rebound again from the losses it is now about to suffer is ill founded, however, because __________.

题目:

Which of the following most logically completes the argument below?

选项:

A、the stores likely to be put out of business by direct competition from SaveMart are the downtown shopping district's anchor stores, on whose ability to draw shoppers many of the other downtown stores dependthe bus line that has long connected the downtown area of Morganville with East Morganville has a tradition of carrying shoppers who reside in East Morganville into downtown Morganville to shop 
B、when the downtown shopping district has rebounded before, the business premises of a failed business were typically taken over by a business of the same kind as had been there before
C、SaveMart's business plan for the East Morganville store is based on earning low profits, if any, during the first five years of the store's existence 
D、it is conceivable that the downtown shopping district could shrink substantially without collapsing altogether 

答案:

A
0评分
1293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
3666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
4034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
1339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
3008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
2083浏览

[OG]

The primary purpose of the passage is to
为什么选E不选B
0评分
1336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
1407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
332938浏览

[Undefined]

Analytical!
请问may老师,这题该用什么思路来做?
0评分
340065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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