This region may have as many as 5 million cases of AIDS in 2016 if the________is not taken seriously.

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问题 This region may have as many as 5 million cases of AIDS in 2016 if the________is not taken seriously.

选项 A、disease
B、virus
C、bacterium
D、gene

答案A

解析 如果人们再不重视艾滋病这一疾病,该地区到2016年患艾人数可能会增加至500万。A项disease“疾病,病害”,B项virus “病毒;病毒性疾病”,C项bacterium“细菌” ,D项gene“基因,遗传因子”。
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