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People are always naturally more attracted to things that are bad for them than they are to things that are good for them. Alcohol and cigarettes are two examples. People know these things are bad for them, yet they continue using them. Alcohol and cigarettes are the two greatest killers in the world. Hundreds of thousands of people have died because of these two social evils. As a result, some governments are trying to control the use of these drugs. For example, in many countries, the legal age for drinking has been raised from eighteen to twenty-one. Some countries have even banned smoking in public places. People can help each other live longer by simply discouraging these bad habits. | 
发表于 2010-9-16 08:23
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