Section ⅣLearning about Language & Using Language

　　[原文呈现][读文清障]　

　　HIV/AIDS: ARE YOU AT RISK①？

　　HIV② is a virus. A virus is a very small living thing that causes disease. There are many different viruses, for example, the flu virus or the SARS③ virus. HIV weakens a person's immune④ system; that is, the part of the body that fights disease. You can have HIV in your blood for a long time, but eventually HIV will damage your immune system so much that your body can no longer fight disease. This stage of the illness is called AIDS⑤. If you develop AIDS, your chances⑥ of survival⑦ are very small.

　　HIV is spread through blood or the fluid⑧ that the body makes during sex⑨. For a person to become infected⑩， blood or sexual fluid that carries the virus, has to get inside the body through broken skin or by injection. One day scientists will find a cure for⑪ HIV/AIDS. Until that happens, you need to protect yourself. Here are some things you can do to make sure you stay safe⑫.

　　①at risk 处境危险；遭受危险

　　②HIV(Human Immunodeficiency Virus)人体免疫缺损病毒(艾滋病病毒)

　　③SARS(Severe Acute Respiratory Syndrome)非典型性肺炎(严重急性呼吸道综合征)

　　④immune/I'mjuːn/adj.有免疫力的

　　⑤AIDS/eIdz/(Acquired Immune Deficiency Syndrome)艾滋病(后天免疫缺损综合征)

　　⑥chances此处指"某事发生的可能性"。

　　⑦survival/sə'vaIvl/n.幸存

⑧fluid/'fluːId/n.流体；液体