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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
23答疑

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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
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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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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1715浏览

[OG19]

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The diagram shows blocks and in parallel to that there are three more blocks representing the multiplication table. Each block represents alphabets as integers. First row of blanks consists of x, a, b, and c. The second row consists of a, d, e, and f. The third row consists of b, e, g, and h. The last row consists of c, f, h, and j.

In the multiplication table above, each letter represents an integer. What is the value of c ?

  1. c = f
  2. h ≠ 0

老师，首先我对 the multiplication table这个表有啥性质？我对这个知识点很模糊。 网上也搜不到。 第二，图片是我的解题思路 条件1 我只能推出a=0 or c=1 但og解析可以推出a=b=1 c=1 or 2 是如何推出来的？ 条件2 我都不知道再讲啥。。感觉这个条件根本用不到？！ 总之这道题卡住了，希望老师解答下这道题，谢谢！
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8396浏览

[GWD]

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Retailers reported moderate gains in their November sales, as much because of their sales of a year earlier being so bad as that shoppers were getting a head start on buying their holiday gifts.
这道题我在D，E中纠结，的中的过去完成时我觉得不太对，所以给排出了，但是E as bad as that 表达不清楚，没有解释原因的作用，所以不对，这样理解对吗，请老师解答一下
1评分
3951浏览

[GWD]

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At the annual stockholders meeting, investors heard a presentation on the numerous challenges facing the company, including among them the threat from a rival's multibillion-dollar patent-infringement suit and the declining sales for the company's powerful microprocessor chip.
老师，我之前提问过如果B选项改成which include the threat of a rival's multibillion-dollar patent-infringement suit and the decline in sales of, 这样可以选了吗? 你回答说不建议去改选项。但其实我这道题我听过解释了，明白为什么选D更好了。 但我还继续问的原因是我不理解which在这里必须得是就近指代company吗？还是可以指代稍远一点的challenges? 关于GMAT中which一般不都是得就近指代吗？那如果B选项改成我写的那样会不会有指代不清的问题?
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8722浏览

[GWD]

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The single-family house constructed by the Yana, a Native American people who lived in what is now northern California, was conical in shape, its framework of poles overlaid with slabs of bark, either cedar or pine, and banked with dirt to a height of three to four feet.
这道题我选的d，判断平行判断错了，还有我觉得a选项的to a height 形式有点怪, 请老师解答一下，真好道题判断平行的方法，还有to a height
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6924浏览

[GWD]

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Exposure to certain chemicals commonly used in elementary schools as cleaners or pesticides causes allergic reactions in some children.  Elementary school nurses in Renston report that the proportion of schoolchildren sent to them for treatment of allergic reactions to those chemicals has increased significantly over the past ten years.  Therefore, either Renston's schoolchildren have been exposed to greater quantities of the chemicals, or they are more sensitive to them than schoolchildren were ten years ago.
 
Which of the following is an assumption on which the argument depends?
！！！请英吉老师帮忙解答！！！自己在做时最后留下C，D二选一，仔细看C选项的意思，我理解的是“现在会过敏的孩子，比起过去，更不可能被送医院了”，那其表达的意思就应该是现在来医院的孩子少了，但这个描述直接和原文中的“现在比过去有更多孩子来医院”的前提相悖，说反了，相当于是削弱结论，所以排除掉。而D选项是限定了一个条件，强调“孩子会接触到化学物质的机会并没有增加，还是只在学校范围内”，那么和原文背景信息是一致的，可以被认定为原文逻辑链上的一个默认事实，符合英吉老师说过的“其之所以未被写出，是因为作者认为其过于常识，不比特别描述”原则，所以我选了D。但后来仔细想了想C选项为什么对，我能想到的原因是我没理解对选项意思，如果反向翻译，将其理解为“过去，（家长）将过敏孩子送到医院的意愿不比现在少”，那么我是理解这个选项为什么对的，但假如我不能如此理解到选项的正确意思，那考场上该怎么判断呢？另外还请老师能解释一下为什么D选项是错误的，谢谢！
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6422浏览

[GWD]

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Although producer prices rose at an unexpectedly steep rate in September, analysts said that the increase resulted mostly from temporary factors and not necessarily foreshadowing that there would be a resurgence of inflation.
我选的D，and前是temporary factors，所以我认为并列后面也要是名词形式，请老师解答一下为什么D不对
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3913浏览

[GWD]

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At the annual stockholders meeting, investors heard a presentation on the numerous challenges facing the company, including among them the threat from a rival's multibillion-dollar patent-infringement suit and the declining sales for the company's powerful microprocessor chip.
如果B选项改成which include the threat of a rival's multibillion-dollar patent-infringement suit and the decline in sales of, 这样可以选了吗?
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7918浏览

[GWD]

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Although exposure to asbestos is the primary cause of mesothelioma, a slow-developing cancer, researchers believe that infection by the SV40 virus is a contributing cause, since in the United States 60 percent of tissue samples from mesotheliomas, but none from healthy tissue, contain SV40.  SV40 is a monkey virus; however, in 1960 some polio vaccine was contaminated with the virus.  Researchers hypothesize that this vaccine was the source of the virus found in mesotheliomas decades later.
 
Which of the following, if true, most strongly supports the researchers' hypothesis?
老师，可不可以详细讲一下这道题？为什么要选E？E选项里说没有疫苗从来没有受到感染。这个选项怎么可能support assumption呢？
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297742浏览

[Undefined]

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Analytical!
请郭老师看一下这几题 谢谢老师
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297682浏览

[Undefined]

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Analytical!
麻烦郭老师看一下这几题，谢谢老师
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