• 2022-06-01 问题

    _________ is a substance that is put into the blood and that protects the body from a disease. A: Vaccine B: Vakine C: Vacsine D: Vacine

    _________ is a substance that is put into the blood and that protects the body from a disease. A: Vaccine B: Vakine C: Vacsine D: Vacine

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