题目内容：
One reason why the outbreak of the disease was not discovered sooner was that____________
参考答案：
答案解析：
单选题：One reason why the outbreak of the disease was not discovere
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Through receiving financial support from family, community o
Through receiving financial support from family, community or the government, is
统计资料的收集中，报告单位与调查单位有时一致有时又不一致。（ ）
统计资料的收集中，报告单位与调查单位有时一致有时又不一致。（ ）
The complete range from sizes and shapes of the human popula
The complete range from sizes and shapes of the human population can be examined
下列属于时期指标特点的有（ ）。
下列属于时期指标特点的有（ ）。
（ ）是指用点、线等符号计算总体和各组单位数的方法。
（ ）是指用点、线等符号计算总体和各组单位数的方法。