教学ppt课件 高二unit 7 warming-up,listening,speaking.pptVIP

Homework: How HIV is transmitted? write a short passage about what you have learned in this period. Living With Disease 防病小知识HIV与AIDS的区别 许多人将HIV与AIDS混为一谈，其实他们相关又有区别； HIV（human immunodeficiency virus,hiv）中文翻译为人类免疫缺陷病毒。 AIDS（acquired immuno --deficiency syndrome）中文翻译为获得性免疫缺陷综合征。 AIDS一般的定义是：血液中查到人类免疫缺陷病毒抗体或其他相关的病毒学指标，又患上一种规定的25种指征性疾病（包括各种机会性感染和继发性肿瘤）者。 还有一种称HIV感染者定义是：血液呈HIV阳性而无症状的感染者。AIDS是由HIV所引起，是一个人感染上HIV后的最后阶段；在此之前，已存在漫长的感染阶段（6--15年不确定），其特点是血液HIV抗体呈阳性（或其他HIV指标阳性），没有任何症状，机体功能完整，具感染性，也就是HIV感染者或称带毒者。 Disease (what is the name?) Suffers (who gets it easily?) Ways (How is it infected?) Symptoms (What is it like?) SARS Flu anyone breathing system high fever, coughing, breathing difficulty the weak (children, the old) breathing system high fever, coughing, headache, sore throat AIDS quiz: Only weak people get AIDS. ( ) One can become infected with HIV by swimming in a pool,holding hands or kissing someone with HIV. ( ) In 2002, there were 42 million people living with AIDS in the world. ( ) People who haven’t injected drugs do not need to get tested for HIV. ( ) F F T F 5. If I had HIV, I would know because I would feel sick. ( ) 6. HIV/AIDS is difficult to cure. ( ) 7. People who have HIV look different from everyone else. ( ) 8. It is safe to be friends with people who are living with HIV/AIDS. ( ) F T F T shaking hands, hugging or kissing? coughing or sneezing getting a mosquito or insect bite sharing food, eating or drinking utensils(器皿) using drinking fountains(设于公共场所的)自动饮水器 using toilets or showers using a public phone using public swimming pools opening a door Family, friends and co-workers should not fear becoming infected with HIV through casual(偶然的, 不经意的, 临时的) contact(接触, 联系 ) with an HIV-infected person at home, at work, or socially. These activities will not transmit the virus. How HIV is transmitted? ? 爱滋病通过性接触、血液和母婴三种途径传播　　在世界范围内