中石油职称英语课文讲稿1-60第01课(18)

19. Smoking and Cancer. 吸烟和癌.

作为阅读文章

1. Americans smoke six thousand million cigarettes[(cigarette):n.纸烟；香烟] every year (1970 figures[数字]). This is roughly[(rough):adj.错略的] the equivalent[相等的] of 4,195 cigarettes a year for every person in the country of 18 years of age or more. It is estimated[(estimate):v.估计] that 51% of American men smoke compared[(compare):vt.比较] with 34% of American women.

1、美国人每年抽烟60亿支(1970年的统计数字)。这大致等于每个18岁以上的人一年要吸4195支烟。据估计，美国有51％的男性吸烟，而女性吸烟的比例则为34％。

分析：compared with:与……比较；

单词：cigarette =香烟；figure =统计数字；roughly =.概略地；equivalent=相等的；estimate=估计；compare=比较；

2. Since 1939, numerous[adj.许多的] scientific studies have been conducted[(conduct):vt.进行] to determine[确定] whether smoking is a health hazard[n.危险]. The trend[n.趋向,趋势] of the evidence[n.证据] has been consistent[adj.一致的,符合的] and indicates[(indicate):v.表明，暗示] that there is a serious health risk[n.危险]. Research teams have conducted studies that show beyond all reasonable[adj.合情理的] doubt[n. vi.&vt.怀疑；疑惑] that tobacco[n.烟草；烟叶] smoking, particularly[(particular):adj.特殊的；特别的] cigarette smoking, is associated[(associate):v.使联系起来] with shortened life expectancy[n.预料,预计,期待].

2、1939年以来，为了确定抽烟是否有害健康进行了大量的科学研究。证据所显示的趋势是一贯的，并表明对人体的健康有严重的危险。许多研究小组进行的研究不容置疑地表明，吸食烟草，特别是吸卷烟与预期寿命缩短有关。

分析：have been conducted ：完成时态的被动语态。；life expectancy ＝平均寿命；indicate=指出，暗示；（出现在阅读的题干中）

单词：numerous =许多的；conduct=进行；determine =确定；hazard ＝危险；trend =趋势；evidence=证据；consistent =一致的；doubt=怀疑；reasonable=有道理的；tobacco =烟草；particularly =特别是；cigarette =卷烟；；shorten =缩短；expectancy =预期；

3. Cigarette smoking is believed by most research workers in this field to be an important factor[n.因素] in the development of cancer of the lungs and cancer of the throat and is believed to be related[(relate):vi.有关；涉及] to cancer of the bladder[n.膀胱] and the oral cavity[n.腔]. Male cigarette Smokers have a higher death rate from heart disease than non-smoking males. (Female smokers are thought to be less affected because they do not breathe[呼吸] in the smoke so deeply.) The majority[n.大多数] of doctors and researchers consider these relationships proved to their satisfaction[n.满意] and say, "Give up smoking. If you don't smoke-don't start!"

3、这方面的研究人员大都相信吸卷烟是产生肺癌、喉癌的重要因素，还认为膀胱癌、口腔癌也与此有关。男性吸烟者的心脏病死亡率比不吸烟的高。(他们认为女性吸烟者受影响小一些，因为她们吸烟不那么深。)大多数医生和研究人员认为，上述那些关系已得到令人满意的证实，并且告诫说：“戒烟吧，如果你不会抽-那可不要学!”

分析：development：事物从无到有的一个发展过程；majority根据后面接的名词来决定谓语的形式；

单词：factor=因素；relate =有关系的；bladder=膀胱；oral cavity=口腔；male =男性；female =女性的；affect =影响；breathe=呼吸；majority=多数；consider =认为；satisfaction =满

意；Give up=放弃；

4. Some competent[adj.有能力的] physicians[(physician):n.医生,(尤指)内科医生] and research workers-though their small number is decreased[(decrease):v.减少] even further-are less sure of the effect of cigarette smoking on health. They consider the increase in respiratory[a.呼吸的] diseases and various[adj.各种各样的] forms of cancer may possibly be explained by other factors[(factor):n.因素] in the complex[adj.;复杂的] human environment-atmospheric pollution, increased nervous stress[n.压力,紧张], chemical substances[(substance):n.物质] in processed[(process):n.加工] food, or chemical pesticides[(pesticide):n.杀虫剂] that are now being used by farmers in vast[adj.巨大的；广阔的] quantities[(quantity):n.量；数量] to destroy insects[(insect):n.昆虫] and small animals. Smokers who develop cancer or lung diseases, they say, may also, by coincidence[n.巧合], live in industrial[adj.工业的] areas, or eat more canned food. Gradually[adv.逐渐地], however, research is isolating[(isolate):v.使隔离,使孤立] all other possible factors[(factor):n.因素] and proving them to be statistically[adv.统计上的] irrelevant[adj.不相关的].

4、有些精通业务的医生和研究人员-虽然这些人不多，并且人数在进一步减少-不那么肯定吸卷烟对人体健康有影响。他们认为呼吸系统疾病和各种癌症的增多也许可以说是由于人类复杂环境中另外一些因素，即：空气的污染、人们精神压力的增大、经过加工的食品中的化学物质、或化学杀虫药引起的。农民现在大量使用这些农药杀死昆虫和小动物。据他们说，那些患了癌症或肺病的人可能恰巧也住在工业区，或是吃了更多的罐头食品。但是研究工作逐渐排除了其它因素的可能性，并且用统计数字证明这些因素是无关的。

分析：are being used ：现在进行时的被动语态；

process:加工；progress：进步；proceed：开始，进行；destroy :瞬间的，彻底的毁坏；pain疼痛；hurt 伤害（肉体的，精神上）；injure(容貌上的，肉体的，精神上)；harm（是一个长期的损害，）；damage（对事物的损害，无生命的）；

are sure of =确信；

单词：competent =有能力的；physician =医师；decrease =减少；consider =认为；increase =增加；respiratory=.呼吸的；various =各种各样的；atmospheric pollution ＝大气污染；nervous =神经紧张的；process=加工；pesticide =杀虫剂；quantity =数量；destroy=消灭；coincidence=巧合；isolate = 使孤立；statistically =统计上地；irrelevant =不相关的；

5. Apart from the scientific statistics[n.统计数字,统计资料], it might be helpful to look at what smoking tobacco[n.烟草；烟叶] actually[(actual):a.实际的，现实的] does to the human body. Smoke is a mixture of gases[(gas):n.气体], vaporized[(vaporize):v.(使)蒸发] chemicals, minute（极小的）particles[(particle):n.微粒] of ash[n.灰，灰末], and other solids[(solid):n.固体]. There is also nicotine[n.尼古丁], which is a powerful[adj.强大的] poison[n.毒药], and black tar[n.焦油]. As the smoke is breathed[(breathe):vi.呼] in, all these components[(component):n.组成部分] form deposits[(deposit):堆积，沉淀] on the membranes[(membrane):n.膜] of the lungs. One point of concentration[n.集中] is where the air tube, or bronchus[n.支气管], divides[(divide):划分]. Most lung cancer begins at this point.

5、除了科学统计之外，研究工作还有助于认清吸食烟草对人体的实际影响。抽烟产生的烟雾是一种混合的气体，包括气化的化学物质，极小的灰末微粒和其它固体，还有毒性很强的尼古丁和黑焦油。当吸进烟时，所有这些成分就都沉淀在肺膜上。在气管和支气管分支的地方有一个集中点。大部分肺癌就从这里发端。

分析：apart from＝除…之外；

单词：statistics =统计学；tobacco =烟草；actually =事实上；mixture =混合；gas＝气体；

vaporize= (使)蒸发；minute ＝微小的；particle =微粒；ash=灰；solid ＝固体；nicotine=尼古丁；poison=毒药；tar=焦油；component=成分；deposit=堆积；membrane =膜；concentration =集中；bronchus =支气管；

6. Smoking also affects the heart and blood vessels[(vessel):n.血管]. It is known to be related to Beurger's disease, a narrowing of the small veins[(vein):n.静脉] in the hands and feet that can cause great pain and lead even to amputation[n.截肢手术] of limbs[(limb):n.肢]. Smokers also die much more often from heart disease.

6、抽烟也影响心脏和血管。现已查明抽烟与伯尔格氏病有关。这种疾病使手脚的细静脉不断缩小，从而引起剧烈疼痛甚至会导致截肢。抽烟者死于心脏病的也比不吸烟的人多得多。分析：relate to =涉及；lead to＝导致；

单词：blood vessel=血管；disease ＝疾病；narrowing=缩小；vein = 静脉；amputation=切断手术；limb =肢；

7. While all tobacco[n.烟草；烟叶] smoking affects life and expectancy[n.预料,预计,期待] and health, cigarette[n.纸烟；香烟] smoking appears[(appear):vi.出现] to have a much greater effect than cigar[n.雪茄烟，叶卷烟] or pipe[n.烟斗] smoking. However, nicotine[n.尼古丁] consumption[n.消费;消耗量] is not diminished[(diminish):v.减少] by the latter[n.后者] forms, and current[adj.当前的;现今的] research indicates[(indicate):v.表明] a causal[adj.具有因果关系的] relationship between all forms of smoking and cancer of the mouth and throat. Filters[(filter):n.过滤嘴] and low tar[n.柏油,焦油] tobacco[n.烟草；烟叶] are claimed[(claim):v.声称] to make smoking to some extent[n.程度,范围] safer, but they can only marginally[(marginal):a.微小的] reduce[vt.减少；缩减], not eliminate[v.消除,排除] the hazards[(hazard):n.危险].

7、尽管吸食各种烟草都会影响预期寿命和健康，但是抽香烟的影响要比抽雪茄和抽烟斗大得多。不过，后两种并不能减少对尼古丁的吸食，当前的研究指出各式各样的吸烟都和口腔癌、喉癌有某种因果关系。据称过滤嘴香烟和低焦油烟草能使吸烟在某种程度上比较安全，但是这只能略微减少危害，而不能消除危害。

单词：while =尽管；appear＝看来；cigar =雪茄；pipe=烟斗；consumption =消费；diminish=减少；current=当前的；indicate =显示；causal=原因的；filter=过滤；tar =焦油；claim =声称；marginally=略微；eliminate =排除, 消除；