题目内容：
James
A．Passive smoking is the third preventable cause of death. B．Smokers have the fight to smoke.
C．Smoking produces some positive effects in some complex situations.
D．Second-hand smoke is more harmful to non-smokers than those cancer inducing air pollutants.
E．Cigarette pollution has caused outdoor environment even worse.
F．Smoking can help people get rid of nervousness.
G．Smoking is also an environmental issue.
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