The most important medical advance of all time was Alexander Fleming's discovery of
penicillin in 1928.

Penicillin, the first widely used antibiotic, has saved millions of lives around
the world. Due to the overuse of penicillin and other antibiotics, some bacterial infections
have become harder to treat.

Read the excerpt below from the poem "exile" by julia alvarez and answer the question that follows. i let myself lie back in deep waters, my arms out like jesus' on his cross, and instead of sinking down like i'd always done, magically, that night, i could stay up, floating out past the driveway, past the gates, in the black ford, papi grim at the wheel, winding through the back roads, stroke by difficult stroke, out on the highway, heading toward the coast. which literary device is used in the comparison between the speaker's experience of fleeing the country and floating in the ocean? i let myself lie back in deep waters, my arms out like jesus' on his cross, and instead of sinking down like i'd always done, magically, that night, i could stay up, extended metaphor symbolism simile theme