新东方GMAT线上培训

　　Finally, even if the Saluda water is the major reason why the residents of Saluda are less hospitalized, the argument still omits the fact that there is more than one way to keep drinking water free from bacteria. For instance, the most common practice is to boil water up to 100 degree Celsius and keep it at that degree for more than 5 minutes. Therefore drinking Saluda water to keep good health is not the only alternative.

　　Thus, the argument is not completely sound. The evidence in support of the conclusion that the Saluda residents are less hospitalized does little to prove the conclusion that drinking Saluda Natural Spring Water is a wise investment in good health since it omits the assumptions I have just raised. The argument might have been strengthened by making it plain that Saluda Natural Spring Water is the major reason why the residents of Saluda are less hospitalized, that the water contains all the major minerals essential for the human bo