托福delta综合练习第一篇 ---- Antibiotic，求教，请猛拍~

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In thereading part, the writer hold the opinion that antibiotic is the most dramatic medicalwhen counteract infection. First, antibiotic can help patients destroymicroorganism without any adverse effects on human’s body immune system.Secondly, antibiotic was used as wonder drug to directly fight with disease andreduce the number of deaths from some lung diseases.
The professor hasdifferent standpoint. He convinced that due to the abuse of antibiotic, manynew kinds of bacteria appeared to drug resistance. And antibiotic resistance isa threat to public health. Twenty years ago, people can treat bacterialinfection with a little of antibiotic injection. But today, if you use samedose, you may die. Professor thought bacteria are smarter than human beings. Whendoctors use drugs to defeat bacteria, bacteria produce enzymes to match withthe antibiotic, by this way, bacteria make those drugs useless. Once one kindof bacteria was killed by antibiotic, there are many other strains of bacteria emergedsoon. Professor gives a reason that there is always few lucky cells withresistance gens survived from the antibiotic, and accuse to their effectiveevolvement, those bacteria will multiply quickly, and most of their offspringare born with the same genes. Tuberculosis is powerful evidence. Several yearsago, people thought tuberculosis had been defeated. But the fact is that newcases of this disease have increased. What’s worse, there are some strains ofsuper bacterial exist.