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题目：

On Earth, among the surest indications of sunspot cycles are believed to be the rate that trees grow, as seen in the rings visible in the cross sections of their trunks.

选项:

A、On Earth, among the surest indications of sunspot cycles are believed to be the rate that trees grow
B、On Earth, among the surest indications of sunspot cycles are, it is believed, the rate of tree growth
C、On Earth, the rate at which trees grow is believed to be among the surest indications of sunspot cycles
D、Among the surest indications on Earth of sunspot cycles, believed to be the tree growth rate
E、Among the surest indications on Earth of sunspot cycles is believed to be the rate at which trees grow

答案:

E
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题目：

According to recent studies comparing the nutritional value of meat from wild animals and meat from domesticated animals, wild animals have less total fat than do livestock fed on grain and more of a kind of fat they think is good for cardiac health.

选项:

A、wild animals have less total fat than do livestock fed on grain and more of a kind of fat they think is
B、wild animals have less total fat than livestock fed on grain and more of a kind of fat thought to be
C、wild animals have less total fat than that of livestock fed on grain and have more fat of a kind thought to be
D、total fat of wild animals is less than livestock fed on grain and they have more fat of a kind thought to be
E、total fat is less in wild animals than that of livestock fed on grain and more of their fat is of a kind they think is

答案:

B
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题目：

Starfish, with anywhere from five to eight arms, have a strong regenerative ability, and if one arm is lost it quickly replaces it, sometimes by the animal overcompensating and growing an extra one or two.

选项:

A、one arm is lost it quickly replaces it, sometimes by the animal overcompensating and
B、one arm is lost it is quickly replaced, with the animal sometimes overcompensating and
C、they lose one arm they quickly replace it, sometimes by the animal overcompensating,
D、they lose one arm they are quickly replaced, with the animal sometimes overcompensating,
E、they lose one arm it is quickly replaced, sometimes with the animal overcompensating,

答案:

B
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题目：

Heavy commitment by an executive to a course of action, especially if it has worked well in the past, makes it likely to miss signs of incipient trouble or misinterpret them when they do appear.

选项:

A、Heavy commitment by an executive to a course of action, especially if it has worked well in the past, makes it likely to miss signs of incipient trouble or misinterpret them when they do appear.
B、An executive who is heavily committed to a course of action, especially one that worked well in the past, makes missing signs of incipient trouble or misinterpreting ones likely when they do appear.
C、An executive who is heavily committed to a course of action is likely to miss or misinterpret signs of incipient trouble when they do appear, especially if it has worked well in the past.
D、Executives' being heavily committed to a course of action, especially if it has worked well in the past, makes them likely to miss signs of incipient trouble or misinterpreting them when they do appear.
E、Being heavily committed to a course of action, especially one that has worked well in the past, is likely to make an executive miss signs of incipient trouble or misinterpret them when they do appear.

答案:

E
20答疑

[Problem Solving]

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题目：

The charge for a single room at Hotel P  is 25 percent less than the charge for a single room at Hotel R  and 10 percent less than the charge for a single room at Hotel G . The charge for a single room at Hotel R  is what percent greater than the charge for a single room at Hotel G  ?

选项:

A、15%
B、20%
C、40%
D、50%
E、150%

答案:

B
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题目：

A ruined structure found at Aqaba, Jordan, was probably a church, as indicated in its eastward orientation and by its overall plan, as well as artifacts, such as glass oil-lamp fragments, found at the site.

选项:

A、A ruined structure found at Aqaba, Jordan, was probably a church, as indicated in its eastward orientation and by its overall plan, as well as
B、A ruined structure found at Aqaba, Jordan, once probably being a church, was indicated by its eastward orientation, overall plan, and
C、Indicating that a ruined structure found at Aqaba, Jordan, was probably a church were its eastward orientation and overall plan, but also the
D、A ruined structure found at Aqaba, Jordan, was probably a church, as indicates its eastward orientation and overall plan, as well as the
E、That a ruined structure found at Aqaba, Jordan, was probably a church is indicated by its eastward orientation and overall plan, as well as by the

答案:

E
18答疑

[Critical Reasoning]

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题目：

In the year following an eight-cent increase in the federal tax on a pack of cigarettes, sales of cigarettes fell ten percent.  In contrast, in the year prior to the tax increase, sales had fallen one percent.  The volume of cigarette sales is therefore strongly related to the after-tax price of a pack of cigarettes.
 
The argument above requires which of following assumptions?

选项:

A、During the year following the tax increase, the pretax price of a pack of cigarettes did not increase by as much as it had during the year prior to the tax increase.
B、The one percent fall in cigarette sales in the year prior to tax increase was due to a smaller tax increase.
C、The pretax price of a pack of cigarettes gradually decreased throughout the year before and the year after the tax increase.
D、For the year following the tax increase, the pretax price of a pack of cigarettes was not eight or more cents lower than it had been the previous year.
E、As the after-tax price of a pack of cigarettes rises, the pretax price also rises.

答案:

D
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题目：

For protection from the summer sun, the Mojave lived in open-sided, flat-topped dwellings known as shades, each a roof of poles and arrowweed supported by posts set in a rectangle.

选项:

A、each a roof of poles and arrowweed
B、each a roof of poles and arrowweed that are being
C、with each being a roof of poles and arrowweed
D、with roofs of poles and arrowweed to be
E、with roofs of poles and arrowweed that are

答案:

A
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题目：

Even though Clovis points, spear points with longitudinal grooves chipped onto their faces, have been found all over North America, they are named for the New Mexico site where they were first discovered in 1932.

选项:

A、Even though Clovis points, spear points with longitudinal grooves chipped onto their faces, have been found all over North America, they are named for the New Mexico site where they were first discovered in 1932.
B、Although named for the New Mexico site where first discovered in 1932, Clovis points are spear points of longitudinal grooves chipped onto their faces and have been found all over North America.
C、Named for the New Mexico site where they have been first discovered in 1932, Clovis points, spear points of longitudinal grooves chipped onto the faces, have been found all over North America.
D、Spear points with longitudinal grooves that are chipped onto the faces, Clovis points, even though named for the New Mexico site where first discovered in 1932, but were found all over North America.
E、While Clovis points are spear points whose faces have longitudinal grooves chipped into them, they have been found all over North America, and named for the New Mexico site where they have been first discovered in 1932.

答案:

A
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题目：

The remarkable similarity of Thule artifacts throughout a vast region can, in part, be explained as a very rapid movement of people from one end of North America to the other.

选项:

A、The remarkable similarity of Thule artifacts throughout a vast region can, in part, be explained as
B、Thule artifacts being remarkably similar throughout a vast region, one explanation is
C、That Thule artifacts are remarkably similar throughout a vast region is, in part, explainable as
D、One explanation for the remarkable similarity of Thule artifacts throughout a vast region is that there was
E、Throughout a vast region Thule artifacts are remarkably similar, with one explanation for this being

答案:

D
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10517浏览

[GWD]

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For the farmer who takes care to keep them cool, providing them with high-energy feed, and milking them regularly, Holstein cows are producing an average of 2,275 gallons of milk each per year.
ID707 错选D 1、听了讲解录音，老师解释说D选项的错误在于单复数不一致。请问the cow 后面不能用单数动词吗？ 2、时态：一般现在时VS将来时 ，这里都可以吗？还是有优劣之分 请老师帮忙解惑，谢谢
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5347浏览

[OG]

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The letters D, G, I, I, and T can be used to form 5-letter strings such as DIGIT or DGIIT. Using these letters, how many 5-letter strings can be formed in which the two occurrences of the letter I are separated by at least one other letter?
老师您好，这道题我的想法是：用所有的组合减去两个I在一起的组合：5*4*3*2*1-4*3*2*1=96，我是不是错在了计算所有组合可能性的时候没有考虑两个I的顺序？在本题中，两个I的顺序不影响结果，所以不考虑，因此120的总组合数需要除以2对么？关于什么情况下要考虑顺序，什么情况下要除以顺序，我一直搞不太明白，烦请老师详细讲解一下~感谢！
1评分
4715浏览

[Undefined]

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From an experiment using special extrasensory perception cards, each bearing one of a set of symbols, parapsychologist Joseph Banks Rhine claimed statistical proof for subjects who could use thought transference to identify a card in the dealer’s hand.
that在从句中做什么成分呢？proof是名词也跟that吗？
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1576浏览

[Undefined]

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Manufacturers rate batteries in watt-hours; if they rate the watt-hour higher, the longer the battery can be expected to last.
C选项the higher the watt-hour rating里不需要谓语动词吗？
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11156浏览

[Undefined]

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To develop more accurate population forecasts, demographers have to know a great deal more than now about the social and economic determinants of fertility.
ID649: 听了答疑录音很疑惑，有的老师说D有的老师说E。用more than 做比较的时候，到底是哪种表达更好？主语及动词省略更好（简洁行）？还是不省略更好？（准确清晰）
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[OG]

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老师请问：本题的条件2中，5500*0.9*adult人数-4800*0.9*children人数=4860，约简为：55*A-48*C=54，og的答案是用凑数的方法，得到人数：C和A可以是8和6，也可以是63和54，但是我在做题时不可能凑出63和54这样的答案，求问这样一个方程含有两个未知数（未知数限制为整数），要怎么凑出答案？ 同类题还有见下图：
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36689浏览

[GWD]

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After several years of rapid growth, the healthy care company became one of the largest health care providers in the metropolitan area, while it then proved unable to handle the increase in business, falling months behind in its payment to doctors and hospitals.
ID188 错选了A，有两处用法不是很清晰，请老师解惑： 1、but VS while 2、转折连词后面的句子主语省略 VS 主语不省略
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30380浏览

[GWD]

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In California today, Hispanics under the age of eighteen account for more than 43 percent, compared with a decade ago, when it was about 35 percent.
ID228 错选B： 1、B选项错误的原因是因为It 的指代不明确吗？还是其他问题； 2、C 选项的结构省略了哪些，说的好像有点模糊，Compared with 后面的结构不是很理解； 请老师帮忙解答，感谢
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7746浏览

[GWD]

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The growing popularity of computer-based activities was widely expected to result in a decline in television viewing, since it had been assumed that people lack sufficient free time to maintain current television-viewing levels while spending increasing amounts of free time on the computer.  That assumption, however, is evidently false:  in a recent mail survey concerning media use, a very large majority of respondents who report increasing time spent per week using computers report no charge in time spent watching television.
 
Which of the following would it be most useful to determine in order to evaluate the argument?
老师还是帮我看下逻辑链条训练过程有没有问题：逻辑链初步：随着电脑相关各项活动多了起来，人们在free time并不充裕的时候，花在电脑活动上的时间与花在看电视的时间成反比。但这个结论被一项调查驳了，大多数受访者表示每周多出来的花在电脑活动的时间并没有占看电视的时间。 二次提炼：（用电脑的时间 vs 看电视的时间） 在free time不足情况下，是此消彼长；但是，调查的结果是，用电脑时间跟看电视时间并不冲突，花费时间没有互斥关系。所以对于这个冲突，要检查的是，是不是时间范围搞错了
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[GWD]

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In Kravonia, the average salary for jobs requiring a college degree has always been higher than the average salary for jobs that do not require a degree.  Current enrollments in Kravonia's colleges indicate that over the next four years the percentage of the Kravonian workforce with college degrees will increase dramatically.  Therefore, the average salary for all workers in Kravonia is likely to increase over the next four years.
 
Which of the following is an assumption on which the argument depends?
Tina老师 这道题本来想验证一下逻辑连 但发现这道题答案给错了吧？我觉得分分钟杀掉C啊。我先说我想跟您分享的做题思路，望您给出建议：逻辑链：未来4年入学新生多了-->有文凭的劳动力猛增-->未来四年所有劳动力的平均工资会涨。成分作用分析：所有劳动力这个集合是包括了有文凭和美有文凭的两大群体的。需要建立可比性的话，有文凭的说了猛增，没文凭的怎么变化？然后才能导致未来四年的所有劳动力平均工资上涨。所以D
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