2001年醫學博士英語作文 4=~ 9v
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Writing Drill Smoking and Health *1\z^4=a]
It is not until recently that smoking has been firmly proved to be hazardous to health. It irritates the throat and respiratory passages. It sometimes leads to poor appetite, nausea, short breath, and irregular heartbeat. More importantly, smoking is associated with chronic and fatal diseases of respiratory tract. Evidence shows that smokers are more likely than nonsmokers to develop cancer of the lungs, throat, tongue, and jaw, emphysema and bronchitis as well. As a result, many nations have made enormous efforts to warn people of the dangers of smoking. <V7SSm
While smoking, particles of tobacco tar and smoke slow down the work of cilia. The tar collected in the lungs can cause cancer. Moreover, nicotine in tobacco can be simulating by affecting various centers on the medulla oblongata region of the brain. It can affect other physiological process that in turn affect the respiratory center in the brain. It can also influence other centers that slow down the action of the heart, constrict the arteries, and cause vomiting. #-}kG"
In brief, smoking does nothing but harm to people’s health. Therefore, smokers of any age or kind should try to give it up. x(rd$oZO
這篇短文的主旨是說明吸煙對健康危害及造成危害的原因,通讀全文,根據其要點可以分為四個部分:1)吸煙有害;2)吸煙有哪些具體的害處;3)為什么吸煙會有害,亦即其致害機理是什么;4)總結:吸煙有害要戒煙。 txj wZ_p
總之,摘要寫作時切忌“見木不見林”,要體現出層次感,結構要明快,這樣可以向閱卷老師表明你的邏輯。