哈尔滨的立冬奇冷奇冷，滴水成冰。市民出门都裹得严严实实的，恨不得早些走进温暖的空调房。在这样寒冷的天气里，为了迎接世界艾滋病日的到来，我一个人站在冷清的中央大街上，向往来的路人发放预防艾滋病的宣传资料，为防艾事业做一份微薄的贡献。
无论人家背后如何指指点点，还是路人高枕无忧的态度，我都没有在意。我能做的，就是用自己的力量将防艾知识送入人们心中。
叔叔，后天就是世界艾滋病日了，请您支持一下中国的防艾事业，了解一下预防艾滋病的知识。阿姨，请您看一下，这是预防艾滋病的宣传资料，相信它一定能给你和你的家人送去一份健康。很多人都愉快地收下、道谢，似乎对我这个站在冷风中的孩子心生同情。寒冷的季节里，也不乏温暖的时刻。当我为一个孩子佩戴一枚红丝带时，一时感叹，人性中竟有这样美好的时刻。
在发放宣传资料时，一位穿着入时的女士接到传单，白了我一眼后将传单扔到地上。那一刻我很心痛，望着她的背影，我明白志愿者的道路绝非坦途，但这却更坚定了我的决心。
更恼人的是人们的世俗与偏见。我在附近的一家建筑工地发宣传资料，一群工人拿过传单后不屑地笑了起来：愿啥病啥病吧，我们干活哪能听你吹嘘？我急忙为他们讲解艾滋病的预防知识。然而，我的讲解也是徒劳的。我默然无语，心想：一个人没有预防知识，就等于没有健康，没有健康，又何谈劳动？
三个小时后，天色暗了下来，我已发了2300份宣传资料，还有些剩余，我便抓紧时间，趁着天黑之前发放完毕。这时，一位好心的老奶奶向我多要了几张，要为我减负。我说，自己的目的是让大家对艾滋病有所认识，完全出于自愿。四个小时内，我发放了宣传资料3000余份。天气虽然寒冷，但我的心滚烫、情火热。
周南初三:何文昊
aids is the abbreviation1) of acquired immune deficiency syndrome．it is a complicated illness that may involve several phases．it is caused by a virus that can be passed from person to person．aids impairs the human bodys immune system，the system responsible for keeping off disease，and leaves the victim easily affected by various infection．
the virus enters the bloodstream and destroys certain white blood cells，called t lymphocytes2)，which play a key role in the functioning of the immune system．the virus can also infect other types of cells in the body，including the immune－system cells knows as macrophages3)．unlike t lymphocytes，however，macrophages are not killed by the virus．
most people recently infected by the aids virus look and feel healthy．in some people the virus may remain inactive，and these people act as carriers，remaining apparently healthy but still able to infect others．after a few years，some people may develop aids－related complex，or arc．its symptoms may include fever，fatigue4)，weight loss，skin rashes，a fungal5) infection of the mouth known as thrush，lack of resistance to infection，and swollen lymph nodes．
aids is spread by direct infection of the bloodstream with body fluids that contain the aids virus，particular blood and semen from an hiv－infected person．the virus is usually spread through various forms of sexual intercourse，the transfusion of virus－infected blood，or the sharing of hiv－contaminated intravenous6) need les．
the world health organization says as many as 10 million persons worldwide may have the virus(病毒) that causes aids.experts believe about 350 thousand persons have the disease.and one million more may get it in the next five years.in the united states,about 50,000 persons have died with aids.the countrys top medical official says more than 90 percent of all americans who had the aids virus five years ago are dead.?
there is no cure for aids and no vaccine(疫苗) medicine to prevent it.however,researchers know much more about aids than they did just a few years ago.we now know that aids is caused by a virus.the virus invades healthy cells including white blood cells that are part of our defense system against disease.it takes control of the healthy cells genetic(遗传的) material and forces the cell to make a copy of the virus. the cell thendies.and the viral particles move on to invade and kill more healthy cells.the aids virus is carried in a persons body fluids.the virus can be passed sexually or by sharing instruments used to take intravenous(静脉内的) drugs.it also can be passed in blood products or from a pregnant woman with aids to her developing baby.?
many stories about the spread of aids are false.you cannot get aids by working or attending school with someone who has the disease.you can not get it by touching,drinking glasses or other objects used by such persons.experts say no one has gotten aids by living with,caring for or touching an aids patient.?
there are several warning signs of an aids infection.they include always feeling tired,unexplained weight loss and uncontrolled expulsion of body wastes(大小便失禁). other warnings are the appearance of white areas on the mouth ,dark red areas of skin that do not disappear and a higher than normal body temperature.
