Unit 2 Fit for life课件13（牛津高中选修7）.ppt

Phrases ……有极大的可能性 拯救数百万人的生命 医学史家 推荐引用一种由特殊植物的干叶制成的汤药来退烧和减轻疼痛 用一种由树皮制成的汤药来退烧和减轻疼痛 对于这种药的第一次实验 将该药以粉末形式提供给医师，让他们用于病人 一片含有500毫克乙酰水杨酸 Phrases 以标准片剂出售 最畅销的止痛药 发表了好几篇报告的作者 稀释血液，从而减少心脏病发作的几率 被忽略 一种能稀释血液的药物 实行一项研究 Language practice prevent a stroke increase the length of people’s lives help people with diabetes increase the standard of people’s health this bacteria-killing medicine in contemporary society help in treating wounds and illnesses caused by bacteria name the chemical found in the mould ‘penicillin’ make it pure to be a medicine Language practice use new chemical techniques to purify it produce it in large quantities mass production due to the widespread use of penicillin die from bacterial illnesses or even minor wounds turn penicillin into the great drug Language practice Language practice Language practice Language practice Language practice Language practice Language practice Language practice Language practice Language practice Language practice Language practice Language practice Language practice Language practice Understanding the language Understanding the language In this lesson, you will … try to understand the language as well as practicing the key structures and special difficulties John Anderson March 4, 2011 Unit 2 Fit for lifeWelcome to the unit Reading John Anderson March 4, 2011 Understanding the language Lawrence Craven is a doctor from the USA. Lawrence Craven is the a______ of several published reports. One of the published reports introduced the idea in 1953. The idea is that aspirin could r______ the risk of heart attacks by thinning blood. educe uthor Understanding the language War and disease are the two main causes of t______ population. hinning Understanding the language In 1977, a study ____ ____ ____ (= was conducted) in the USA. The study showed that the chemical ASA in aspirin could prevent a s______. In 1977, a study carried out in the USA showed that the chemical ASA in aspirin could prevent stroke. was carri