What's the main writing purpose of Text A?
A、Toexplainwhytheoldinfectiousdiseasesresurge.;
B、Todiscussthemeasuresthatweshouldtaketopreventandreducethethreatsfrominfectiousdiseases.;
C、Toprovideascientificexplanationforemergingandre-emerginginfectiousdiseases.;
D、Tocallforuniversalconcernovertheresurgentandre-emergentdiseases.
发布时间：2024-09-26 19:22:59
