11. What is the primary purpose of this passage?
(A) to show that DNA is a powerful investigative tool
(B) to illustrate how the unique characteristics of DNA make different types of comparisons and
eliminations possible
(C) to teach the reader that identical twins have the same DNA
(D) to show how laboratory technicians develop DNA profiles
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統計: A(547), B(249), C(37), D(30), E(0) #1829956
統計: A(547), B(249), C(37), D(30), E(0) #1829956