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
Many people who fly at least occasionally have come down with a cold or the flu shortly after disembarking. Is the air in airbor
Many people who fly at least occasionally have come down with a cold or the flu shortly after disembarking. Is the air in airbor
admin
2019-01-25
46
问题
Many people who fly at least occasionally have come down with a cold or the flu shortly after disembarking. Is the air in airborne commercial jets【C1】______? The Association of Flight Attendants (AFA),【C2】______which 42, 000 flight attendants with 7 airlines are represented, evidently thinks so. The organization claims that the incidence of air-quality-related diseases has【C3】______among its members and demands that prompt actions be【C4】______to improve the conditions in the airplane cabin.
A study the AFA【C5】______in 1997 uncovered about 1, 000 self-reported incidents of headaches, dizziness and memory loss【C6】______flight attendants and passengers. Some flight attendants were too ill to【C7】______their safety duties, while others have been permanently disabled.
Because of airlines’ efforts to【C8】______their expenses, cabin-air filters are not cleaned【C9】______. The complaints of flight attendants do not always give【C10】______to correct maintenance. Airlines turned to recycled air,【C11】______that they would reduce some of their costs. They are not required to put filters in. Airlines are【C12】______great pressure to get their flights out【C13】______. So they do not pay as much attention to systems that are not as【C14】______to flight schedule and safety.
Recent research findings emphasize the concern that filters can【C15】______engine chemicals into the cabin air. This may not happen【C16】______every flight, but it is a persistent problem.
In a study published in October 1998 an investigation was made【C17】______complaints of crew members【C18】______air quality and health. More than half of the 200 subjects reported health problems they【C19】______to cabin air. It was concluded that these health problems were consistent with【C20】______harmful gases and substances.
【C11】
选项
A、confided
B、promised
C、ensured
D、convinced
答案
D
解析
confide(向某人)吐露(隐私、秘密等);promise承诺;ensure确保;convince使确信。从语意上来看,可排除A;从句子结构上来看,这里是过去分词短语作原因状语,B项不符合;文中句子的意思是,航空公司诉诸可循环空气,因为他们确信(通过这种方式)可以降低部分成本,ensure常用于主动语态中,convince常用搭配为convince sb./yourself of sth.,如:I’d convince myself(that)I was right.故选D。
转载请注明原文地址:https://kaotiyun.com/show/N7Rd777K
本试题收录于:
公共英语四级笔试题库公共英语(PETS)分类
0
公共英语四级笔试
公共英语(PETS)
相关试题推荐
HowmanypeopleworldwidehavebeeninfectedwithHIVsincethestartoftheepidemic?
HowmanypeopleworldwidehavebeeninfectedwithHIVsincethestartoftheepidemic?
61)PeopleintheUnitedStatesinthenineteenthcenturywerehauntedbytheprospectthatUnprecedentedchangeinthenation’s
61)PeopleintheUnitedStatesinthenineteenthcenturywerehauntedbytheprospectthatUnprecedentedchangeinthenation’s
Inoneverylongsentence,theintroductiontotheU.N.Charterexpressestheidealsandthecommonaimsofallthepeoplewhose
Therehasbeenadiscussionrecentlyontheissueofchallengeinanewspaper.Somepeoplethinkchallengeisakindofimpetus,
Broadlyspeaking,theEnglishmanisaquiet,shy,reservedpersonwhoisfully【21】______onlyamongpeopleheknowswell.In
Broadlyspeaking,theEnglishmanisaquiet,shy,reservedpersonwhoisfully【21】______onlyamongpeopleheknowswell.In
Broadlyspeaking,theEnglishmanisaquiet,shy,reservedpersonwhoisfully【21】______onlyamongpeopleheknowswell.In
随机试题
科学发展观的根本方法是()
20世纪40年代的国统区重要的诗歌流派“七月诗派”是什么?
妊娠高血压征妇女使用硫酸镁解痉时,应停用药物的情况是
关于MEN的描述错误的是
慢性增殖型念珠菌病的临床特征为
A、毒性反应B、继发反应C、药物变态反应D、过度作用E、副作用氯霉素所致的骨髓抑制属于()。
依据我国法律规定,下列有关汇票与支票的相互区别的表述正确的是()
基金管理公司董事会中应当至少有()名独立董事。
《中共中央关于加强党的执政能力建设的决定》指出,要正确处理坚持公有制为主体和促进非公有制经济发展的关系,()。
From:DorothyFieldsTo:JohnEricssonSubject:DueDateDate:February20DearDr.Ericsson,Onceagain,Iwouldliketocon
最新回复
(
0
)