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  3. Since Jonas Salk came up with his polio vaccine, infantile paralysis has virtual

Since Jonas Salk came up with his polio vaccine, infantile paralysis has virtual

游客2025-01-29  15
问题 Since Jonas Salk came up with his polio vaccine, infantile paralysis has virtually disappeared from the United States.
选项 A、survived from
B、eliminated
C、discovered
D、elevated
答案 C
解析 这句话的意思是：自从乔纳斯-索尔克发明脊髓灰质炎疫苗以来，小儿麻痹症实际上已经从美国消失了。画线短语come up with意为“想出、提出、提供”；discover意为“(首次)发现、发觉、找到”；survive from意为“存活下来”；eliminate意为“清除、根除”；elevate意为“提高、举起”。根据题意，答案为C。
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