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　　Two life­saving① medicines

　　This article will focus on② two drugs that started revolutions③ in medicine④.If you open up⑤ any medicine cupboard⑥ or go to any medicine counter⑦ in the world, it is likely that⑧ you will find aspirin⑨ and penicillin⑩.Both of these medicines have saved millions of people's lives⑪ and have proved beneficial⑫ to mankind since they were invented.

　　Aspirin

　　Aspirin was invented in 1897.However, the basic chemical used to make aspirin⑬ can be found in nature.Nearly 3,500 years ago, people chewed⑭ on leaves or drank a kind of tea made from leaves⑮ possessing⑯ a special chemical⑰ to reduce body pains and fever.About 2,500 years ago, the Greek⑱ physician⑲ Hippocrates, father of all doctors, made a juice from a tree bark containing ⑳salicylic acid\s\up1(21(21)for the same effect\s\up1(22(22). It was in 1897 that\s\up1(23(23) a European chemist called Dr Felix Hoffmann produced aspirin from this chemical.The first trials\s\up1(24(24) of this medicine took place\s\up1(25(25) in 1899, when the company Hoffmann worked for began distributing the medicine in powder form\s\up1(26(26) to physicians to use with patients. A year later, in 1900, aspirin was sold in shops in the form of tablets\s\up1(27(27).Within a short time, aspirin became the best­selling\s\up1(28(28) medicine in the world for pain relief. ①life­saving/'laIfseIvIŋ/adj.救命的，救生的

②focus on/upon集中(注意力、精力)于

③revolution/ˌrevə'luːʃn/n.巨变，大变革；革命；旋转，天体运行

④that引导定语从句，修饰two drugs。

⑤open up打开　

⑥cupboard/'kʌbəd/n.橱柜；食物柜；衣柜

⑦counter/'kaʊntə(r)/n.柜台；计数器；反驳 vt.反驳；抵制，抵消

⑧it is likely that可能......　

⑨aspirin/'æsprIn/n.阿司匹林

⑩penicillin/ˌpenI'sIlIn/n.盘尼西林，青霉素

⑪save one's life救某人的命

⑫beneficial/ˌbenI'fIʃl/adj.有益的，有用的

be beneficial to对......有用

⑬过去分词短语作后置定语，修饰chemical。

⑭chew/tʃuː/vi.&vt.咀嚼，嚼碎；咬，啃

⑮过去分词短语作tea的后置定语。

⑯possess/pə'zes/vt.拥有，具有

⑰现在分词短语作leaves的后置定语。

⑱Greek n．希腊人adj.希腊的；希腊语的

⑲physician n．医师；内科医师　surgeon n．外科医生

⑳salicylic acid/ˌsælIˌsIlIk'æsId/n.水杨酸

\s\up1(21(21)acid/'æsId/n.酸，酸性物质adj.酸的，酸性的；酸味的；尖酸的

\s\up1(22(22)现在分词短语作a tree bark的后置定语。

\s\up1(23(23)It was ... that ...是强调句型，在此强调时间状语in 1897。

\s\up1(24(24)trial试验，试用　

\s\up1(25(25)take place发生(无被动语态)

\s\up1(26(26)in ... form/in the form of ...以......形式

\s\up1(27(27)tablet/'tæblət/n.药片；丸

\s\up1(28(28)best­selling/ˌbest'selIŋ/adj.畅销的