[单项选择]The healing power of maggots is not new. Human beings have discovered it several times. The Maya are said to have used maggots for therapeutic purposes a thousand years ago. As early as the sixteenth century, European doctors noticed that soldiers with maggot-infested wounds healed well. More recently, doctors have realized that maggots can be cheaper and more effective than drugs in some respects, and these squirming larvae have, at times, enjoyed a quiet medical renaissance. The problem may have more to do with the weak stomachs of those using them than with good science. The modern heyday of maggot therapy began during World War Ⅰ, when an American doctor named William Bayer was shocked to notice that two soldiers who had lain on a battlefield for a week while their abdominal would became infested with thousands of maggots, had recovered better than wounded men treated in the military hospital. After the war, Bayer proved to the medical establishment that maggots could cure some of
A. maggots come from eggs
B. maggots eat bacteria
C. maggots are larvae
D. William Bayer discovered a new type of maggot

[单项选择]The healing power of maggots is not new. Human beings have discovered it several times. The Maya are said to have used maggots for therapeutic purposes a thousand years ago. As early as the sixteenth century, European doctors noticed that soldiers with maggot-infested wounds healed well. More recently, doctors have realized that maggots can be cheaper and more effective than drugs in some respects, and these squirming larvae have, at times, enjoyed a quiet medical renaissance. The problem may have more to do with the weak stomachs of those using them than with good science. The modern heyday of maggot therapy began during World War Ⅰ, when an American doctor named William Bayer was shocked to notice that two soldiers who had lain on a battlefield for a week while their abdominal would became infested with thousands of maggots, had recovered better than wounded men treated in the military hospital. After the war, Bayer proved to the medical establishment that maggots could cure some of
A. Because of the resistance to using the benefits of maggots.
B. To demonstrate the important contribution of William Bayer.
C. To outline the healing power of maggots.
D. To explain treatment used before the first antibiotics.

[单项选择]