[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. has been able to prove a suspect guilty
B. will lead a suspect to the spot of a crime
C. were at the scene with the suspect.
D. caught the suspect on the spot

[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]According to the fourth paragraph, Bevans was found guilty because he ______.


A. obeyed illegal orders
B. was accused of murder
C. disobeyed the superior orders
D. offended against the law of war

[单项选择]Your dislike for women drivers has no logical foundation; it is due only to______.


A. preference
B. prejudice
C. psychology
D. propaganda

[单项选择]Your refrigerator is not working and you have found that the electric power had been cut off. The power failure is a _____.


A. necessary cause
B. sufficient cause
C. contributory cause
D. none of the above

[单项选择]According to the passage, the lesion Balanoff found was _________.


A. usually caused by excessive smoking
B. an obvious case of cancer sores
C. a cancer lump
D. leading Zember to death

[单项选择]Which of the following laboratory results, if found, would be LEAST consistent with the author's explanation of the neurophysiology of taste
A. (A) A group of taste neurons is found which only responds to sweet taste when stimulated by sweet foods.
B. (B) A brain-wave analysis of a rat genetically engineered to lack a sense of sweet tastes is nevertheless found to have a sense of sour tastes.
C. (C) Most tastes are found to have strikingly different neurological effects on humans they do upon animals.
D. (D) A brain-wave analysis of a hamster demonstrates a similar pattern of activity in a given neurological area for both sour and sweet stimuli.
E. (E) A group of taste neurons is found which provides insufficient information for taste discrimination.

[单项选择]After several days' investigation, the police found out one clue that voices were heard ______for help from some very distant place that night.
A. to call
B. called
C. calling
D. call

[单项选择]When I visited your country again last year I found it completely（　）.
A. to be changed
B. changed
C. to change
D. changing