The scientists discovered DNA that 63 to the phones speaker on each of the phones. Better samples were collected from the outside of each phone, but those swabs also picked up DNA that belonged to other people who had apparently also handled the phone. 64, DNA showed up even in swabs that were taken immediately after the phones were scrubbed. That suggests that washing wont remove all traces of evidence from a criminals device. So cell phones can now be added to the 65 of clues that can clinch a crime-scene investigation.
51
A numbers
B music
C secrets
D films
52
A appeals
B appoint
C appears
D applies
53
A because
B unless
C although
D still
54
A about
B in
C for
D behind
55
A criminals
B people
C men
D policemen
56
A when
B until
C before
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