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题目：

In an attempt to guarantee the security of its innovative water purification method, the company required each employee to sign a confidentiality agreement prohibiting that its water purification methods be disclosed to companies using an analogous purification process.

选项:

A、prohibiting that its water purification methods be disclosed to companies
B、prohibiting them from the disclosing of its water purification methods to any company
C、prohibiting disclosure of its water purification methods to any company
D、that would prohibit them from disclosure of its water purification methods to companies
E、that would prohibit its water purification methods to be disclosed to a company

答案:

C
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题目：

Some anthropologists believe that the genetic homogeneity evident in the world's people is the result of a "population bottleneck"—at some time in the past our ancestors suffered an event, greatly reducing their numbers and thus our genetic variation.

选项:

A、at some time in the past our ancestors suffered an event, greatly reducing their numbers
B、that at some time in the past our ancestors suffered an event that greatly reduced their numbers
C、that some time in the past our ancestors suffered an event so that their numbers were greatly reduced,
D、some time in the past our ancestors suffered an event from which their numbers were greatly reduced
E、some time in the past, that our ancestors suffered an event so as to reduce their numbers greatly,

答案:

B
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题目：

Although the discount stores in Goreville's central shopping district are expected to close within five years as a result of competition from a SpendLess discount department store that just opened, those locations will not stay vacant for long.  In the five years since the opening of Colson's, a nondiscount department store, a new store has opened at the location of every store in the shopping district that closed because it could not compete with Colson's.
 
Which of the following, if true, most seriously weakens the argument?

选项:

A、Many customers of Colson's are expected to do less shopping there than they did before the SpendLess store opened.
B、Increasingly, the stores that have opened in the central shopping district since Colson's opened have been discount stores.
C、At present, the central shopping district has as many stores operating in it as it ever had.
D、Over the course of the next five years, it is expected that Goreville's population will grow at a faster rate than it has for the past several decades.
E、Many stores in the central shopping district sell types of merchandise that are not available at either SpendLess or Colson's.

答案:

B
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题目：

In general, jobs are harder to get in times of economic recession because many businesses cut back operations.  However, any future recessions in Vargonia will probably not reduce the availability of teaching jobs at government-funded schools.  This is because Vargonia has just introduced a legal requirement that education in government-funded schools be available, free of charge, to all Vargonian children regardless of the state of the economy, and that current student-teacher ratios not be exceeded.
 
Which of the following, if true, most strengthens the argument?

选项:

A、The current student-teacher ratio at Vargonia's government-funded schools is higher than it was during the most recent period of economic recession.
B、During recent periods when the Vargonian economy has been strong, almost 25 percent of Vargonian children have attended privately funded schools, many of which charge substantial fees.
C、Nearly 20 percent more teachers are currently employed in Vargonia's government-funded schools than had been employed in those schools in the period before the last economic recession.
D、Teachers in Vargonia's government-funded schools are well paid relative to teachers in most privately funded schools in Vargonia, many of which rely heavily on part-time teachers.
E、During the last economic recession in Vargonia, the government permanently closed a number of the schools that it had funded.

答案:

B
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题目：

In the mid-1970's, since birds were overcome by pollution, and routinely falling from the sky above Los Angeles freeways, this prompted officials in California to devise a plan that reduced automobile emissions.

选项:

A、since birds were overcome by pollution, and routinely falling from the sky above Los Angeles freeways, this prompted officials in California to devise a plan that reduced
B、since birds that had been overcome by pollution were routinely falling from the sky above Los Angeles freeways, it prompted officials in California to devise a plan that would reduce
C、birds had been overcome by pollution and routinely fell from the sky above Los Angeles freeways, prompting officials in California to devise a plan that reduced
D、birds overcome by pollution routinely fell from the sky above Los Angeles freeways, prompting officials in California to devise a plan to reduce
E、birds overcome by pollution and routinely falling from the sky above Los Angeles freeways were prompting officials in California to devise a plan to reduce

答案:

D
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Press Secretary:  Our critics claim that the President's recent highway project cancellations demonstrate a vindictive desire to punish legislative districts controlled by opposition parties.  They offer as evidence the fact that 90 percent of the projects canceled were in such districts.  But all of the canceled projects had been identified as wasteful in a report written by respected nonpartisan auditors.  So the President's choice was clearly motivated by sound budgetary policy, not partisan politics.
 
Which of the following is an assumption on which the press secretary's argument depends?

选项:

A、Canceling highway projects was not the only way for the President to punish legislative districts controlled by opposition parties.
B、The scheduled highway projects identified as wasteful in the report were not mostly projects in districts controlled by the President's party.
C、The number of projects canceled was a significant proportion of all the highway projects that were to be undertaken by the government in the near future.
D、The highway projects canceled in districts controlled by the President's party were not generally more expensive than the projects canceled in districts controlled by opposition parties.
E、Reports by nonpartisan auditors are not generally regarded by the opposition parties as a source of objective assessments of government projects.

答案:

B
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题目：

The budget for education reflects the administration's demand that the money is controlled by local school districts, but it can only be spent on teachers, not on books, computers, or other materials or activities.

选项:

A、 the money is controlled by local school districts, but it can only be spent
B、 the money be controlled by local school districts, but it allows them to spend the money only
C、 the money is to be controlled by local school districts, but allowing it only to be spent
D、 local school districts are in control of the money, but it allows them to spend the money only
E、 local school districts are to be in control of the money, but it can only spend it

答案:

B
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题目：

The Achaemenid empire of Persia reached the Indus Valley in the fifth century B.C., bringing the Aramaic script with it, from which was derived both northern and southern Indian alphabets.

选项:

A、 the Aramaic script with it, from which was derived both northern and
B、 the Aramaic script with it, and from which deriving both the northern and the
C、 with it the Aramaic script, from which derive both the northern and the
D、 with it the Aramaic script, from which derives both northern and
E、 with it the Aramaic script, and deriving from it both the northern and

答案:

C
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题目：

Sulfur dioxide, a major contributor to acid rain, is an especially serious pollutant because it diminishes the respiratory system's ability to deal with all other pollutants.

选项:

A、an especially serious pollutant because it diminishes the respiratory system's ability to deal
B、an especially serious pollutant because of diminishing the respiratory system's capability of dealing
C、an especially serious pollutant because it diminishes the capability of  the respiratory system in dealing
D、a specially serious pollutant because it diminishes the capability of  the respiratory system to deal
E、a specially serious pollutant because of diminishing the respiratory system's ability to deal

答案:

A
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题目：

In 1981 children in the United States spent an average of slightly less than two and a half hours a week doing household chores; by 1997 they had spent nearly sixhours a week.

选项:

A、chores; by 1997 they had spent nearly six hours a week
B、chores; by 1997 that figure had grown to nearly six hours a week
C、chores, whereas nearly six hours a week were spent in 1997
D、chores, compared with a figure of nearly six hours a week in 1997
E、chores, that figure growing to nearly six hours a week in 1997

答案:

B
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Running at their respective constant rates, machine X takes 2 days longer to produce w widgets than machine Y. At these rates, if the two machines together produce 5/4 w widgets in 3 days, how many days would it take machine X alone to produce 2w widgets?
提问小梅老师：问题请看图片
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If P(r)=8r/(1-r), for what value of r does P(r)=1/2(P(3))?
提问小梅老师：这道题我算的结果为-3 是不是答案错了？
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[Undefined]

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Reid took 1 hour to cycle from his home to his college.

The graph shows Reed's distance from his college during
That hour. Reid's average speed for the last 15 minutes
Of the hour was how many kifometers per hour greater
Than his average speed for the first 45 minutes?
提问小梅老师：这道题系统里没有答案 我算的B 是否正确？
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AB
In the correctly worked addition problem shown, where
the sum of the two-digit positive integers AB and BA is
the three-digit integer AAC, and A, B, and C are different digits, what is the units digit of the integer AAC?
提问小梅老师：这道题答案是不是c=0 A是1 B是9 只有这一种情况满足 答案错误？
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For a certain race, 3 teams were allowed to enter 3 members each. A team earned points whenever one of its members finished in nth place, where .  There were no ties, disqualifications, or withdrawals.  If no team earned more than 6 points, what is the least possible score a team could have earned?
提问小梅老师： 这道题答案是不是3？ 系统给的提问小梅老师：4 错了吧 我看您讲解是3 因为总15 2组最大是6 第三组最小是3
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[Undefined]

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If ½d - 9½ = 2d, then d =o-fareast
提问小梅老师：这道题答案有问题吧 给的D 我做的结果是B-3
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If k is a positive integer, is k the square of an integer?
(1)   k is divisible by 4.
(2) k is divisible by exactly 4 different prime numbers.
提问小梅老师：老师这道题我也觉得有争议 主要是条件2的理解 它的意思如果是k有4个不同的质因子 那就选E；但是我的理解是k由4个不同的质数相乘 那它一定不是一个数的平方 所以我就选的B
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[Undefined]

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Juan bought some paperback books that cost $8 each and some hardcover books that cost $25 each. If Juan bought more than 10 paperback books, how many hardcover books did he buy?
(1)   The total cost of the hardcover books that Juan bought was at least $150.
(2)   The total cost of all the books that Juan bought was less than $260.
请小梅老师回答一下：老师这道题您看一下 我算出来是E 我觉得hard 可以是3/4/5/6 两个条件和一起也不能求出。
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[Undefined]

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Analytical!
为什么答案是C啊，第二个式子取n=1是不对的吧
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[Undefined]

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If –2x ＞ 3y, is x negative?

(1) y ＞ 0

(2) 2x + 5y – 20 = 0
问一下小梅老师 这道题条件二 我只能得出2x小于-3y 带入条件二 -3y+5y-20小于0 2y小于20 y小于10 无法得出x是否为负。
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