高中英语 Unit 3 Protecting our selves SectionⅠ学案 牛津译林版选修10-牛津版高二选修10英语学案

Unit 3 Protecting ourselves句型while 引导的状语从句语法The development of a text写作Writing an article giving advice and warnings考点speed whileWhere Did HIV Come From?Scientists believe HIV came from a particular kind of chimpanzee in Western Africa.Humans probably came in contact with HIV when they hunted and ate infected animals.Recent studies indicate that HIV may have jumped from monkeys to humans as far back as the late 1800s.Should I get tested?You should get tested immediately if you have：Shared needles or syringes for drugs ， steroids ， tattooing ， or piercing ； Had unprotected sex (anal，oral，or vaginal) with multiple people，strangers，or men who have sex with men ； Been diagnosed with hepatitis ， tuberculosis (TB) ， or a sexually transmitted infection (STI)；Had unprotected sex with someone who does any of the above；Been sexually assaulted.If you continue to engage in any of these highrisk behaviors，you should get tested every 6 months.Where can I get tested for HIV?There are many places that provide HIV testing.Some of the most common places are local health departments ，AIDS service organizations ，free health clinics，private doctors，and hospitals.For more information on where to find a local HIV testing site：Use the HIV service locator.Visit HIVtest.org.Call 1800CDCINFO.Send a text message to “KNOWIT” (566948) with your ZIP code as the message.Within seconds you will receive a text message listing HIV testing sites near you.I think I might have been exposed to HIV.How long should I wait to get tested?It can take a while for your immune system to produce enough HIV antibodies for a test to detect them.Most people will develop detectable antibodies within 2 to 8 weeks (the aver...