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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
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[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：

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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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
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[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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The passage is primarily concerned with
这道题我在AB里面纠结。 A： 呈现不同团体的动机的观点of those 提议的某个Legislation（读题的时候这个those我打了问号，不知道这里是指谁，如果是指Legislation，那文章始终不都是围绕着一个Legislation再聊？ 很矛盾。） B说的是 对比理由of 不同团体的关于考虑他们的立场关于某个被提议的Legislation（B我不确定的点是感觉没读到不同团体的聊他们的立场） 请老师辨析。 还有关于Present 和contrast这两个动作，有时候会搞不清楚。感觉present 是作者在摆事实；A XXX. B XXX。但contrast是在比较，会有像unlike A， B XX的类似的逻辑。 就这篇文章，怎么能读出作者是在比较呢？谢谢！
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Whereas lines of competition are clearly defined in the more established industries, in the Internet industry they are blurred and indistinct, as companies that compete one day may be partners the next.
思路：排除DE因为比较的对象不对。C里where they are blurred and indistinct 这个they是lines 和这个指代距离很远， 不太好，排除。AB很纠结啊。 AB的差异： 1. 尽管还是 鉴于；放过。 2. 是竞争的公司 还是公司that compete. 问题1. A比较好的原因是公司的compete动作要和 may be partners 形成对比么？ 但是competing companies读起来的意思就成了竞争的公司。 麻烦老师辨析这里！ 2. Whereas在GMAT中就表示让步么？不和although做辨析? 谢谢
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Analytical!
这里的时态不理解。为什么后面是would have 是虚拟语气的话前面不应该是had gone吗？
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Analytical!
早安麻烦老师帮我解答一下61题，我不懂这个解释。我的思路是：9个人两组，人数多那一组最多不能超过6个人，那么一共有两种分法 4 5和3 6 。然后结合题目要求人多的那一组必须包含固定的五个人 a b c e f , 如果是 4 5 分 多的那一组只能是这五个人 那分法是固定的。如果是 3 6 分 六人组里面固定五个人 剩下一个从剩下的四个人里选一个搭配是 C 41 ,所以一共有四种分法 。总共五种分法满足题目要求 所以我觉得这个概率应该是 5/210
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Analytical!
麻烦老师给我解答一下68题，如图例举的是十个点里面选六个的所有情况，那肯定包含一种情况是六个点相邻的，这种情况就不能构成一个六边形，所以这个答案是否有点问题？还是我哪里想错了呢？
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Analytical!
Such as 是插入语 which为什么不能指代wild places？怎么判断用限定还是非限定性从句？
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Analytical!
我能判断出的： A . but also 单独出现的时候表示转折（不太确定这里） B. 留着了，B让我看着不顺的地方是 主句的also 感觉是和前定从呼应，说不上是什么错，但.. C. 原因状从because 后不是完整句子 D. 比较对象不一致， 应该是...as the Moon (has) E. 我选了E，感觉句子说的很清晰，唯一心有余悸的就是这个so, 选的时候 把so 当做了副词看 问题： 1.E的不好是因为 so 表示“所以”的意思时，是连词要连接2个完整句么？ 2. 请老师讲解B 也欢迎纠正我做题思路的错误 多谢❤️！
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Analytical!
如果一个句子里面有过去时和现在完成时，这两个动作哪个是先发生的？ 如果一个句子里面有过去时和过去完成时，这两个动作哪个是先发生的？ 如果句子中间是用；分开的的两个句子时态还会相互影响吗？ 这个题目里面after是介词不是时间状语从句对吗？
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Analytical!
"思路： -觉得同位语比which好，排除AB -D的that was not successful有歧义 因为可 修饰到kings或者是achievement 上；排除 -CE里面 觉得C好 but后面虽然省略了主语 但这句的主语就只有other S kings"；it就是指前面的那个事，觉得没毛病； 我的问题是：（1）C这里没有E好的的原因是 but之后没有主语么 ？（2）E里面 "without success"修饰的是谁呢？是other S kings， 还是other S kings的这个动作？像 主谓宾 with xxx这种结构，with在最后的话 一般修饰的是啥？ 谢谢老师！
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A certain roller coaster has 3 cars, and a passenger is equally likely to ride in any 1 of the 3 cars each time that passenger rides the roller coaster.  If a certain passenger is to ride the roller coaster 3 times, what is the probability that the passenger will ride in each of the 3 cars?
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