The incidence of this disease has been greatly reduced thanks to our health care program.

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问题 The incidence of this disease has been greatly reduced thanks to our health care program.

选项 A、seriousness
B、frequency of occurrence
C、mortality
D、cure rate

答案B

解析 空格处的意思是:这种疾病的发病率大大减少要感谢我们的医疗保健项目。划线单词incidence的意思是“发生(率);影响;影响的方式”。各选项的意思是:seriousness“严肃,认真”;frequency of occurrence“发生频率”;mortality“死亡率”;cure rate“治愈率”。
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