Passage Three [br] How do traditional vaccines work?To provoke immune systems wi

游客2023-10-21 71

问题 Passage Three [br] How do traditional vaccines work?

选项

答案 To provoke immune systems with dead or weakened live viruses.

解析原文最后一段对传统疫苗和新型疫苗进行对比描述，传统疫苗使用死亡的或弱化的病毒来激发免疫系统，故答案为“To provoke immune systems with dead or weakened live viruses.”。

转载请注明原文地址:https://tihaiku.com/zcyy/3118317.html

相关试题推荐

随机试题

最新回复(0)

PassageFour[br]Wherewasthenorthernlightsseensothatitearnedthename