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
考研
It took decades to prove that cigarette smoking causes cancer, heart disease, and early death. It took【C1】______years to establi
It took decades to prove that cigarette smoking causes cancer, heart disease, and early death. It took【C1】______years to establi
admin
2017-08-11
23
问题
It took decades to prove that cigarette smoking causes cancer, heart disease, and early death. It took【C1】______years to establish that secondhand smoke also kills. Now scientists are worried about another cigarette-related phenomenon: thirdhand smoke. It’s real, and it’s found everywhere. Without knowing it, indoor smokers have left a toxic【C2】______that continues years after their last cigarette was extinguished.
Researchers now know that thirdhand smoke combines with some substances to create new compounds. Thirdhand smoke【C3】______and settles with dust,【C4】______down to carpeting and furniture【C5】______, and makes its way deep into the material in paneling and wall. It【C6】______in the hair, skin, clothing, and fingernails of smokers—【C7】______a mother who doesn’t smoke【C8】______her kids, smokes outside, then comes inside and holds the baby is exposing that child to thirdhand smoke. The new compounds are【C9】______to clean up, have a long life of their own, and many may cause cancer. And the contamination becomes more toxic【C10】______time.
No one knows, in this relatively new field of research, how long the compounds created by smoke and environmental pollutants last. "In homes where we know no smoker has lived for 20 years, we’ve still found【C11】______of these compounds in dust, in wallboard," says a scientist. But scientists do know that babies and children are most【C12】______to the toxic effects of thirdhand smoke. They【C13】______on rugs, fall asleep on carpets, and teethe on furniture, all of which could be【C14】______with thirdhand smoke.
Researchers aren’t just worried about the risk of cancer. Thirdhand smoke could be【C15】______other health problems. Those who move into houses or apartments【C16】______owned by smokers might be exposed as well. And thirdhand smoke is difficult to【C17】______. It’s virtually impossible to remove this stuff【C18】______you remove the flooring and wall.
Experts say much more work needs to be done on the【C19】______of the problem, the health risks, and effective ways to clean up the compounds. They advise parents not to expose their children to thirdhand smoke, not to【C20】______hotel rooms or cars used by smokers.
【C3】
选项
A、develops
B、mixes
C、covers
D、explodes
答案
B
解析
上一句提到三手烟会与其他物质结合(combines with some substances)。空格后的dust属于其中一种,故B项mixes“混合”正确,对应上句中的combines一词。
转载请注明原文地址:https://jikaoti.com/ti/STk7FFFM
0
考研英语一
相关试题推荐
Apairofdice,rolledagainandagain,willeventuallyproducetwosixes.Similarly,thevirusthatcausesinfluenzaisconstan
Forthefirsttime,morewomenthanmenintheUnitedStatesreceiveddoctoraldegreeslastyear,theclimaxofdecadesofchang
Forthefirsttime,morewomenthanmenintheUnitedStatesreceiveddoctoraldegreeslastyear,theclimaxofdecadesofchang
Forthefirsttime,morewomenthanmenintheUnitedStatesreceiveddoctoraldegreeslastyear,theclimaxofdecadesofchang
Forthefirsttime,morewomenthanmenintheUnitedStatesreceiveddoctoraldegreeslastyear,theclimaxofdecadesofchang
Forthefirsttime,morewomenthanmenintheUnitedStatesreceiveddoctoraldegreeslastyear,theclimaxofdecadesofchang
Forthefirsttime,morewomenthanmenintheUnitedStatesreceiveddoctoraldegreeslastyear,theclimaxofdecadesofchang
随机试题
设氮的一次节流液化系统的操作温度为290K和71.9K。假设氮气被等温可逆压缩到10.1MPa,其低压对应于液氮在71.9K的饱和蒸气压(0.05MPa)。如果换热器是理想的,系统没有漏热,该液化器的热力完善度是()。A.0.064B.0.06
如图所示,河道中有一圆柱形的桥墩,圆柱的直径d=1.0m,水深h=3.0m,河水的流速v=3.2m/s,则桥墩所受的绕流阻力R为()。
下图是一组不同成孔质量的预钻式旁压试验曲线。其中正常的旁压曲线为()。
根据《专利法》的规定,实用新型和外观设计专利权的期限为()年。
生存于复杂而相对确定环境中的组织,适宜选择()。
书话贵在体现作者独到的品书心得,不仅提供有关书的知识,而且也需研求学问,_______一己之见。即使是对事实、材料的陈述,也能见出作者辨析、取舍的_______。所以,书话中的高手,往往也就是学问上的大家。填入画横线部分最恰当的一项是:
头发:颜色:长度
A.lightsB.protectC.inthedarkA.sitathome【T7】________B.turnoffallnon-essential【T8】________C.passedalawto【T9】_
资本主义简单再生产,就其实质而言,是
将1m长的木棒截成两段,其中第一段的长度为X,第二段长度为Y,则X+2Y与3X+Y的相关系数为()
最新回复
(
0
)