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PASSAGE THREE [br] How do the traditional vaccines work?To provoke an immune sys
PASSAGE THREE [br] How do the traditional vaccines work?To provoke an immune sys
游客
2024-09-10
23
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问题
PASSAGE THREE [br] How do the traditional vaccines work?
选项
答案
To provoke an immune system.
解析
原文最后一段对传统疫苗和新型疫苗进行对比描述,传统疫苗运用已经死亡或濒临死亡的病毒来培养人体免疫系统。故答案为“To provoke an immune system.”。
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