问答

9答疑

[Sentence Correction]

登录查看答疑

试题详情

题目：

Researchers in Germany have unearthed 400,000-year-old wooden spears from what it appears was an ancient lakeshore hunting ground as stunning evidence of human ancestors who systematically hunted big game much earlier than believed.

选项:

A、it appears was an ancient lakeshore hunting ground as stunning evidence of human ancestors who
B、it appears had been an ancient lakeshore hunting ground and is stunning evidence that human ancestors
C、it appears to have been an ancient lakeshore hunting ground and is stunning evidence that human ancestors
D、appears to be an ancient lakeshore hunting ground, stunning evidence that human ancestors
E、appears that it is an ancient lakeshore hunting ground, stunning evidence of human ancestors who

答案:

D
9答疑

[Critical Reasoning]

登录查看答疑

试题详情

题目：

Community activist:  If Morganville wants to keep its central shopping district healthy, it should prevent the opening of a huge SaveAll discount department store on the outskirts of Morganville.  Records from other small towns show that whenever SaveAll has opened a store outside the central shopping district of a small town, within five years the town has experienced the bankruptcies of more than a quarter of the stores in the shopping district.
 
The answer to which of the following would be most useful for evaluating the community activist's reasoning?

选项:

A、Have community activists in other towns successfully campaigned against the opening of a SaveAll store on the outskirts of their towns?
B、Do a large percentage of the residents of Morganville currently do almost all of their shopping at stores in Morganville?
C、In towns with healthy central shopping districts, what proportion of the stores in those districts suffer bankruptcy during a typical five-year period?
D、What proportion of the employees at the SaveAll store on the outskirts of Morganville will be drawn form Morganville?
E、Do newly opened SaveAll stores ever lose money during their first five years of operation?

答案:

C
9答疑

[Sentence Correction]

登录查看答疑

试题详情

题目：

To develop more accurate population forecasts, demographers have to know a great deal more than now about the social and economic determinants of fertility.

选项:

A、have to know a great deal more than now about the social and economic
B、have to know a great deal more than they do now about the social and economical
C、would have to know a great deal more than they do now about the social and economical
D、would have to know a great deal more than they do now about the social and economic
E、would have to know a great deal more than now about the social and economic

答案:

D
9答疑

[Sentence Correction]

登录查看答疑

试题详情

题目：

In some species of cricket, the number of chirps per minute used by the male for attracting females rise and fall in accordance with the surrounding temperature, and they can in fact serve as an approximate thermometer.

选项:

A、 for attracting females rise and fall in accordance with the surrounding temperature, and they can in fact serve
B、 for attracting females rises and falls in accordance with the surrounding temperature, which can in fact serve
C、 in attracting females rise and fall in accordance with the surrounding temperature, in fact possibly serving
D、 to attract females rises and falls in accordance with the surrounding temperature, and it can in fact serve
E、 to attract females rises and falls in accordance with the surrounding temperature, in fact possibly serving

答案:

D
9答疑

[Sentence Correction]

登录查看答疑

试题详情

题目：

Imported into Massachusetts form Europe in 1869, the gypsy moth was used by a French scientist in an attempt at developing a strong strain of silk-producing insects, crossing gypsy moths with adult silkworms.

选项:

A、Imported into Massachusetts from Europe in 1869, the gypsy moth was used by a French scientist in an attempt at developing a strong strain of silk-producing insects, crossing gypsy moths with adult silkworms.
B、Imported into Massachusetts form Europe in 1869, a French scientist was attempting to develop a strong strain of silk-producing insects by crossing gypsy moths with adult silkworms.
C、To cross gypsy moths with adult silkworms, in attempting the development of a strong strain of silk-producing insects, a French scientist in 1869 imported the gypsy moth into Massachusetts from Europe.
D、The gypsy moth was imported into Massachusetts from Europe in 1869 by a French scientist attempting to develop a strong strain of silk-producing insects by crossing gypsy moths with adult silkworms.
E、In an attempt at the development of a strong strain of silk-producing insects, a French scientist, importing the gypsy moth from Europe into Massachusetts in 1869 in order to cross gypsy moths and adult silkworms.

答案:

D
9答疑

[Critical Reasoning]

登录查看答疑

试题详情

题目：

Environmental organizations want to preserve the land surrounding the Wilgrinn Wilderness Area from residential development.  They plan to do this by purchasing that land from the farmers who own it.  That plan is ill-conceived:  if the farmers did sell their land, they would sell it to the highest bidder, and developers would outbid any other bidders.  On the other hand, these farmers will never actually sell any of the land, provided that farming it remains viable.  But farming will not remain viable if the farms are left unmodernized, and most of the farmers lack the financial resources modernization requires.  And that is exactly why a more sensible preservation strategy would be to assist the farmers to modernize their farms to the extent needed to maintain viability.
 
In the argument as a whole, the two boldface proportions play which of the following roles?

选项:

A、The first presents a goal that the argument rejects as ill-conceived; the second is evidence that is presented as grounds for that rejection.
B、The first presents a goal that the argument concludes cannot be attained; the second is a reason offered in support of that conclusion.
C、The first presents a goal that the argument concludes can be attained; the second is a judgment disputing that conclusion.
D、The first presents a goal, strategies for achieving which are being evaluated in the argument; the second is a judgment providing a basis for the argument's advocacy of a particular strategy.
E、The first presents a goal that the argument endorses; the second presents a situation that the argument contends must be changed if that goal is to be met in the foreseeable future.

答案:

D
9答疑

[Sentence Correction]

登录查看答疑

试题详情

题目：

Soaring television costs accounted for more than half the spending in the presidential campaign of 1992, a greater proportion than it was in any previous election.

选项:

A、a greater proportion than it was
B、a greater proportion than
C、a greater proportion than they have been
D、which is greater than was so
E、which is greater than it has been

答案:

B
9答疑

[Sentence Correction]

登录查看答疑

试题详情

题目：

Fossils of the arm of a sloth found in Puerto Rico in 1991, and dated at 34 million years old, made it the earliest known mammal of the Greater Antilles Islands.

选项:

A、sloth found in Puerto Rico in 1991, and dated at 34 million years old, made it the earliest known mammal of
B、sloth, that they found in Puerto Rico in 1991, has been dated at 34 million years old, thus making it the earliest mammal known on
C、sloth that was found in Puerto Rico in 1991, was dated at 34 million years old, making this the earliest known mammal of
D、sloth, found in Puerto Rico in 1991, have been dated at 34 million years old, making the sloth the earliest known mammal on
E、sloth which, found in Puerto Rico in 1991, was dated at 34 million years old, made the sloth the earliest known mammal of

答案:

D
9答疑

[Sentence Correction]

登录查看答疑

试题详情

题目：

Some scientists contend that many species of dinosaur had a metabolism more like a warm-blooded mammal's than a cold-blooded reptile's.

选项:

A、that many species of dinosaur had a metabolism more like
B、that the metabolism of many dinosaur species were more like
C、that the metabolisms of many species of dinosaurs were more like those of
D、there were many species of dinosaurs that had metabolisms more like those of
E、there were many dinosaur species that had a metabolism more like that of

答案:

A
9答疑

[Critical Reasoning]

登录查看答疑

试题详情

题目：

Which of the following, if true, provides evidence that most logically completes the argument below?
 
According to a widely held economic hypothesis, imposing strict environmental regulations reduces economic growth.  This hypothesis is undermined by the fact that the states with the strictest environmental regulations also have the highest economic growth.  This fact does not show that environmental regulations promote growth, however, since ______.

选项:

A、those states with the strictest environmental regulations invest the most in education and job training
B、even those states that have only moderately strict environmental regulations have higher growth than those with the least-strict regulations
C、many states that are experiencing reduced economic growth are considering weakening their environmental regulations
D、after introducing stricter environmental regulations, many states experienced increased economic growth
E、even those states with very weak environmental regulations have experienced at least some growth

答案:

A
0评分
1907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
4960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
5625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
1895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
4093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
2861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
1899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
1986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
423799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
430936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