问题
填空题
In the past, many doctors managed to fool patients by taking advantage of ______.
答案
参考答案：public ignorance
解析：[定位] 由题干中的take advantage of定位到文章第2段第2句They claimed to be able to work medical miracles， relying on public ignorance of medicine for their “success”。
[精解] 此处需要填入名词性成分，作take advantage of的宾语。题目中的take advantage of与文中的rely on同义，因此应填入public ignorance。
