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
44
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
61)PeopleintheUnitedStatesinthenineteenthcenturywerehauntedbytheprospectthatUnprecedentedchangeinthenation’s
Inoneverylongsentence,theintroductiontotheU.N.Charterexpressestheidealsandthecommonaimsofallthepeoplewhose
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
与儿童自我意识的真正出现相联系的是()
计算机网络最突出的优点是____________。
关于月经的临床表现,下述哪项错误
患者,男性,32岁。右侧上颌第一恒磨牙咬合疼痛l周,近2日自发性疼痛明显加重,感患牙伸长,无放射痛。口检下右6远中邻颌面树脂充填物完好,叩痛,牙齿Ⅰ度松动,牙龈(一),根尖区轻度压痛。对诊断最有帮助的一项检查是()
A、新药申请B、进口药品申请C、补充申请D、仿制药申请E、药品生产申请《药品注册管理办法》规定境外生产的药品在中国境内上市销售的注册申请是
某大型国有企业集团下设有几家子公司,该集团拟于2006年设立股份有限公司,以下为企业法律顾问提供的法律意见,正确的是()
以地(市)级行政区为单位开展初始地籍调查,地籍编号分为,四级,其中必须用阿拉伯数字表示的为()。
教师资格考试科目、标准大纲和考试大纲由()审定。
已知P(x,y)在函数的图象上,那么点P应在平面直角坐标系中的().
WhatcausedthehealthproblemstoworkersaftertheSeptembereleventhattacksaccordingtothispassage?Theresearchersdeci
最新回复
(
0
)