题目内容
30. In some countries, treatments for A(H1N1) flu were neither ________ nor effective, and many patients died because of infection.
A. critical B. scientific C. necessary D. Special
B
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题目内容
30. In some countries, treatments for A(H1N1) flu were neither ________ nor effective, and many patients died because of infection.
A. critical B. scientific C. necessary D. Special
B