GMAT
单选题In a physical education class, 20 students were tested on archery target shooting. These students were then given a two-day training course in archery technique. The students were tested again and showed a 30 percent increase in accuracy. This result p
题目
单选题
In a physical education class, 20 students were tested on archery target shooting. These students were then given a two-day training course in archery technique. The students were tested again and showed a 30 percent increase in accuracy. This result proves that the course was effective in increasing people’s target-shooting accuracy. Which of the following, if true, gives the strongest support to the argument above?
A
The students were all excellent athletes, and excellent athletes tend to be good at target shooting.
B
The first testing session functioned as a practice ,session for the second testing session.
C
The accuracy with which people can shoot arrows is strongly related to the sharpness of their vision.
D
A similar group of students who were also tested on archery target shooting but were not given the course did not show an increase in accuracy.
E
Excellence in archery target shooting is an accomplishment achieved by relatively few of the people who take up the sport.
参考答案和解析
正确答案：
B
解析：
文段由“进行两天的培训课后准确率提高了30％”，得出结论：射击培训课是有效的，如果没有射击培训的学生准确率没有得到提到的话，就从侧面证明了这一结论，故D项是正确的。
文段由“进行两天的培训课后准确率提高了30％”，得出结论：射击培训课是有效的，如果没有射击培训的学生准确率没有得到提到的话，就从侧面证明了这一结论，故D项是正确的。
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相似问题和答案
第1题：
The officer allowed ______.
A. the students to fly the plane all the time
B. all students to fly the plane
C. the students who were not frightened to fly on their own
D. some students to fly a little while
正确答案：D
46．答案为D 此考题为细节题。根据文章第3段首句The officer...allowed them to fly the plane for a few seconds if they were not too frightened to try...，即可断定D正确。
第2题：
There were so many students in the class that the teacher couldn’t talk to them all.翻译
参考答案：教室里有如此多的学生以至于老师不能和每个学生都交流。
第3题：
There were students in the reading room.
A、niether
B、not
C、no
D、none
参考答案：C
第4题：
请阅读Passage2，完成第小题。
Passage 2
Results showed that at least a tenth of the Harvard first-year undergraduates polled admitted to having cheated on an exam prior to starting at the university, while almost half admitted to cheating on their homework. An anonymous survey by Harvard's newspaper has revealed a surprising pattern of academic dishonesty among students entering the US universities.
The survey by The Harvard Crimson was emailed to the incoming first year undergraduates;1,600 students responded. Results showed that at least a tenth of the students polled admitted to having cheated on an exam prior to starting at the university, while almost half admitted to cheating on their homework.
Athletes were apparently the most prone to cheating. 20 percent of students who played a university sport admitted to cheating on an exam compared to 9 percent of students who did not.
The survey also revealed that men were not only more likely to cheat but were also more likely to admit to it.
The results, compared to a previous survey done on the class of 2013, suggested that cheating may be becoming more commonplace. Of the outgoing seniors only 7 percent admitted to cheating in an exam and another 7 percent said they had been dishonest on a take-home test. 32 percent of the seniors said they had cheated on homework during their undergraduate years..
The surveys come in the wake of a cheating scandal at the university which saw 120 students investigated for sharing answers on an exam in 2012. One recent graduate stated: "Cheating was commonplace when I was at Harvard, especially with students in their first year or two. I would say as many as 60 per cent of students took notes into some exams. No one really cared the faculty,well some of them at least, seemed to recognize and yet ignore the problem."
In an email to NBC News, Jeff Neal, a Harvard representative, explained that a committee,made up of faculty, staff and students had been established to tackle cheating, which "is a national problem in American education".
He added: "While the vast majority of Harvard and other students do their work honestly,beginning this year Harvard College has implemented a new, more robust strategy of communicating with all students, particularly first-year students, about the importance--and the ways to achieve--academic integrity."
In a rebuff to critics who say university has become little more than an expensive party, 84 per cent of the responding undergraduates fully expected to prioritize their academics over extracurricular activities, sport, employment and their social lives. Not a single student put academics at the bottom of their list. Not content with confining themselves to their degree subject,59 percent of incoming students expressed a desire to pursue a secondary field of study, and 36
percent hoped to learn a language.
What does the author mean by saying "The results suggested that cheating may be becoming more commonplace." (Para. 4)?
查看材料
Passage 2
Results showed that at least a tenth of the Harvard first-year undergraduates polled admitted to having cheated on an exam prior to starting at the university, while almost half admitted to cheating on their homework. An anonymous survey by Harvard's newspaper has revealed a surprising pattern of academic dishonesty among students entering the US universities.
The survey by The Harvard Crimson was emailed to the incoming first year undergraduates;1,600 students responded. Results showed that at least a tenth of the students polled admitted to having cheated on an exam prior to starting at the university, while almost half admitted to cheating on their homework.
Athletes were apparently the most prone to cheating. 20 percent of students who played a university sport admitted to cheating on an exam compared to 9 percent of students who did not.
The survey also revealed that men were not only more likely to cheat but were also more likely to admit to it.
The results, compared to a previous survey done on the class of 2013, suggested that cheating may be becoming more commonplace. Of the outgoing seniors only 7 percent admitted to cheating in an exam and another 7 percent said they had been dishonest on a take-home test. 32 percent of the seniors said they had cheated on homework during their undergraduate years..
The surveys come in the wake of a cheating scandal at the university which saw 120 students investigated for sharing answers on an exam in 2012. One recent graduate stated: "Cheating was commonplace when I was at Harvard, especially with students in their first year or two. I would say as many as 60 per cent of students took notes into some exams. No one really cared the faculty,well some of them at least, seemed to recognize and yet ignore the problem."
In an email to NBC News, Jeff Neal, a Harvard representative, explained that a committee,made up of faculty, staff and students had been established to tackle cheating, which "is a national problem in American education".
He added: "While the vast majority of Harvard and other students do their work honestly,beginning this year Harvard College has implemented a new, more robust strategy of communicating with all students, particularly first-year students, about the importance--and the ways to achieve--academic integrity."
In a rebuff to critics who say university has become little more than an expensive party, 84 per cent of the responding undergraduates fully expected to prioritize their academics over extracurricular activities, sport, employment and their social lives. Not a single student put academics at the bottom of their list. Not content with confining themselves to their degree subject,59 percent of incoming students expressed a desire to pursue a secondary field of study, and 36
percent hoped to learn a language.
What does the author mean by saying "The results suggested that cheating may be becoming more commonplace." (Para. 4)?
查看材料
A．After the previous survey in 2013, more students are found cheating.
B．More cheating students were under the survey this time.
C．No measures are taken to manage the phenomenon of cheating.
D．Most students don't pay attention to their curricula.
B．More cheating students were under the survey this time.
C．No measures are taken to manage the phenomenon of cheating.
D．Most students don't pay attention to their curricula.
答案：A
解析：
题目中的“The results…．suggested that cheating may be becoming more commonplace．"意为“与此前针对2013班级所做的调查相比，该次调查结果表明作弊现象可能会越来越普遍”．由此可推知，2013年所做的调查之后，人们发现更多的学生作弊．故作弊现象可能会越来越普遍，故正确答案为A。
第5题：
请阅读Passage2，完成第小题。
Passage 2
Results showed that at least a tenth of the Harvard first-year undergraduates polled admitted to having cheated on an exam prior to starting at the university, while almost half admitted to cheating on their homework. An anonymous survey by Harvard's newspaper has revealed a surprising pattern of academic dishonesty among students entering the US universities.
The survey by The Harvard Crimson was emailed to the incoming first year undergraduates;1,600 students responded. Results showed that at least a tenth of the students polled admitted to having cheated on an exam prior to starting at the university, while almost half admitted to cheating on their homework.
Athletes were apparently the most prone to cheating. 20 percent of students who played a university sport admitted to cheating on an exam compared to 9 percent of students who did not.
The survey also revealed that men were not only more likely to cheat but were also more likely to admit to it.
The results, compared to a previous survey done on the class of 2013, suggested that cheating may be becoming more commonplace. Of the outgoing seniors only 7 percent admitted to cheating in an exam and another 7 percent said they had been dishonest on a take-home test. 32 percent of the seniors said they had cheated on homework during their undergraduate years..
The surveys come in the wake of a cheating scandal at the university which saw 120 students investigated for sharing answers on an exam in 2012. One recent graduate stated: "Cheating was commonplace when I was at Harvard, especially with students in their first year or two. I would say as many as 60 per cent of students took notes into some exams. No one really cared the faculty,well some of them at least, seemed to recognize and yet ignore the problem."
In an email to NBC News, Jeff Neal, a Harvard representative, explained that a committee,made up of faculty, staff and students had been established to tackle cheating, which "is a national problem in American education".
He added: "While the vast majority of Harvard and other students do their work honestly,beginning this year Harvard College has implemented a new, more robust strategy of communicating with all students, particularly first-year students, about the importance--and the ways to achieve--academic integrity."
In a rebuff to critics who say university has become little more than an expensive party, 84 per cent of the responding undergraduates fully expected to prioritize their academics over extracurricular activities, sport, employment and their social lives. Not a single student put academics at the bottom of their list. Not content with confining themselves to their degree subject,59 percent of incoming students expressed a desire to pursue a secondary field of study, and 36
percent hoped to learn a language.
What is the tone of the author according to the passage?
查看材料
Passage 2
Results showed that at least a tenth of the Harvard first-year undergraduates polled admitted to having cheated on an exam prior to starting at the university, while almost half admitted to cheating on their homework. An anonymous survey by Harvard's newspaper has revealed a surprising pattern of academic dishonesty among students entering the US universities.
The survey by The Harvard Crimson was emailed to the incoming first year undergraduates;1,600 students responded. Results showed that at least a tenth of the students polled admitted to having cheated on an exam prior to starting at the university, while almost half admitted to cheating on their homework.
Athletes were apparently the most prone to cheating. 20 percent of students who played a university sport admitted to cheating on an exam compared to 9 percent of students who did not.
The survey also revealed that men were not only more likely to cheat but were also more likely to admit to it.
The results, compared to a previous survey done on the class of 2013, suggested that cheating may be becoming more commonplace. Of the outgoing seniors only 7 percent admitted to cheating in an exam and another 7 percent said they had been dishonest on a take-home test. 32 percent of the seniors said they had cheated on homework during their undergraduate years..
The surveys come in the wake of a cheating scandal at the university which saw 120 students investigated for sharing answers on an exam in 2012. One recent graduate stated: "Cheating was commonplace when I was at Harvard, especially with students in their first year or two. I would say as many as 60 per cent of students took notes into some exams. No one really cared the faculty,well some of them at least, seemed to recognize and yet ignore the problem."
In an email to NBC News, Jeff Neal, a Harvard representative, explained that a committee,made up of faculty, staff and students had been established to tackle cheating, which "is a national problem in American education".
He added: "While the vast majority of Harvard and other students do their work honestly,beginning this year Harvard College has implemented a new, more robust strategy of communicating with all students, particularly first-year students, about the importance--and the ways to achieve--academic integrity."
In a rebuff to critics who say university has become little more than an expensive party, 84 per cent of the responding undergraduates fully expected to prioritize their academics over extracurricular activities, sport, employment and their social lives. Not a single student put academics at the bottom of their list. Not content with confining themselves to their degree subject,59 percent of incoming students expressed a desire to pursue a secondary field of study, and 36
percent hoped to learn a language.
What is the tone of the author according to the passage?
查看材料
A．Subjective.
B．Exaggerated.
C．Sarcastic.
D．Objective.
B．Exaggerated.
C．Sarcastic.
D．Objective.
答案：D
解析：
本文主要讲述了进入美国大学的学生中存在的学术上的不诚实行为。作者严格依照调查结果，引用调查数据以及相关权威人士的观点，客观地陈述了这一现象。因而．作者采用了客观陈述的语气。正确答案为D。
第6题：
According to the third paragraph ,which of the following is true?
[ A] Five percent of American college students learnt Latin texts.
[ B] Students in New England learnt Latin texts in official organizations.
[ C] Students were compelled to learn modern European languages.
[ D] American college students had to learn Latin grammar by heart.
正确答案：B
60.B【精析】该题为细节题。根据第三段第三句“As recently as the last century, when less than 5% of Americans went to college at all, students in New England establishments were compelled mainly to memorize and recite various Latin texts...”我们知道，上世纪美国只有不到5%的人接受大学教育，而只有新英格兰教育机构的学生们被强迫记忆及背诵各类拉丁文课文，故A、D项错误；根据A 项的分析我们知道，新英格兰的学生在教育机构学习拉丁文课文，教育机构属于官方组织，故B项正确；根据第三段第三句“… crusty professors angrily opposed the introduction of any new scien- tific discoveries or modern European languages。”我们知道，脾气暴躁的大学教授愤怒的反对引进任何新科学发现或者现代欧洲语言，故C项错误。
60.B【精析】该题为细节题。根据第三段第三句“As recently as the last century, when less than 5% of Americans went to college at all, students in New England establishments were compelled mainly to memorize and recite various Latin texts...”我们知道，上世纪美国只有不到5%的人接受大学教育，而只有新英格兰教育机构的学生们被强迫记忆及背诵各类拉丁文课文，故A、D项错误；根据A 项的分析我们知道，新英格兰的学生在教育机构学习拉丁文课文，教育机构属于官方组织，故B项正确；根据第三段第三句“… crusty professors angrily opposed the introduction of any new scien- tific discoveries or modern European languages。”我们知道，脾气暴躁的大学教授愤怒的反对引进任何新科学发现或者现代欧洲语言，故C项错误。
第7题：
Passage Four
More than 6,000 children were expelled (开除) from US school last year for bringing guns and bombs to school, the US Department of Education said on May 8.
The department gave a report to the expulsions (开除) as saying handguns accounted for 58 percent of the 6,093 expulsions in 1996 and 1997, against 7 percent for rifles (步枪) or shotguns and 35 percent for other types of firearms.
"The report is a clear sign that out nation's public schools are cracking down (严惩) on students who bring guns to school," Education Secretary Richard Riley said in a statement. "We need to be tough-minded about keeping guns out of our schools and do everything to keep our children safe."
In March 1997, an 11 years old boy and 13 years old boy using handguns and rifles shot dead four children and a teacher at a school in Jonesboro, Arkansas. In October, two were killed and seven wounded in a shooting at a Mississippi school. Two months later, a 14 years old boy killed three high school students and wounded five in Dasucah, Kentucky.
Most of the expulsions, 56 percent, were from high school, which have students from about age 13.34 percent were from junior high schools and 9 percent were from elementary schools, the report said.
46. From the first paragraph we can infer that in the US schools ______.
A. students enjoy shooting
B. students are eager to be solider
C. safety is a problem
D. students can make guns
正确答案：C
46．答案为C。根据第一段，for bringing guns and bombs to school作出该项选择。
第8题：
The audience, ______, enjoyed the performance.
A. most of them were students
B. most of whom were students
C. whom they were students
D. they were mostly students
正确答案：B
第9题：
请阅读短文，完成此题。
Results showed that at least a tenth of the Harvard first-year undergraduates polled admitted tohaving cheated on an exam prior to starting at the university, while almost half admitted to cheatingon their homework. An anonymous survey by Harvard's newspaper has revealed a surprisingpattern of academic dishonesty among students entering the US universities.
The survey by The Harvard Crimson was emailed to the incoming first year undergraduates;1,600 students responded. Results showed that at least a tenth of the students polled admitted tohaving cheated on an exam prior to starting at the university, while almost half admitted to cheatingon their homework.
Athletes were apparently the most prone to cheating.20 percent of students who played auniversity sport admitted to cheating on an exam compared to 9 percent of students who did not.The survey also revealed that men were not only more likely to cheat but were also more likely toadmit to it.
The results, compared to a previous survey done on the class of 2013, suggested that cheatingmay be becoming more commonplace. Of the outgoing seniors only 7 percent admitted to cheatingin an exam and another 7 percent said they had been dishonest on a take-home test.32 percent ofthe seniors said they had cheated on homework during their undergraduate years.
The surveys come in the wake of a cheating scandal at the university which saw 120 studentsinvestigated for sharing answers on an exam in 2012. One recent graduate stated: "Cheating wascommonplace when I was at Harvard, especially with students in their first year or two. I would sayas many as 60 percent of students took notes into some exams. No one really cared the faculty, wellsome of them at least, seemed to recognize and yet ignore the problem."
In an email to NBC News, Jeff Neal, a Harvard representative, explained that a committee,made up of faculty, staff and students had been established to tackle cheating, which "is a nationalproblem in American education".
He added: "While the vast majority of Harvard and other students do their work honestly,beginning this year Harvard College has implemented a new, more robust strategy of communicatingwith all students, particularly first-year students, about the importance--and the ways to achieve--academic integrity."
In a rebuff to critics who say university has become little more than an expensive party,84 percentof therespondingundergraduatesfullyexpectedtoprioritizetheiracademicsoverextracurricular activities, sport, employment and their social lives. Not a single student putacademics at the bottom of their list. Not content with confining themselves to their degree subject, 59 percent of incoming students expressed a desire to pursue a secondary field of study, and 36 percent hoped to learn a language.
What did the results show according to the first two paragraphs?
查看材料
Results showed that at least a tenth of the Harvard first-year undergraduates polled admitted tohaving cheated on an exam prior to starting at the university, while almost half admitted to cheatingon their homework. An anonymous survey by Harvard's newspaper has revealed a surprisingpattern of academic dishonesty among students entering the US universities.
The survey by The Harvard Crimson was emailed to the incoming first year undergraduates;1,600 students responded. Results showed that at least a tenth of the students polled admitted tohaving cheated on an exam prior to starting at the university, while almost half admitted to cheatingon their homework.
Athletes were apparently the most prone to cheating.20 percent of students who played auniversity sport admitted to cheating on an exam compared to 9 percent of students who did not.The survey also revealed that men were not only more likely to cheat but were also more likely toadmit to it.
The results, compared to a previous survey done on the class of 2013, suggested that cheatingmay be becoming more commonplace. Of the outgoing seniors only 7 percent admitted to cheatingin an exam and another 7 percent said they had been dishonest on a take-home test.32 percent ofthe seniors said they had cheated on homework during their undergraduate years.
The surveys come in the wake of a cheating scandal at the university which saw 120 studentsinvestigated for sharing answers on an exam in 2012. One recent graduate stated: "Cheating wascommonplace when I was at Harvard, especially with students in their first year or two. I would sayas many as 60 percent of students took notes into some exams. No one really cared the faculty, wellsome of them at least, seemed to recognize and yet ignore the problem."
In an email to NBC News, Jeff Neal, a Harvard representative, explained that a committee,made up of faculty, staff and students had been established to tackle cheating, which "is a nationalproblem in American education".
He added: "While the vast majority of Harvard and other students do their work honestly,beginning this year Harvard College has implemented a new, more robust strategy of communicatingwith all students, particularly first-year students, about the importance--and the ways to achieve--academic integrity."
In a rebuff to critics who say university has become little more than an expensive party,84 percentof therespondingundergraduatesfullyexpectedtoprioritizetheiracademicsoverextracurricular activities, sport, employment and their social lives. Not a single student putacademics at the bottom of their list. Not content with confining themselves to their degree subject, 59 percent of incoming students expressed a desire to pursue a secondary field of study, and 36 percent hoped to learn a language.
What did the results show according to the first two paragraphs?
查看材料
A．Most American students cheat in exams before they enter universities.
B．Most American students entering the universities admit they have cheated.
C．Half of students entering the universities admit to cheating on their homework.
D．There is academic dishonesty among students entering the US University.
B．Most American students entering the universities admit they have cheated.
C．Half of students entering the universities admit to cheating on their homework.
D．There is academic dishonesty among students entering the US University.
答案：D
解析：
文章开头提到，据哈佛大学的报纸进行的一项匿名调查揭示了一个出人意料的事实，那就是进入美国大学的学生中存在学术上不诚实的行为。接着，作者在文章第二段引用具体数据来说明这一主题。选项中，D项意为“进入美国大学的学生中存在学术上不诚实的行为”，这与前两段的中心句意思一致，因此，正确答案是D。
第10题：
请阅读Passage2，完成第小题。
Passage 2
Results showed that at least a tenth of the Harvard first-year undergraduates polled admitted to having cheated on an exam prior to starting at the university, while almost half admitted to cheating on their homework. An anonymous survey by Harvard's newspaper has revealed a surprising pattern of academic dishonesty among students entering the US universities.
The survey by The Harvard Crimson was emailed to the incoming first year undergraduates;1,600 students responded. Results showed that at least a tenth of the students polled admitted to having cheated on an exam prior to starting at the university, while almost half admitted to cheating on their homework.
Athletes were apparently the most prone to cheating. 20 percent of students who played a university sport admitted to cheating on an exam compared to 9 percent of students who did not.
The survey also revealed that men were not only more likely to cheat but were also more likely to admit to it.
The results, compared to a previous survey done on the class of 2013, suggested that cheating may be becoming more commonplace. Of the outgoing seniors only 7 percent admitted to cheating in an exam and another 7 percent said they had been dishonest on a take-home test. 32 percent of the seniors said they had cheated on homework during their undergraduate years..
The surveys come in the wake of a cheating scandal at the university which saw 120 students investigated for sharing answers on an exam in 2012. One recent graduate stated: "Cheating was commonplace when I was at Harvard, especially with students in their first year or two. I would say as many as 60 per cent of students took notes into some exams. No one really cared the faculty,well some of them at least, seemed to recognize and yet ignore the problem."
In an email to NBC News, Jeff Neal, a Harvard representative, explained that a committee,made up of faculty, staff and students had been established to tackle cheating, which "is a national problem in American education".
He added: "While the vast majority of Harvard and other students do their work honestly,beginning this year Harvard College has implemented a new, more robust strategy of communicating with all students, particularly first-year students, about the importance--and the ways to achieve--academic integrity."
In a rebuff to critics who say university has become little more than an expensive party, 84 per cent of the responding undergraduates fully expected to prioritize their academics over extracurricular activities, sport, employment and their social lives. Not a single student put academics at the bottom of their list. Not content with confining themselves to their degree subject,59 percent of incoming students expressed a desire to pursue a secondary field of study, and 36
percent hoped to learn a language.
What did the results show according to the first two paragraphs?
查看材料
Passage 2
Results showed that at least a tenth of the Harvard first-year undergraduates polled admitted to having cheated on an exam prior to starting at the university, while almost half admitted to cheating on their homework. An anonymous survey by Harvard's newspaper has revealed a surprising pattern of academic dishonesty among students entering the US universities.
The survey by The Harvard Crimson was emailed to the incoming first year undergraduates;1,600 students responded. Results showed that at least a tenth of the students polled admitted to having cheated on an exam prior to starting at the university, while almost half admitted to cheating on their homework.
Athletes were apparently the most prone to cheating. 20 percent of students who played a university sport admitted to cheating on an exam compared to 9 percent of students who did not.
The survey also revealed that men were not only more likely to cheat but were also more likely to admit to it.
The results, compared to a previous survey done on the class of 2013, suggested that cheating may be becoming more commonplace. Of the outgoing seniors only 7 percent admitted to cheating in an exam and another 7 percent said they had been dishonest on a take-home test. 32 percent of the seniors said they had cheated on homework during their undergraduate years..
The surveys come in the wake of a cheating scandal at the university which saw 120 students investigated for sharing answers on an exam in 2012. One recent graduate stated: "Cheating was commonplace when I was at Harvard, especially with students in their first year or two. I would say as many as 60 per cent of students took notes into some exams. No one really cared the faculty,well some of them at least, seemed to recognize and yet ignore the problem."
In an email to NBC News, Jeff Neal, a Harvard representative, explained that a committee,made up of faculty, staff and students had been established to tackle cheating, which "is a national problem in American education".
He added: "While the vast majority of Harvard and other students do their work honestly,beginning this year Harvard College has implemented a new, more robust strategy of communicating with all students, particularly first-year students, about the importance--and the ways to achieve--academic integrity."
In a rebuff to critics who say university has become little more than an expensive party, 84 per cent of the responding undergraduates fully expected to prioritize their academics over extracurricular activities, sport, employment and their social lives. Not a single student put academics at the bottom of their list. Not content with confining themselves to their degree subject,59 percent of incoming students expressed a desire to pursue a secondary field of study, and 36
percent hoped to learn a language.
What did the results show according to the first two paragraphs?
查看材料
A．Most American students cheat in exams before they enter universities.
B．Most American students entering the universities admit they have cheated.
C．Half of students entering the universities admit to cheating on their homework.
D．There is academic dishonesty among students entering the US University.
B．Most American students entering the universities admit they have cheated.
C．Half of students entering the universities admit to cheating on their homework.
D．There is academic dishonesty among students entering the US University.
答案：D
解析：
文章开头提到，据哈佛大学的报纸进行的一项匿名调查揭示了一个出人意料的事实，那就是进人美国大学的学生中存在学术上不诚实的行为。接着．作者在文章第二段引用具体数据来说明这一主题。选项中，D项意为“进入美国大学的学生中存在学术上不诚实的行为”．这与前两段的中心旬意思一致，因此．正确答案是D。