[填空题]Because the disease of AIDS damages the immune system of a person, the person has less ability to defend himself from infection and disease.

[单项选择] AIDS AIDS is Acquired Immune Deficiency Syndrome. The human immunodeficiency virus (人类免疫缺损病毒)called HIV is believed to cause AIDS. There is no cure. People who get the disease will die. AIDS itself does not kill. However, it attacks and destroys the body’’s defense system that fights against infection. When this happens, a person has little ability to fight off many other diseases including pneumonia(肺炎), cancer and tuberculosis (结核病). A new study says the number of women in the United States with AIDS has increased sharply. The study says AIDS is increasing faster among women than among men. Eighteen percent of AIDS patients are women. This is almost 3 times the rate 10 years ago. Most women get the AIDS virus from having sexual relations with men. Pregnant women with the disease can pass it to their babies. The effect of AIDS in America is greatest in large cities. AIDS is the leading cause of death among all people in 79 cities. It is th
A. A man with AIDS passes the disease to his wife.
B. A pregnant woman with AIDS passes it to her baby.
C. A doctor with AIDS passes the disease to his or her patients.
D. A person with AIDS passes it to another person who share needles with the former to pull illegal drugs into their blood.