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第四部分：阅读理解(第31~45题，每题3分，共45分)

下面有3篇短文，每篇短文后有5道题。请根据短文内容，为每题确定1个最佳选项。

第一篇

DNA testing

31. What is the main idea of this passage?

A. DNA testing has changed the American legal system.

B. DNA testing has helped innocent men go free in Illinois.

C. DNA testing uses genetics to identify a person.

D. DNA testing has played a key role in criminal investigation.

32. DNA testing was first used in a criminal case by

A. a lawyer in New York

B. students in Illinois

C. doctors in the United States

D. police in Great Britain

33. The innocence project uses DNA testing to

A. set free innocent prisoner

B. help the police put people in prison

C. find out which lawyer are incompetent

D. prove that suspects are guilty

34. Some students in Northwestern University

A. proved some prisoners were not guilty

B. believed some suspects were from ethnic groups

C. told the governors of Illinois not to free the prisoners

D. showed DNA testing was not always reliable

35. What is the author’s attitude toward DNA testing?

A. Negative

B. Positive

C. Suspicious

D. Indifferent

答案：31. What’s is the main idea of this passage?答案为D: DNA testing has played a key role in criminal investigation.相关句(文章最后两句)：But for those whose innocence has been proven and who are now free man, 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.32.DNA testing was first used in a criminal case by ___.答案为D. police in great Britain相关句：the very first use of DNA testing in a criminal case was in 1985 in great Britain.…because police had found samples of the killer’s DNA …33. The Innocence Project uses DNA testing to ___.答案为A. set free innocent prisoners相关句：in 1992, two law professors, decided to use DNA evidence to help set free such mistakenly convicted prisoner. They created a organization called the innocence project.34. Some students in Northwestern University____.答案为A. proved some prisoners were not guilty.相关句：The students (at Northwestern University)proved that in fact the prisoners were not guilty of the crime they had been accused of. 35. What is the author’s attitude towards DNA testing?答案为：B. positive