B, tuberculosis is caused by mycobacterium tuberculosis, hepatitis B is caused by hepatitis B virus, and hepatitis B virus is caused by pathogens such as bacteria and fungi. This is an infectious disease, which can spread between people or between people and animals.
C, people who have suffered from chickenpox, chickenpox virus enters the human body, stimulating human lymphocytes to produce antibodies, and antibodies remain in the human body forever after destroying chickenpox virus, which is in line with the question.
D. The main transmission routes of AIDS are: sexual transmission, intravenous drug use, mother-to-child transmission, blood and blood products transmission, etc. However, daily contact such as talking, shaking hands and hugging, courtesy kissing, eating and drinking together, * * using toilets and bathrooms, * * using offices, public transportation and entertainment facilities will not spread HIV. ..
So choose: C.