Often they are very aggressive kids.

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Tziahanas, who works the compliance side of social media, said that as banks are starting their foray into social media the lawyers and compliance officers are very aggressive because they are scared of the new communications tools.

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"One of the more sensible explanations may be that when obese patients present to their doctor, they are given more aggressive treatment because they are seen as very high risk, " he explained.

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"They are talking about a very aggressive level of performance, " Henderson said.

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But they are steady, they keep their heads composed, and when they are on, they are very confident and can both be very aggressive.

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And they're very aggressive about wanting to make sure that these clean energy jobs are in their countries.

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The system is self-limiting because at some point, a very aggressive lender will overshoot, and lend at a rate at which they are not profitable.

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The males can be very aggressive and have been known to attack deer, dogs, sheep and even humans if they are disturbed.

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