首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Discovered in the early 1800s and named ’ nicotianine’ , the oily essence now called nicotine is the main active ingredient of t
Discovered in the early 1800s and named ’ nicotianine’ , the oily essence now called nicotine is the main active ingredient of t
admin
2017-05-11
30
问题
Discovered in the early 1800s and named ’ nicotianine’ , the oily essence now called nicotine is the main active ingredient of tobacco. Nicotine, however, is only a small component of cigarette smoke, which contains more than 4, 700 chemical compounds, including 43 cancer causing substances. In recent times, scientific research has been providing evidence that years of cigarette smoking vastly increases the risk of developing fatal medical conditions.
In addition to being responsible for more than 85 per cent of lung cancers, smoking is associated with cancers of, amongst others, the mouth, stomach and kidneys, and is thought to cause about 14 per cent of leukemia and cervical cancers. In 1990, smoking caused more than 84,000 deaths, mainly resulting from such problems as pneumonia, bronchitis and influenza. Smoking, it is believed, is responsible for 30 per cent of all deaths from cancer and clearly represents the most important preventable cause of cancer in countries like the United States today.
Passive smoking, the breathing in of the side-stream smoke from the burning of tobacco between puffs or of the smoke exhaled by a smoker, also causes a serious health risk. A report published in 1992 by the US Environmental Protection Agency(EPA)emphasized the health dangers, especially from side-stream smoke. This type of smoke contains more, smaller particles and is therefore more likely to be deposited deep in the lungs. On the basis of this report, the EPA has classified environmental tobacco smoke in the highest risk category for causing cancer.
As an illustration of the health risks, in the case of a married couple where one partner is a smoker and one a nonsmoker, the latter is believed to have a 30 per cent higher risk of death from heart disease because of passive smoking. The risk of lung cancer also increases over the years of exposure and the figure jumps to 80 per cent if the spouse has been smoking four packs a day for 20 years. It has been calculated that 17 per cent of cases of lung cancer can be attributed to high levels of exposure to secondhand tobacco smoke during childhood and adolescence.
It can be inferred from the passage that______.
选项
A、we can reduce deaths from cancer by 30% if no one smokes in the world
B、we can reduce deaths from lung cancer by 85% if no one smokes in the world
C、a non-smoker can reduce the risk of death from heart disease by 30% if he or she is able to avoid passive smoking
D、all of above
答案
D
解析
推理题,实际是反向的细节判断题。用数字回到原文定位到第二段最后一句(A选项)、第一段最后一句(B选项)、最后一段第一句(C选项)事实描述都是正确的。
转载请注明原文地址:https://kaotiyun.com/show/B3FO777K
0
考博英语
相关试题推荐
Theearthiswitnessinganurbanrevolution,aspeopleworldwidecrowdintotownsandcities.In1800onlyfivepercentofthew
Certainlypeopledonotseemlessinterestedinsuccessandwhatitcandoforusnowthanformerly.Summerhomes,Europeanvacat
WhenaScottishresearchteamstartledtheworldbyrevealingthreemonthsagothatithadclonedanadultsheep,PresidentClin
WhenaScottishresearchteamstartledtheworldbyrevealingthreemonthsagothatithadclonedanadultsheep,PresidentClin
ThismonthSingaporepassedabillthatwouldgivelegalteethtothemoralobligationtosupportone’sparents.CalledtheMai
A、fortunatelyB、franklyC、accordinglyD、apparentlyD四个选项的意思是:A项fortunately“幸运地”;B项frankly“坦白地”;C项accordingly“相应地,因此”;D项apparentl
ThegravitationalpulloftheEarthandmoonisimportanttousasweattempttoconquermoreandmoreofouter-space.Here’swh
Theconceptofpersonalchoiceinrelationtohealthbehaviorsisanimportantone.Anestimated90percentofallillnessesmay
Wecannotbe_____withhimduetohismisbehavioratthemeetingyesterday.
TheearlyretirementofexperiencedworkersisseriouslyharmingtheU.S.economy,accordingtoanewreportfromtheHudsonIn
随机试题
下列各项中,某行业()的出现一般表明该行业进入了衰退期。Ⅰ.产品价格不断下降Ⅱ.公司经营风险加大Ⅲ.公司的利润减少并出现亏损Ⅳ.公司数量不断减少
病毒感染的炎症病变中,以()渗出为主。
粉体喷射搅拌桩施工的要求有()。
委托手续费是投资者在办理委托买卖时,向()缴纳的手续费。
课堂导入方式多种多样。教师在上课时,运用学生在生活中熟悉或关心的事例导入新课,能使学生产生一种亲切感,也可以介绍新颖醒目的事例,为学生创设引人入胜、新奇的学习情境。
继“微博”之后,“微信”逐渐成为政府与群众沟通交流的新平台,人们亲切地称之为“指尖上的政民对话”。政务微信的开通()。
某矿山发生了一起严重的安全事故。关于事故原因,甲、乙、丙、丁四位负责人有如下断定:甲:如果造成事故的直接原因是设备故障,那么肯定有人违反操作规程。乙:确实有人违反操作规程,但造成事故的直接原因不是设备故障。丙:造成事故的直接原因确实是设备故障,但并没有人违
圆(x-1)2+(y-1)2=4上到直线x+y-2=0的距离等于2的点的个数为().
Supposeyourgraduationthesisisawardedasanexcellentone,writeanemailtoyourthesissupervisortoexpressyourapprecia
在考生文件夹下创建一个下拉式菜单mymenu.mnx,并生成菜单程序mymenu.mpr。运行该菜单程序时会在当前VisualFoxPro系统菜单的末尾追加一个“考试”子菜单,包括“计算和考试”两条菜单,如下图所示。“计算”和“返回”菜单命令
最新回复
(
0
)