What is the relationship between external and internal causes of cancer?
A、Externalcausesactthroughinternalcauses;
B、Bothexternalandinternalcausesplayarole;
C、Internalcausesactthroughexternalcauses;
D、Thereisnodirectconnectionbetweenthetwo
发布时间：2025-08-13 06:00:07
