[填空题]

Passage One
The improbable chain of events that leads Alexander Fleming 1.______
to discover penicillin in 1928 is the stuff which scientific myths 2.______
are made. It was a discovery that would change the course of the
history, The active ingredient in that mold, which Fleming
named penicillin, turned to be an infection-fighting agent of 3.______
enormous potency. When it was finally recognized as what it
was—the efficacious life-saving drug in the world—penicillin 4.______
would alter forever the treatment of bacterial infections. By the
middle of the century, Fleming’s discovery spawned a huge phar- 5.______
maceutical industry, churning out synthetic penicillin that would
conquer some of man-kind’s most ancient scourges, including
syphilis, gangrene, and tuberculosis.
When he died a heart attack in 1955, he was mourned by 6.______
the world and buried as a natio