Jeffery said he          to the get—together the next day, but he didn’t.

A.had come    B.would come    C.came     D.can come

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科目：高中英語 來源： 題型：閱讀理解

Two scientists in California now think they can find out a person’s real age.Jeffery Bada and Patricia Masters do chemical tests on teeth.When we are born the amino acids（氨基酸）in our teeth are in one form.Then，as we grow older these amino acids change into a second form.Every year，one thousandth of the amino acids changed.So，by testing just one tooth and counting the number of amino acids in each form，Bada and Masters can work out a person’s age.They tested a tooth from the body of an Eskimo（愛斯基摩人）woman who died 1 600 years ago.From the appearance of her body，she was between 50 and 60 years old when she died.The tooth test put her age at 53.Then the Russian Government sent them a tooth from an old man in Georgia.The tooth said she was 99.Her real age was 96.The Russians are now hoping to send more teeth，from the very old people without birth certificates（出生證明書）.But there are problems.Some of the centenarians（百歲老人）have lost all their teeth.The others want to keep their teeth until they drop out naturally.So the Russian Government and the American scientists have to wait and hope.

61.Jeffery Bada and Patricia Masters believe that they can tell a person’s age according to_______.

A.an experiment on his bone

B.the shape and condition of his teeth

C.a test on the amino acids within his body

D.the changing form of amino acids in his teeth

62.According to the passage，which of the following statements is true?

A.The amino acids in an adult’s teeth may differ from those in a baby’s.

B.The number of amino acids in a 20-year-old man is different from that when he was seven.

C.Amino acids in one teeth changes without affecting their forms.

D.Scientists now can tell how long a person will live by testing his teeth.

63.Why are the two scientists asked to find out some very old Russians’ age?

A.Because the Government wants to know how long these old people can live.

B.Because they have no birth certificates.

C.Because people who have tooth problems tend to live longer.

D.Because the Government wants to know their dates of birth and death.

64.In order to find out the exact age of some people over 100，both the Russian Government and American scientists_______.

A.should wait until all of them die

B.should pull out one of their teeth

C.have to wait for their teeth to drop out naturally

D.want to have their teeth pulled out

65.The central idea of the passage is_______.

A.the relationship between people’s teeth and ages

B.the relationship between amino acids and teeth

C.the contradiction（矛盾）between scientists and patients

D.the contradiction between the Government and the scientists

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科目：高中英語 來源：安徽省懷寧中學(xué)2010屆高三下學(xué)期3月月考 題型：閱讀理解


C
It happened one morning 20 years ago. A British scientist Alec Jeffrey came across DNA fingerprinting: He identified the patterns of genetic material that are unique to almost every individual. His discovery changed everything from the way we do criminal investigations to the way we decide family law. But the professor of genetics at the University of Leicester, UK, is still surprised, and a bit worried, by the power of the technology he released upon the world.
The patterns within DNA are unique to each individual, except identical twins, who share the same pattern. The ability to identify these patterns has been used to convict(證明…有罪) murderers and to clear people who are wrongly accused. It is also used to identify the victims of war and settle disputes over who is the father of a child.
Jeffrey said he and his colleagues made the discovery by accident while tracking genetic
variations(變異). But, within six months of the discovery, genetic fingerprinting had been used in an immigration case, to prove that an African boy really was his parents’ son.·In 1986, it was used for the first time in a British criminal case: It cleared one suspect after being accused of two murders and helped convict another man.
DNA testing is now very common. In Britain, a national criminal database established in 1995 now contains 2.5 million DNA samples. The U.S. and Canada are developing similar systems. But there are fears about the stored DNA samples and how they could be used to harm a person’s privacy. That includes a person’s medical history, racial origin or psychological profile. “There is the long-term risk that people can get into these samples and start getting additional information about a person’s paternity(父子關(guān)系) or risk of disease,” Jeffrey said.
DNA testing is not an unfailing proof of identity. Still, it is considered a reasonably reliable system for determining the things it is used for. Jeffrey estimates the probability of two individuals’ DNA profiles matching in the most commonly used tests at one in a billion.
62. According to the text, DNA testing can NOT be used in _______ .
A. doing criminal investigations        B. deciding faraily law
C. clearmg wrongly accused people     D. telling twins apart
63. DNA samples are not popular with all the people because _______ .
A. the government in Britain establishes a criminal database
B. the US and Canada develop similar systems
C. DNA samples can be used to harm a person’s privacy
D. DNA testing is too expensive and dangerous now
64. Where will you most probably find this article?
A. In a guidebook.                   B. In a storybook.
C. In a science fiction.               D. In a scientific magazine.
65. Which is the best title for the passage?
A. Discovery of DNA testing by Jeffery  B. Practice of DNA testing in court
C. DNA testing in the present situation   D.Benefits and side effects of DNA testing

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科目：高中英語 來源：2012屆江蘇省高二下學(xué)期期末考試（英語） 題型：閱讀理解

It happened one morning 20 years ago. A British scientist Alec Jeffrey came across DNA fingerprinting: He identified the patterns of genetic material that are unique to almost every individual. His discovery changed everything from the way we do criminal investigations to the way we decide family law. But the professor of genetics at the University of Leicester, UK, is still surprised, and a bit worried, by the power of the technology he released upon the world.

The patterns within DNA are unique to each individual, except identical twins, who share the same pattern. The ability to identify these patterns has been used to convict(證明…有罪) murderers and to clear people who are wrongly accused. It is also used to identify the victims of war and settle disputes over who is the father of a child.

Jeffrey said he and his colleagues made the discovery by accident while tracking genetic variations(變異). But, within six months of the discovery, genetic fingerprinting had been used in an immigration case, to prove that an African boy really was his parents’ son.·In 1986, it was used for the first time in a British criminal case: It cleared one suspect after being accused of two murders and helped convict another man.

DNA testing is now very common. In Britain, a national criminal database established in 1995 now contains 2.5 million DNA samples. The U.S. and Canada are developing similar systems. But there are fears about the stored DNA samples and how they could be used to harm a person’s privacy. That includes a person’s medical history, racial origin or psychological profile. “There is the long-term risk that people can get into these samples and start getting additional information about a person’s paternity(父子關(guān)系) or risk of disease,” Jeffrey said.

DNA testing is not an unfailing proof of identity. Still, it is considered a reasonably reliable system for determining the things it is used for. Jeffrey estimates the probability of two individuals’ DNA profiles matching in the most commonly used tests at one in a billion.

 

1.According to the text, DNA testing can NOT be used in _______ .

A. doing criminal investigations        B. deciding faraily law

C. clearmg wrongly accused people       D. telling twins apart

2.DNA samples are not popular with all the people because _______ .

A. the government in Britain establishes a criminal database

B. the US and Canada develop similar systems

C. DNA samples can be used to harm a person’s privacy

D. DNA testing is too expensive and dangerous now

3.Where will you most probably find this article?

A. In a guidebook.                      B. In a storybook.

C. In a science fiction.                D. In a scientific magazine.

4.Which is the best title for the passage?

A. Discovery of DNA testing by Jeffery    B. Practice of DNA testing in court

C. DNA testing in the present situation   D.Benefits and side effects of DNA testing

 

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科目：高中英語 來源： 題型：閱讀理解

It happened one morning 20 years ago．A British scientist Alec Jeffrey came across DNA fingerprinting: He identified the patterns of genetic material that are unique to almost every individual．His discovery changed everything from the way we do criminal investigations to the way we decide family law．But the professor of genetics at the University of Leicester, UK, is still surprised, and a bit worried, by the power of the technology he released upon the world．

The patterns within DNA are unique to each individual, except identical twins, who share the same pattern．The ability to identify these patterns has been used to convict（證明…有罪） murderers and to clear people who are wrongly accused．It is also used to identify the victims of war and settle disputes over who is the father of a child．

Jeffrey said he and his colleagues made the discovery by accident while tracking genetic variations（變異）．But, within six months of the discovery, genetic fingerprinting had been used in an immigration case, to prove that an African boy really was his parents’ son．·In 1986, it was used for the first time in a British criminal case: It cleared one suspect after being accused of two murders and helped convict another man．

DNA testing is now very common．In Britain, a national criminal database established in 1995 now contains 2．5 million DNA samples．The U．S．a(chǎn)nd Canada are developing similar systems． But there are fears about the stored DNA samples and how they could be used to harm a person’s privacy．That includes a person’s medical history, racial origin or psychological profile．“There is the long-term risk that people can get into these samples and start getting additional information about a person’s paternity（父子關(guān)系）or risk of disease,” Jeffrey said．

DNA testing is not an unfailing proof of identity．Still, it is considered a reasonably reliable system for determining the things it is used for．Jeffrey estimates the probability of two individuals’ DNA profiles matching in the most commonly used tests at one in a billion．

1．According to the text, DNA testing can NOT be used in _______ ．

A．doing criminal investigations        B．deciding family law

C．clearing wrongly accused people     D．telling twins apart

2．DNA samples are not popular with all the people because _______ ．

A．the government in Britain establishes a criminal database

B．the US and Canada develop similar systems

C．DNA samples can be used to harm a person’s privacy

D．DNA testing is too expensive and dangerous now

3．Where will you most probably find this article?

A．In a guidebook．                   B．In a storybook．

C．In a science fiction．                D．In a scientific magazine．

4．Which is the best title for the passage?

A．Discovery of DNA testing by Jeffery     B．Practice of DNA testing in court

C．DNA testing in the present situation       D．Benefits and side effects of DNA testing

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