单选题Since Jonas Salk came up with his polio vaccine, infantile paralysis has virtually disappeared from the United States.Asurfaced withBraised the price ofCdiscoveredDelevated
单选题
Since Jonas Salk came up with his polio vaccine, infantile paralysis has virtually disappeared from the United States.
A
surfaced with
B
raised the price of
C
discovered
D
elevated
参考解析
解析：
习语辨析题。句意：自从Jonas Salk发现小儿麻痹的疫苗，美国的小儿麻痹症几乎消失了。come up with在这里意为“想出”。discover意为“(首次)发现，找到”用在句中符合句意，所以选C。raise the price of抬高……的价格。elevate举起；提拔。
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