搜题
问题详情
共用题干
第一篇
DNA Testing
DNA testing reveals the genes of each individual person.Since the early twentieth century scientists
have known that all human characteristics are contained in a person's genes and are passed from parents to
children.Genes work as a chemical instruction manual for each part and each function of the body.Their
basic chemical element is called DNA,a copy of which can be found in every cell. The existence of genes
and the chemical structure of DNA were understood by the mid-1900s,but scientists have only recently been
able to identify a person from just a drop of blood or a single hair.
One of the most important uses of DNA testing is in criminal investigation.The very first use of DNA
testing in a criminal case was in 1985 in Great Britain,when a man confessed to killing a young woman in
the English countryside.Because police had found samples of the killer's DNA at the scene of the crime,a
biologist suggested that it might be possible to compare that DNA to some from the confessor's blood.To
everyone's surprise,the tests showed that he was not the killer. Nor was he guilty of a similar murder that
had happened some time earlier. At that point he admitted that he had confessed to the crimes out of fear
and police pressure.The police then asked 5,000 local men for samples of their blood,and DNA testing
revealed that one of them was the real murderer,so the first man was set free.
In 1992,two law professors,Peter Neufeld and Bany Scheck,decided to use DNA evidence to help set free
such mistakenly convicted prisoners.With the help of their students.they created a not-for-profit organization
called the Innocence Project. Most of their clients are poor men,many from racial and ethnic minorities.In
fact,studies have shown that U. S. judges and juries are often influenced by racial and ethnic background,and
that people from minority groups are more likely to be convicted. Some of these men had been sentenced to
death,a form of punishment used in thirty eight states out of fifty(as of 2006).For most of these prisoners,their
only hope was another trial in which DNA testing could be used to prove their innocence.
Between 1992 and 2006,the Innocence Project helped free 100 men.Some of these prisoners had been
in jail for ten,twenty years or more for crimes they did not commit.However,the goal of the Innocence
Project is not simply to set free those who are wrongfully in jail.They also hope to bring about real changes
in the criminal justice system.
Illinois in the late 1990s,a group of journalism students at Northwestern University were able to bring
about such a change in that state.They began investigating some Illinois prisoners who claimed to be inno-
cent. Through DNA testing,the students were able to prove that in fact the prisoners were not guilty of the
crimes they had been accused of. Thirteen of these men were set free,and in 2000,Governor Ryan of
Illinois decided to stop carrying out death sentences until further study could be made of the prisoners'
cases。
The use of DNA in criminal cases is still being debated around the world.Some fear that governments
will one day keep records of everyone'sDNA,which could put limits on the privacy and freedom of citizens.
Other people mistrust the science of DNA testing and think that lawyers use it to get their clients free whether
or not they are guilty.But for those whose innocence has been proven and who are now free men,DNA
testing has meant nothing less than a return to life.And with the careful use of DNA testing,no innocent
person should ever be convicted again.
What is the author's attitude toward DNA testing?
A:Negative.
B:Positive.
C:Suspicious.
D:Indifferent.
未搜索到的试题可在搜索页快速提交，您可在会员中心"提交的题"快速查看答案。
收藏该题
查看答案
搜题
相关问题推荐
共用题干
Teaching and Learning
Many teachers believe that the responsibilities for learning lie with the student.If a long reading assignment is given,instructors expect students to be familiar with the ______(1)in the reading even if they do not discuss it in class or take an examination.The ______(2) student is considered to be one who is motivated to learn for the sake of______(3) ,not the one interested only in getting high grades.Sometimes homework is returned ______(4) brief written comments but without a grade.
Even if a grade is not given,the student is ______(5) for learning the materi al assigned.When research is______(6), the professor expects the student to take it actively and to complete it with______(7) guidance.
It is the student's responsibility to find books,maga-zines,and articles in the library.Professors do not have the time to explain______(8) a university library works；they expect students______(9) graduate students to exhaust the reference______(10) in the library.Professors will help students who need it,but______(11) that their students should not be______(12)dependent on them.In the United States professors have many other duties______(13)teaching,such as administrative or research work.Therefore, the time that a professor can spend with a student outside of class is______(14).
If a student has problems with classroom work,the student should either______(15)a professor during office hours or make an appointment.
7._________
A:maximum
B:minimum
C:possible
D:practical
Teaching and Learning
Many teachers believe that the responsibilities for learning lie with the student.If a long reading assignment is given,instructors expect students to be familiar with the ______(1)in the reading even if they do not discuss it in class or take an examination.The ______(2) student is considered to be one who is motivated to learn for the sake of______(3) ,not the one interested only in getting high grades.Sometimes homework is returned ______(4) brief written comments but without a grade.
Even if a grade is not given,the student is ______(5) for learning the materi al assigned.When research is______(6), the professor expects the student to take it actively and to complete it with______(7) guidance.
It is the student's responsibility to find books,maga-zines,and articles in the library.Professors do not have the time to explain______(8) a university library works；they expect students______(9) graduate students to exhaust the reference______(10) in the library.Professors will help students who need it,but______(11) that their students should not be______(12)dependent on them.In the United States professors have many other duties______(13)teaching,such as administrative or research work.Therefore, the time that a professor can spend with a student outside of class is______(14).
If a student has problems with classroom work,the student should either______(15)a professor during office hours or make an appointment.
7._________
A:maximum
B:minimum
C:possible
D:practical
共用题干
Verne's Accurate Previw of the Future
Since the beginning of time,man has been interested in the moon.The Romans designed a special day to show admiration and respect to the moon.They called it“Moonday”,or “Monday”,as we know it today.Later,the great mind of Leonardo da Vinci studied the moon and designed a machine to carry a human to the moon.Leonardo said that one day a great machine bird would take a person to the moon and bring great honor to the home where it was born.
Four and a half centuries later,Leonardo's idea was realized.Apollo Ⅱ took three
Americans一Collins,Aldrin,and Armstrong一to the moon.The mission did fill the whole world with great surprise,as Leonardo had said it would.Numerous essays,articles,and books were written about man's first moon mission.But perhaps the most interesting story was one written before the event一over 100 years ago.
In 1865,French author Jules Verne wrote a story about the first journey to the moon.His story was very similar to the 1969 Apollo Ⅱ mission.
Verne's spacecraft also contained three men一two Americans and a Frenchman.The spacecraft was described as being almost the same size as Apollo Ⅱ .The launch site in Verne's story was also in Florida.The spacecraft in Verne's story was named the“Columbiad”aa.The Apollo Ⅱ command ship was called“Columbia”.His account of sending the space-craft into the space could easily have been written about how Apollo Ⅱ was sent into the space.
Verne's story was the same as the actual event in several other respects.The speed of Verne's spacecraft was 36,000 feet per second；Apollo's was 35,533 feet per second.Verne's spacecraft took 97 hours to reach the moon；Apollo's time was 103 hours.Like Apollo's spacemen,Verne's spacemen took pictures of the moon's surface,relaxed on their seats, cooked with gas,and experienced weightlessness.They also came down in the Pacific and were picked up by an American warship.
What were the reasons for Jules Verne's extreme accuracy in describing an event 100 years or more before it actually occurred?He based his writings on the laws of physics and astronomy（天文学）.Nineteenth-century science and the vivid Verne's imagination gave people an unbelievable accurate preview of the greatest events of the 20th century.
According to the passage,which of the following statements is true?
A:Monday is named by the Greek to show their respect to the sun.
B:Unfortunately,Leonardo's idea wasn't realized before he died.
C:Apollo II was launched from California in 1969.
D:Amazingly,Verne's story was exactly the same as the actual event.
Verne's Accurate Previw of the Future
Since the beginning of time,man has been interested in the moon.The Romans designed a special day to show admiration and respect to the moon.They called it“Moonday”,or “Monday”,as we know it today.Later,the great mind of Leonardo da Vinci studied the moon and designed a machine to carry a human to the moon.Leonardo said that one day a great machine bird would take a person to the moon and bring great honor to the home where it was born.
Four and a half centuries later,Leonardo's idea was realized.Apollo Ⅱ took three
Americans一Collins,Aldrin,and Armstrong一to the moon.The mission did fill the whole world with great surprise,as Leonardo had said it would.Numerous essays,articles,and books were written about man's first moon mission.But perhaps the most interesting story was one written before the event一over 100 years ago.
In 1865,French author Jules Verne wrote a story about the first journey to the moon.His story was very similar to the 1969 Apollo Ⅱ mission.
Verne's spacecraft also contained three men一two Americans and a Frenchman.The spacecraft was described as being almost the same size as Apollo Ⅱ .The launch site in Verne's story was also in Florida.The spacecraft in Verne's story was named the“Columbiad”aa.The Apollo Ⅱ command ship was called“Columbia”.His account of sending the space-craft into the space could easily have been written about how Apollo Ⅱ was sent into the space.
Verne's story was the same as the actual event in several other respects.The speed of Verne's spacecraft was 36,000 feet per second；Apollo's was 35,533 feet per second.Verne's spacecraft took 97 hours to reach the moon；Apollo's time was 103 hours.Like Apollo's spacemen,Verne's spacemen took pictures of the moon's surface,relaxed on their seats, cooked with gas,and experienced weightlessness.They also came down in the Pacific and were picked up by an American warship.
What were the reasons for Jules Verne's extreme accuracy in describing an event 100 years or more before it actually occurred?He based his writings on the laws of physics and astronomy（天文学）.Nineteenth-century science and the vivid Verne's imagination gave people an unbelievable accurate preview of the greatest events of the 20th century.
According to the passage,which of the following statements is true?
A:Monday is named by the Greek to show their respect to the sun.
B:Unfortunately,Leonardo's idea wasn't realized before he died.
C:Apollo II was launched from California in 1969.
D:Amazingly,Verne's story was exactly the same as the actual event.
共用题干
The Forbidden Apple
New York used to be the city that never sleeps.These days it's the city that never smokes,drinks or does anything naughty(at least,not in public).The Big Apple is quickly turning into the Forbidden Apple.
If you wanted a glass of wine with your picnic in Central Park,could you have one?No chance.Drinking alcohol in public isn't allowed.If you decided to feed the birds with the last crumbs（碎屑）of your sandwich, you could be arrested.It's illegal.If you went to a par for a drink and a cigarette,that would be OK.wouldn't it?Er…no.You can't smoke in public in New York City.
What's going on?Why is the city that used to be so open-minded becoming like this?
The mayor of New York is behind it all.He has brought in a whole lot of new laws to stop citizens from doing what they want,when they want.
The press are shocked.Even the New York police have joined the argument.They recently spent$100,000 ona“Don't blame the cop”campaign.One New York police officer said,“We raise money for the city by giving people fines for breaking some very stupid laws.
It's all about money.”
The result is a lot of fines for minor offences.Yoav Kashida,an Israel tourist,fell asleep on the subway.When he woke up,two police officers fined him because he had fallen asleep on two seats(you mustn't use two seats in the subway).Elle and Serge Schroitman were fined for blocking a driveway with their car.It was their own driveway.
The angry editor of Vanity Fair magazine,Graydon Carter,“says.Under New York City law it is acceptable to keep a gun in your place of work,but not an empty ashtray.”He should know.The police came to his office and took away his ashtray（烟灰缸）.
But not all of New York's inhabitants are complaining.Marcia Dugarry,72,said,“The city has changed for the better.If more cities had these laws.America would be a better place to live.”Nixon Patrick.38,a barman,said,“I like the new laws.If people smoked in here. we'd go home smelling of cigarettes.”
Recent figures show that New York now has fewer crimes per 100,000 people than 193 other US cities.And it's true一It's safer,cleaner and more healthy than before.But let'sbe honest一who goes to New York for its clean streets?
Elle and Serge Schroitman parked their car on the public driveway.
A:Right
B:Wrong
C:Not mentioned
The Forbidden Apple
New York used to be the city that never sleeps.These days it's the city that never smokes,drinks or does anything naughty(at least,not in public).The Big Apple is quickly turning into the Forbidden Apple.
If you wanted a glass of wine with your picnic in Central Park,could you have one?No chance.Drinking alcohol in public isn't allowed.If you decided to feed the birds with the last crumbs（碎屑）of your sandwich, you could be arrested.It's illegal.If you went to a par for a drink and a cigarette,that would be OK.wouldn't it?Er…no.You can't smoke in public in New York City.
What's going on?Why is the city that used to be so open-minded becoming like this?
The mayor of New York is behind it all.He has brought in a whole lot of new laws to stop citizens from doing what they want,when they want.
The press are shocked.Even the New York police have joined the argument.They recently spent$100,000 ona“Don't blame the cop”campaign.One New York police officer said,“We raise money for the city by giving people fines for breaking some very stupid laws.
It's all about money.”
The result is a lot of fines for minor offences.Yoav Kashida,an Israel tourist,fell asleep on the subway.When he woke up,two police officers fined him because he had fallen asleep on two seats(you mustn't use two seats in the subway).Elle and Serge Schroitman were fined for blocking a driveway with their car.It was their own driveway.
The angry editor of Vanity Fair magazine,Graydon Carter,“says.Under New York City law it is acceptable to keep a gun in your place of work,but not an empty ashtray.”He should know.The police came to his office and took away his ashtray（烟灰缸）.
But not all of New York's inhabitants are complaining.Marcia Dugarry,72,said,“The city has changed for the better.If more cities had these laws.America would be a better place to live.”Nixon Patrick.38,a barman,said,“I like the new laws.If people smoked in here. we'd go home smelling of cigarettes.”
Recent figures show that New York now has fewer crimes per 100,000 people than 193 other US cities.And it's true一It's safer,cleaner and more healthy than before.But let'sbe honest一who goes to New York for its clean streets?
Elle and Serge Schroitman parked their car on the public driveway.
A:Right
B:Wrong
C:Not mentioned
His answers were 【obscure】 and confusing.
A.unclear
B.obvious
C.clear
D.direct
A.unclear
B.obvious
C.clear
D.direct
The company takes environmental issues into account wherever possible.
A:computation
B:consideration
C:calculation
D:assessment
A:computation
B:consideration
C:calculation
D:assessment
