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Response A       Score:_____

   The lecture discusses the resistance of bacteria to antibiotics, which differs from the main idea in the reading that antibiotics are “wonder drugs.” When antibiotics were developed in the 1940s, they were successful in curing many diseases. However, bacteria quickly became resistant to some drugs. Today, many people in hospital take antibiotics, but there is the serious danger of hospital infections. Penicillin used to cure diseases such as pneumonia, but today people might still die because bacteria are resistant to the drug.

   Bacteria develop resistance to antibiotics because they evolve weapons against the drugs. They can evolve strategies to fight any drug we give them. This situation is similar to the weapons of two armies use in a war. When you treat a disease with an antibiotic, it will kill the bacteria. However, a few cells will survive. Soon the new type of bacteria will appear, and resistant to the antibiotic. Therefore, we should not consider antibiotics as wonder drugs because the bacteria also have strong weapons.

   One result of antibiotic resistance is the increase in new cases of tuberculosis. Doctors used to believe that antibiotics were powerful weapons against diseases such as tuberculosis. However, today several types are resistant to antibiotics, so it is a new and serious problem. This is another reason why antibiotics are not wonder drugs.

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