问题
选择题
The World Health Organization expects a vaccine(疫苗)against H1N1 to be by September or October this year.
A．aggressive
B．available
C．absolute
D．abnormal
答案
答案：B
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The World Health Organization expects a vaccine(疫苗)against H1N1 to be by September or October this year.
A．aggressive
B．available
C．absolute
D．abnormal
答案：B