研究1下：1）閻先生自述，年內反複感冒3次。2）感冒分2種：A普通感冒，B流感。此2種感冒皆主要由病毒感染引發。

來源: 大江川於 2020-11-29 18:40:16 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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