問題詳情

II.A new form of identification relies on DNA, which carries the genetic information of each person. Everyone’s DNA is different except for identical twins. DNA profiling or typing is sometimes called DNA fingerprinting because it allows police to identify an individual in the same way as fingerprints do. DNA can be extracted from any body fluid or from fragments of a body.Forensic scientists do not look at the whole of a person’s DNA sequence, but rather a sub-set of a DNA profile. DNA profiles are a very powerful means of determining whether two or more samples may or may not have come from the same person. If DNA profiles do not match, they came from different people. However, if they do match, there is still a very slight chance that they may have come from different people.DNA is the same in every cell of the body, and stays the same throughout life. As such, DNA profiles taken at different times and places can be compared in order to determine whether or not they come from the same person. (excerpted from Professional Police English by Central Police University Press, 2011)
47.The article is about _____________.
(A) what DNA is
(B) how to make DNA
(C) where to store DNA
(D) why fights DNA in the lab
(E) when to extract DNA

參考答案

答案：A
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)

內容推薦

內容推薦