【单选题】回答{TSE}题: DNA testing DNA testing reveals the genes of each individual person. Since the early twentieth century scientists have known that all human characteristics are contained in a person's genes ...
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.
【简答题】阅读理解 Ever since I was a child, my mouth has caused me trouble. I'm not a bad person; I have a hard time learning when to keep my mouth closed. My mom has told me again and again, 'Robert, your constan...