More people die of tuberculosis (结核病) than of any

  other disease caused by a single agent. This has probably

  been the case in quite a while. During the early stages of S1. ________

  the industrial revolution, perhaps one in every seventh S2. ________

  deaths in Europe's crowded cities were caused by the S3. ________

  disease. From now on, though, western eyes, missing the S4. ________

  global picture, saw the trouble going into decline. With

  occasional breaks for war, the rates of death and

  infection in the Europe and America dropped steadily S5. ________

  through the 19th and 20th centuries. In the 1950s, the

  introduction of antibiotics (抗菌素) strengthened the

  trend in rich countries, and the antibiotics were allowed

  to be imported to poor countries. Medical researchers S6. ________

  declared victory and withdrew.

  They are wrong. In the mid-1980s the frequency of S7. ________

  infections and deaths started to pick up again around the

  world. Where tuberculosis vanished, it came back; in S8. ________

  many places where it had never been away, it grew better. S9. ________

  The World Health Organization estimates that 1.7

  billion people (a third of the earth's population) suffer

  from tuberculosis. Even when the infection rate was

  falling, population growth kept the number of clinical

  cases more or less constantly at 8 million a year. Around S10. ________

  3 million of those people died, nearly all of them in poor countries.

  【答案请见下页】

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