题目内容
So far, several cases of a disease, ___________as H1N1, are reported to have been found in the country.
A. knowing B. to be known C. having known D. known
D
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题目内容
So far, several cases of a disease, ___________as H1N1, are reported to have been found in the country.
A. knowing B. to be known C. having known D. known
D
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||