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 the leading cause of death among women in 15 cities. These include New York City and Miami, Florida. Doctors in the United States first noted AIDS 14 years ago in homosexual (同性恋的)men in New York and California. In the United States AIDS spread first among homosexual men. Then it appeared in people who shared needles to put illegal drugs into their blood. It also appeared in people who had received infected blood products at hospitals. The AIDS virus is spread through the exchange of infected blood or body fluids released during sexual activity. It is also spread by having sexual relations with someone who has the virus. And it is spread by sharing drug needles that have infected blood on them. AIDS has affected several famous American athletes. Two years ago, former tennis player Arthur Ashe died of the disease. At about the same time, former basketball player Magic Johnson announced that he has the AIDS virus. The most recent athlete to be affected is Gregory Louganis. Louganis won a number of gold medals in Olympic diving competition. He announced on television that he has AIDS. President Clinton met with Louganis and praised him for discussing his sickness. Mr. Clinton said it is important to educate the public. Activists have succeeded in educating Americans about AIDS and the people who have it. They also have been urging the federal government to increase efforts to find a cure for AIDS. Scientists first identified the virus that is believed to cause AIDS in 1983. Many of them then thought they could produce an anti-AIDS vaccine(痘苗). Such a medicine could be given to people to protect against the disease. However, scientists at American government agencies, universities and drug companies have failed to produce an anti-AIDS vaccine. But they are continuing effort to find better treatments for a cure. Have scientists produced an ant-AIDS vaccine?-综合类-总题库

______ you ______ out for a walk after supper Yes, I ______.

A:Did; went; went B:Did; go; went C:Did; went; did D:Did; go; did

—She didn’t come to school yesterday, did she
—______, though she was not feeling very well.

A:No, she didn’t B:Yes, she didn’t C:No, she did D:Yes, she did

—She didn't come to school yesterday, did she
—______, though she was not feeling very well.

A:No, she didn't B:Yes, she didn't C:No, she did D:Yes, she did

A: （）you （）the football match yesterday
B: Yes, I did. It was great.

A:Did; see B:Have; seen C:Will; see D:Were; seen

A: （）you （）the football match yesterday
B: Yes, I did. It was great.

A:Did; see B:Have; seen C:Will; see D:Were; seen

A: （）you （）the football match yesterday
B: Yes, I did. It was great.

A:Did; see B:Have; seen C:Will; see D:Were; seen

______ you ______ out for a walk after supper Yes, I ______.

A:Did; went; went B:Did; go; went C:Did; went; did D:Did; go; did

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