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  Your cellphone holds secrets about you.Besides the names and numbers that you’ve programmed into it, traces of your DNA remain on it, according to a new study.

  DNA is genetic material that appears in every cell.Like your fingerprint, your DNA is unique to you-unless you have an identical twin.Scientists today usually analyze DNA in blood, saliva(唾液)or hair left behind at the scene of a crime.The results often help detectives identify criminals and victims.

  Meghan J.McFadden, a biologist at McMaster University in Hamilton, Ontario, heard about a crime in which the suspect bled onto a cellphone and later dropped it.This made her wonder whether traces of DNA remained on cellphones-even when no blood was involved.To find out, she and a colleague collected flip-style(翻盖式)phones from 10 volunteers.They collected invisible traces of the users from two parts of the phone:the outside, where the user holds it, and the speaker, which is placed at the user’s ear.

  The scientists cleaned the phones using a liquid mixture made mostly of alcohol.The aim of washing was to remove all detectable traces of DNA.The owners got their phones back for another week.Then they returned the phones and the researchers collected traces on each phone once more.They discovered DNA that belonged to the phone’s owner on each of the phones.

  Surprisingly, DNA was even picked up immediately after the phones were cleaned.That suggests that washing won’t remove all traces of evidence from a criminal’s cellphone.So cellphones can be added to the list of clues that can settle a crime-scene investigation.

(1)

In a crime-scene investigation, now experts are likely to turn to ________.

[  ]

A.

the criminal’s fingerprint

B.

the DNA analysis of physical items

C.

the detectives

D.

the criminal’s cellphone

(2)

According to the passage, McFadden was inspired by ________.

[  ]

A.

the secrets stored in people’s cellphones

B.

the special characters of DNA

C.

a cellphone-involved case

D.

the challenging job of detectives

(3)

According to the passage, the potential application of the new study would be ________.

[  ]

A.

identifying criminals

B.

designing new cellphones

C.

protecting individual privacy

D.

preventing cellphone-involved crimes

(4)

Which of the following has the closest meaning with the underlined word“identify”in Paragraph 2?

[  ]

A.

imagine

B.

recognize

C.

discover

D.

determine

答案:1.B;2.C;3.A;4.B;
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  New York , May 25?   Millions of volunteers (志愿者)joined in a long chain spreading 4 125 miles across the world's richest nation Sunday and burst into songs , reaching the highest development in the Hands Across America road to raise 50 million for the nation's homeless and hungry.

  

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[  ]

     

A.Millions of volunteers support the poor.

     

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C.The homeless and poor need help.

     

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A.They were hand in hand.

  

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阅读理解

  New York , May 25?   Millions of volunteers (志愿者)joined in a long chain spreading 4 125 miles across the world's richest nation Sunday and burst into songs , reaching the highest development in the Hands Across America road to raise 50 million for the nation's homeless and hungry.

  

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A.Millions of volunteers support the poor.

     

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D.The richest nation faces the problem.        

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[  ]

                          
  

A.try to lift

  

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ISC(HS)Reference No.S006864            New South Wales

Student Date of Birth:19/08/1988   Department of Education and Training

                     International Students Centre

Hong Xue              827-839 George Street PO Box 707

60 Waratah Street                Broadway NSW 21007

Croydon Park NSW 2133       Phone:(612)9217 4801 1300 302 456

                        Fax:(612)9212 6721

                 http://www.tafensw.edu.au/international/

WARNING LETTER

Dear Hong Xue,

  As you are aware, your student visa regulations set out a number of conditions applying to your visa.It has come to our attention that you are failing to meet the following conditions:You must maintain accommodation, support and general welfare arrangements that have been approved by your education provider if you:

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[  ]

A.

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B.

To warn the recipient not to do anything against his student visa regulations again.

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To inform the recipient of the student visa regulations.

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He is under 18 and studies in Australia with his parents.

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[  ]

A.

Hong Xue at 60 Waratah Street, Croydon Park NSW 2133.

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Tracey Carlon at the Department of Immigration and Multicultural and Indigenous Affairs.

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Hong Xue at NSW Department of Education and Training.

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Tracey Carlon at 827-839 George Street, PO Box 707, Broadway NSW 21007.

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(1)

[  ]

A.

stay

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D.

die

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A.

earth

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moon

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star

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A.

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[  ]

A.

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A.

warmth

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sadness

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depression

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(6)

[  ]

A.

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common

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scarce

(7)

[  ]

A.

at midnight

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at noon or at night

C.

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D.

during the day

(8)

[  ]

A.

gift

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honor

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thought

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respect

(9)

[  ]

A.

for more

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any more

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very much

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(10)

[  ]

A.

turn to

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fight for

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struggle with

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disadvantages

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weakness

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[  ]

A.

gently

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by chance

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[  ]

A.

amongst

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by

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for

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[  ]

A.

others

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themselves

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the other

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the rest

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A.

equal and simple

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ordinary and similar

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more or less

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unique and different

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each other

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me

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them

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combined

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separated

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cleans

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appreciate

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quarrel with

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ignore

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阅读理解。

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