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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 World Wildlife Fund has declared that global warming, a phenomenon most scientists agree to be caused by human beings in burning fossil fuels, will create havoc among migratory birds by altering the environment in ways harmful to their habitats.
通过意义排除AD 错选E 由于对C的语法结构存在疑问。此题的C选项是否存在省略的成分？实际补充完整的句子成分应该是that most scientists agree that（phenomenon）is caused by 吗？这种先行词不作为当前从句的主要成分，而在后面第二层从句中才出现是否可以接受？我对于B的排除也是感觉that的出现不符合语法，请问这可以作为差异吗？
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The Arthritis Research Institute of America advises women of color that they have twice the likelihood to get osteoarthritis of the knee as do White women.
这道题我是根据比较对象排除ce，通过like hood搭配排除a，留下bc，一个是that，一个是of，就根据从句优先原则选了b；但是下面这道题我也根据从句优先原则我在ce中选了c，答案是选的allow sth to do而不用allow that。英老师说是e更加concise，那上面那道我选对的为啥不说d更加concise呢？ 就感觉从句优先原则用不上了，最近老是遇到以前归纳的原则被break，返回去再做以前的题的时候就很容易陷入对原则的怀疑，在想是不是这个原则是故意买的坑，比如从句优先，动词优于名词，带着怀疑的眼光回去做以前做对的，还可能做错…就比如这道我以前绝对不会选错的现在复习居然开始纠结了…该怎么办呀😫
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The computer company registered a $16 million net loss for the year, largely because it was profitable only overseas, where much of their profits were used for paying higher taxes, while continuing to lose money in North America.
金idol，这道题abd我都是用过代词指代有问题排除了，留下ce权衡，e的这个with结构从语法上来说都是这个公司感觉没错，但是where修饰更紧密所以我prefer了c。但是我不明确这种抉择方法对不对，因为不能确定这个with结构对不对；其次ad里面的while continuing英吉老师说是错的，这个逻辑主语是公司还是前面从句里的much of profits啊？最后就是整句话读完很不能理解那个while是在原因里面转折了一下吗，表示对比？因为他赚钱，又亏钱是这样形成对比吗？
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With no natural predators and expanses of green suburban neighborhoods that allow no hunting, wildlife officials estimate the New Jersey deer population to have grown to exceed 175,000.
老师好，B中的suburban neighborhoods that do not allow doing这部分有错误吗，另外C中的插入语wildlife officials estimate做什么成分呢？谢谢老师～
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About 5 million acres in the United States have been invaded by leafy spurge, a herbaceous plant from Eurasia with milky sap that gives mouth sores to cattle, displacing grasses and other cattle food and rendering rangeland worthless.
感觉A，B，C语义上很难区分。 A displacing and rendering既可以是mikly sap发出，也可以是前面acres被侵略的结果。 B的rendering也可以说是前面整件事的影响，也可以是mikly sap的动作。 C的rendering也可以说是前面整件事带来的影响。 OG讲解里面是通过并列来做的，那A的并列也挺好的，displacing and rendering 补充修饰gives。不知道要怎么做这题。
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Data gathered by weather satellites has been analyzed by scientists, reporting that the Earth's northern latitudes have become about ten percent greener since 1980, due to more vigorous plant growth associated with warmer temperatures and higher levels of atmospheric carbon dioxide.
想问金诩竹老师分析下这题的b和d选项，还有report as having是啥结构，谢谢！
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[GWD]

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The contractor and the engineer agree on the cause of the bridge failure, but both blame the other.
BC该如何判断？觉得C更加说明白了那个人就选了C
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Analytical!
麻烦老师给我解答一下，刚才是我选择B答案纠结了一下，就是顺着读下去that are inseparable很容易理解成修饰social phenomena 主谓不一致，就是that 从句是可以跳跃修饰到emotions 上的吗？这个部分不是很清晰。
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Will the first 10 volumes of a 20-volume encyclopedia fit upright in the bookrack shown above?
(1) x = 50 centimeters
(2) Twelve of the volumes have an average (arithmetic mean) thickness of 5 centimeters.

没懂 请老师讲解
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If $${a}_{1}={1}$$ and $${a}({n}+{1})={1}+frac{1}{a^n}$$ for all $$n geq 1$$, what is the value of $${a}_{5}$$ ?
看不明白题目中有很多括号的意思，请描述一下题目可否?多谢。
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