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[Critical Reasoning]

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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 California today, Hispanics under the age of eighteen account for more than 43 percent, compared with a decade ago, when it was about 35 percent.

选项:

A、In California today, Hispanics under the age of eighteen account for more than 43 percent, compared with a decade ago, when it was about 35 percent.
B、Of the Californians under the age of eighteen, today more than 43 percent of them are Hispanic, compared with a decade ago, when it was about 35 percent.
C、Today, more than 43 percent of Californians under the age of eighteen are Hispanic, compared with about 35 percent a decade ago.
D、Today, compared to a decade ago, Californians who are Hispanics under the age of eighteen account for more than 43 percent, whereas it was about 35 percent.
E、Today, Hispanics under the age of eighteen in California account for more than 43 percent, unlike a decade ago, when it was about 35 percent.

答案:

C
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题目：

The first trenches that were cut into a 500-acre site at Tell Hamoukar, Syria, have yielded strong evidence for centrally administered complex societies in northern regions of the Middle East that were arising simultaneously with but independently of the more celebrated city-states of southern Mesopotamia, in what is now southern Iraq.

选项:

A、that were cut into a 500-acre site at Tell Hamoukar, Syria, have yielded strong evidence for centrally administered complex societies in northern regions of the Middle East that were arising simultaneously with but
B、that were cut into a 500-acre site at Tell Hamoukar, Syria, yields strong evidence that centrally administered complex societies in northern regions of the Middle East were arising simultaneously with but also
C、having been cut into a 500-acre site at Tell Hamoukar, Syria, have yielded strong evidence that centrally administered complex societies in northern regions of the Middle East were arising simultaneously but
D、cut into a 500-acre site at Tell Hamoukar, Syria, yields strong evidence of centrally administered complex societies in northern regions of the Middle East arising simultaneously but also
E、cut into a 500-acre site at Tell Hamoukar, Syria, have yielded strong evidence that centrally administered complex societies in northern regions of the Middle East arose simultaneously with but

答案:

E
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题目：

In addition to her work on the Miocene hominid fossil record, Mary Leakey contributed to archaeology through her discovery of the earliest direct evidence of hominid activity and through her painstaking documentation of East African cave paintings.

选项:

A、 Mary Leakey contributed to archaeology through her discovery of the earliest direct evidence of hominid activity and through her painstaking documentation of
B、 Mary Leakey contributed to archaeology by her discovery of the earliest direct evidence of hominid activity and painstakingly documenting
C、 Mary Leakey was a contributor to archaeology by discovering the earliest direct evidence of hominid activity and with her painstaking documentation of
D、 Mary Leakey's contributions to archaeology include her discovery of the earliest direct evidence of hominid activity and painstakingly documenting
E、 Mary Leakey's contributions to archaeology include her discovering the earliest direct evidence of hominid activity and painstaking documentation of

答案:

A
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题目：

Beatrix Potter, in her book illustrations, carefully coordinating them with her narratives, capitalized on her keen observation and love of the natural world.

选项:

A、Beatrix Potter, in her book illustrations, carefully coordinating them with her narratives,
B、In her book illustrations, carefully coordinating them with her narratives, Beatrix Potter
C、In her book illustrations, which she carefully coordinated with her narratives, Beatrix Potter
D、Carefully coordinated with her narratives, Beatrix Potter, in her book illustrations
E、Beatrix Potter, in her book illustrations, carefully coordinated them with her narratives and

答案:

C
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78浏览

[Undefined]

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Club X has more than 10 but fewer than 40 members. Sometimes the members sit at tables with 3 members at one table and 4 members at each of the other tables, and sometimes they sit at tables with 3 members at one table and 5 members at each of the other tables. If they sit at tables with 6 members at each table except one and fewer than 6 members at that one table, how many members will be at the table that has fewer than 6 members?
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89浏览

[Undefined]

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A photography dealer ordered 60 Model X cameras to be sold for $250 each, which represents a 20 percent markup over the dealer's initial cost for each camera. Of the cameras ordered, 6 were never sold and were returned to the manufacturer for a refund of 50 percent of the dealer's initial cost. What was the dealer's approximate profit or loss as a percent of the dealer's initial cost for the 60 cameras?
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0评分
25663浏览

[Undefined]

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Analytical!
请问may老师，这题该用什么思路来做？
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32732浏览

[Undefined]

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Analytical!
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1评分
34706浏览

[Undefined]

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Analytical!
请问老师，这道题为什么second part是”evidence”? 还有、不确定First part到底是background info还是premise?
1评分
34699浏览

[Undefined]

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Analytical!
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1评分
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Analytical!
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157浏览

[OG19]

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If mn ≠ 0 and 25 percent of n equals percent of m, what is the value of ?
这道题问一下小梅老师 我感觉是题写错了吧 没有答案好像
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[Undefined]

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The author cites the fact that the Rio Grande pueblos were never formally withdrawn from public lands primarily in order to do which of the following?
想问下张慧雯老师
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444浏览

[Undefined]

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With which of the following characterizations of Lebsock’s contribution to the controversy concerning women’s status in the nineteenth-century United States would the author of the passage be most likely to agree?
想问一下张慧雯老师，这道题我应该如何定位找出答案呢，是应该在第一次出现nineteen century时女性的status后面寻找答案吗，然后还想请教一下做阅读题定位的小技巧
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