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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：

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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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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Delta products, Inc., has recently switched at least partly from older technologies using fossil fuels to new technologies powered by electricity.  The question has been raised whether it can be concluded that for a given level of output, Delta's operation now causes less fossil fuel to be consumed than it did formerly.  The answer, clearly, is yes, since the amount of fossil fuel used to generate the electricity needed to power the new technologies is less than the amount needed to power the older technologies, provided that the level of output is held constant.
 
In the argument given, the two boldface portions play which of the following roles?
请教英吉老师，这道题我选了A。因为首先，我觉得第一句黑体字是客观阐明了一种现象或措施，没有对文章起正向或负向的作用，所以E选项的support the conclusion可能不太对；其次，我觉得A选项identify the content of the conclusion的意思，是阐明了文章结论是关于什么内容的，并不是说第一个黑体字就是结论。而由于第一个黑体字的这种现象就是与结论有关的，所以我觉得A对。请老师指出这两点分析的错误，谢谢～
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Analytical!

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Analytical!
How many positive prime numbers are less than integer n? a) 14<n<20。 b) 13<n<17
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[Undefined]

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In an electric circuit, two resistors with resistances x and y are connected in parallel. In this case, if r is the combined resistance of these two resistors, then the reciprocal of r is equal to the sum of the reciprocals of x and y. What is r in terms of x and y ?
我要问的题目在图片里。一道机经题目。 我没有按照机经里的思路做，看不懂。 条件1，不能被2整除，所以m=2K+1 所以最后可算出来 一定能够被4整除 条件2，不能被3整除，所以m=3K+1 or m=3k+2 算出来一定能被3整除 最后结合一定能被12整除，不应该是选E吗?不充分 机经上却说最后可以被2*3*4整除，那个2是什么情况，请求解答
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Archaeologists in Michigan have excavated a Native American camp near Dumaw Creek.  Radiocarbon dating of animal bones found at the site indicates that the camp dates from some time between 1605 and 1755.  However, the camp probably dates to no later than 1630, since no European trade goods were found at the site, and European traders were active in the region from the 1620's onward.
 
Which of the following, if true, most strengthens the argument?
我选A， 原文说商人在1620，A选项说商品比商人早。推出商品早于1620，进一步支持了“camp probably dates to no later than 1630”这个结论
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[OG]

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Previously, Autoco designed all of its cars itself and then contracted with specialized parts suppliers to build parts according to its specifications. Now it plans to include its suppliers in designing the parts they are to build. Since many parts suppliers have more designers with specialized experience than Autoco has, Autoco expects this shift to reduce the overall time and cost of the design of its next new car.

Which of the following, if true, most strongly supports Autoco’s expectation?
我想问问为什么A选项不对？我的理解是：几乎每次parts suppliers送来的作品都需要Autoco从新改造一遍，这增加了时间和成本，现在不需要他们（parts suppliers）设计了，改由Autoco自己设计，那么自然可以节约时间和成本。Ps：金栩竹老师的声音很小，我的手机上听不清，其他老师的声音都还好。
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[GWD]

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The primary purpose of the passage is to discuss the
文章主旨：第一段在讲社会学习的定义：什么情况下社会学习会发生；然后举了个社会学习的例子 发现第二段全在围绕这个例子谈，判定这个例子：社会学习是对某种食物偏好的获取是文章的主旨。 并且第二段第一句讲主旨详细描述。第二段最后一句研究让研究者认为食物偏好不同这个句子是否是主旨呢？不理解这句 第三段我知道在说S做的研究反驳了文章的主旨：鸟通过社会学习避免吃一些有毒的食物。 整篇文章的主旨是否有读错，以及第二段怎么理。麻烦老师讲解下
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Patience Lovell Wright, whose traveling waxworks exhibit preceded Madame Tussaud's work by 30 years, became well known as much because of having an eccentric personality as for having skillfully rendered popular public figures in wax.
老师您好，请问D选项错在哪呢？
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[GWD]

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The author of the passage would be most likely to agree that the "caution" (in the highlighted text) urged by de Ricqlès regarding claims about dinosaur physiology was
请教英老师，为什么不选A选项 呢？unjustified 这一句是“没有被证实”，还是“不合理” 的意思？如果是“没有被证实”，我觉得可以选A，因为正是Ricqle 根据自己的证据无法提出定论，所以才有caution。如何在AD中选择？
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[OG]

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In an electric circuit, two resistors with resistances x and y are connected in parallel. In this case, if r is the combined resistance of these two resistors, then the reciprocal of r is equal to the sum of the reciprocals of x and y. What is r in terms of x and y?
老师，我就是这句话不理解sum of the reciprocals of x and y，为啥是1/r=1/x+1/y啊？那1/r=1/（x+y）怎么用英语表达呢？谢谢
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