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A person can easily be identified if she/he has ever used cocaine, explosive or other materials.
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Either new techniques or the existing ones are supposed to be used to help progress in forensics.
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Ramsey's family was thought to be guilty for having murdered JonBenet.
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In the fingerprint analysis a solvent is not enough to recognize compounds at fairly high concentrations.
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Cooks explained that, as cocaine and military explosives are likely to be difficult to be taken off, traces of them can be detected in a file or plastic binder if touched by someone who used them.
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Cocaine and military explosives remain for a longer time in one's finger tips.
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In the text, "telltale" (l.2) means revealing or indicating something.
The purpose of this article is to
"This tactic" (line 6) refers to which of Shaun Osher's behavior?
In "One person could handle an issue that should take two minutes," (lines 14-15), "handle" means "to deal with". Mark the sentence in which the word "handle" is used in the same way.
