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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
2025-02-03
37
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问题
Since Jonas Salk came up with his polio vaccine, infantile paralysis has virtually disappeared from the United States.
选项
A、surfaced with
B、raised the price of
C、discovered
D、elevated
答案
C
解析
come up with想出,提出,提供;raise the price of抬高……的价格:discover (首次)发现,发觉,找到;因此C为答案。
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