[单项选择]The attitude of the Federal Bureau of Investigation shows that ________.


A. enough data are yet to be collected from various ethnic groups to confirm the unlikelihood of two DNA samples coming from two individual members
B. enough data of DNA samples should be collected to confirm that only DNA samples from the same person can match
C. enough data are yet to be collected from various ethnic groups to determine the likelihood of two different DNA samples coming from the same person
D. additional samples from various ethnic groups should be collected to determine that two DNA samples are unlikely to come from the same person

[单项选择]The attitude of the Federal Bureau of Investigation shows that ______.
A. enough data are yet to be collected from various ethnic groups to confirm the unlikelihood of two DNA samples coming from two individual members
B. enough data of DNA samples should be collected to confirm that only DNA samples from the same person can match
C. enough data are yet to be collected from various ethnic groups to determine the likelihood of two different DNA samples coming from the same person
D. additional samples from various ethnic groups should be collected to determine that two DNA samples are unlikely to come from the same person

[单项选择]

The FBI (Federal Bureau of Investigation) had found a new way to catch criminals by looking at their jeans. Scientists from the bureau reported at last weeks meeting of the American academy of Forensic Sciences in San Francisco that every pair of blue jeans has a unique wear pattern. The FBI has already used this "bar code "to place a suspect at the scene of a crime.
Richard Vorder Bruegge, a scientist at the FBI laboratory in Washington D. C. , and his colleagues developed the technique while helping to identify suspects who were robbing banks and setting off bombs ii1 Washington In April 1996, one of the gang was caught on film . He was wearing a mask, but part of his trousers was visible.
When the photograph was enlarged Vorder Bruegge noticed light and dark lines running across the seam of the man’ s jeans. His team found that the pattern originated from slight imperfections introduced when the trousers were made. Workers sew the seams by pushi
A. Pairs of jeans could be to91d from one another.
B. An expert witness supported the FBI
C. The defense gave a call to the jeans exporter.
D. All jeans have common patterns.

[单项选择]Have a happy attitude. Your attitude decides the way you see things. Is your cup half full or half empty: learn to think more positively about the difficulties you face.

[单项选择]What is the editor's attitude


A. Support.
B. Distaste.
C. Disapproval.
D. Compromis