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题目：

On account of a law passed in 1993, making it a crime punishable by imprisonment that a United States citizen hold gold in the form of bullion or coins, immigrants found that on arrival in the United States they had to surrender all of the gold they had brought with them.

选项:

A、On account of a law passed in 1993, making it a crime punishable by imprisonment that a United States citizen hold
B、With a law passed in 1933 that makes it a crime punishable by imprisonment that a United States citizen hold
C、A law passed in 1933 that made it a crime punishable by imprisonment for a United States citizen holding
D、Because of a law passed in 1933 making it a crime punishable by imprisonment for a United States citizen to hold
E、Due to a law being passed in 1933 that makes it a crime punishable by imprisonment for a United States citizen to hold

答案:

D
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题目：

Since 1975 so many people have been moving to Utah such that Mormons who were once 75 percent of the population are now only accounting for half of it.

选项:

A、so many people have been moving to Utah such that Mormons who were once 75 percent of the population are now only accounting for half of it
B、many people have been moving to Utah, so Mormons once 75 percent of the population are now accounting for only half
C、that many people have been moving to Utah, such that the Mormons that were once 75 percent of the population are now accounting for only half of it
D、many people have been moving to Utah such that the Mormons, who once represented 75 percent of the population, now only account for half
E、so many people have been moving to Utah that the Mormons, who once represented 75 percent of the population, now account for only half

答案:

E
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题目：

It is widely assumed that people need to engage in intellectual activities such as solving crossword puzzles or mathematics problems in order to maintain mental sharpness as they age. In fact, however, simply talking to other people—that is, participating in social interaction, which engages many mental and perceptual skills—suffices. Evidence to this effect comes from a study showing that the more social contact people report, the better their mental skills.

Which of the following, if true, most seriously weakens the force of the evidence cited?

选项:

A、As people grow older, they are often advised to keep exercising their physical and mental capacities in order to maintain or improve them.
B、Many medical conditions and treatments that adversely affect a person’s mental sharpness also tend to increase that person’s social isolation.
C、Many people are proficient both in social interactions and in solving mathematical problems.
D、The study did not itself collect data but analyzed data bearing on the issue from prior studies.
E、The tasks evaluating mental sharpness for which data were compiled by the study were more akin to mathematics problems than to conversation.

答案:

B
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题目：

Navigators have known for thousands of years that the ocean has variable currents, but it is only in the last half century that a reasonably clear picture has emerged of the patterns and causes of ocean currents.

选项:

A、a reasonably clear picture has emerged of the patterns and causes of ocean currents
B、a reasonably clear picture of the patterns of ocean currents and their causes have emerged
C、a reasonably clear picture emerged of ocean currents, their patterns and the causes of them
D、there have emerged a reasonably clear picture of the patterns of ocean currents and what caused them
E、there had emerged a reasonably clear picture of the patterns of ocean currents and their causes

答案:

A
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题目：

Industrialization and modern methods of insect control have improved the standard of living around the globe while at the same time they have introduced some 100,000 dangerous chemical pollutants, having gone virtually unregulated since they were developed more than 50 years ago.

选项:

A、 while at the same time they have introduced some 100,000 dangerous chemical pollutants, having
B、 while at the same time introducing some 100,000 dangerous chemical pollutants that have
C、 while they have introduced some 100,000 dangerous chemical pollutants at the same time, and have
D、 but introducing some 100,000 dangerous chemical pollutants at the same time that have
E、 but at the same time introduce some 100,000 dangerous chemical pollutants, having

答案:

B
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题目：

In the major cities of industrialized countries at the end of the nineteenth century, important public places such as theaters, restaurants, shops, and banks had installed electric lighting, but electricity was in less than one percent of homes, where lighting was still provided mainly by candles or gas.

选项:

A、 electricity was in less than one percent of homes, where lighting was still
B、 electricity was in less than one percent of homes and lighting still
C、 there were less than one percent of homes with electricity, where lighting was still being
D、 there was less than one percent of homes that had electricity, having lighting that was still
E、 less than one percent of homes had electricity, where lighting had still been

答案:

A
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题目：

Retail sales rose 8/10 of 1 percent in August, intensifying expectations that personal spending in the July-September quarter more than doubled that of the 1.4 percent growth rate in personal spending for the previous quarter.

选项:

A、that personal spending in the July-September quarter more than doubled that of
B、that personal spending in the July-September quarter would more than double
C、of personal spending in the July-September quarter, that it more than doubled
D、of personal spending in the July-September quarter, more than doubling that of
E、of personal spending in the July-September quarter, that it would more than double that of

答案:

B
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题目：

For the last five years the Dutch economy has grown faster than Britain, France, or Germany, with the unemployment rate having remained well below that of the other three countries.

选项:

A、Britain, France, or Germany, with the unemployment rate having remained
B、have those of Britain, France, or Germany, and the unemployment rate remaining
C、have Britain, France, and Germany, and the unemployment rate has remained
D、the economy of Britain, France, and Germany, with the unemployment rate that has remained
E、the economies of Britain, France, and Germany, and the unemployment rate has remained

答案:

E
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题目：

In no other historical sighting did Halley's comet cause such a worldwide sensation as did its return in 1910-1911.

选项:

A、did its return in 1910-1911
B、had its 1910-1911 return
C、in its return of 1910-1911
D、its return of 1910-1911 did
E、its return in 1910-1911

答案:

C
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题目：

Marconi's conception of the radio was as a substitute for the telephone, a tool for private conversation; instead, it is precisely the opposite, a tool for communicating with a large, public audience.

选项:

A、Marconi's conception of the radio was as a substitute for the telephone, a tool for private conversation; instead, it is
B、Marconi conceived of the radio as a substitute for the telephone, a tool for private conversation, but which is
C、Marconi conceived of the radio as a tool for private conversation that could substitute for the telephone; instead, it has become
D、Marconi conceived of the radio to be a tool for private conversation, a substitute for the telephone, which has become
E、Marconi conceived of the radio to be a substitute for the telephone, a tool for private conversation, other than what it is,

答案:

C
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[GWD]

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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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[GWD]

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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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[GWD]

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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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[GWD]

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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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[GWD]

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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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