According to the passage，what was the strategy used to eliminate the s-考呗网

单选题According to the passage，what was the strategy used to eliminate the spread of smallpox?

细节题型
见第三段第一句：采取的策略不光是提供大范围的接种疫苗，还采取了将病人隔离以达到抑制疾病传播和打破人际传播的链环。因此答案为C。

1The word“isolated”underlined in Paragraph 4 most probably means________．

2How was the public motivated to help the health workers?

3The word“they”underlined in Paragraph 4 refers to________．