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
Face Masks May Not Protect from Super-Flu If a super-flu strikes, face masks may not protect you. Whether widespread use of
Face Masks May Not Protect from Super-Flu If a super-flu strikes, face masks may not protect you. Whether widespread use of
admin
2015-06-19
65
问题
Face Masks May Not Protect from Super-Flu
If a super-flu strikes, face masks may not protect you. Whether widespread use of masks will help, or harm during the next worldwide flu outbreak is a question that researchers are studying furiously. No results have come from their mask research yet. However, the government says people should consider wearing them certain situations anyway, just in case.
But it’s a question the public keeps asking while the government is making preparations for the next flu pandemic (大流行).So the Centers for Disease Control and Prevention ( CDC) came up with preliminary guidelines."We don’t want people wearing them everywhere," said the CDC. "The overall recommendation really is to avoid exposure. "
When that is not possible, the guidelines say you should consider wearing a simple surgical mask if you are in one of the three following situations. First, you’re healthy and can’t avoid going to a crowded place. Second, you’re sick and think you may have close contact with the healthy, such as a family member checking on you. Third, you live with someone who’s sick and thus might be in the early stages of infection, but still need to go out.
Influenza pandemics can strike when the easy-to-mutate (变异) virus shifts to a strain(菌株)that people never have experienced. Scientists cannot predict when the next pandemic will arrive , although concern is rising that the Asian bird flu might trigger one if it starts spreading easily from person to person.
During the flu pandemic, you should protect yourself. Avoid crowds, and avoid close contact with the sick unless you must care for someone. Why aren’t masks added to this self-protection list? Because they can help trap virus-laden droplets flying through the air with a cough or sneeze. Simple surgical masks only filter the larger droplets. Besides, the CDC is afraid masks may create a false sense of security. Perhaps someone who should have stayed home would don(戴)an ill-fitting mask and hop on the subway instead.
Nor does flu only spread through the air. Say someone covers a sneeze with his or her hand,then touches a doorknob or subway pole. If you touch that spot next and then put genny hands on your nose or mouth, you’ve been exposed. It’s harder to rub your nose while wearing a mask, so your face may get pretty sweaty under masks. You reach under to wipe that sweat, and may transfer germs caught on the outside of the mask straight to the nose. These are the problems face masks may create for their users.
Whether people should or should not use face masks still remains a question. The general public has to wait patiently for the results of the mask research scientists are still doing.
The word " that" in Paragraph 3 refers to______.
选项
A、making preparations
B、avoiding exposure
C、coming up with guidelines
D、wearing face masks everywhere
答案
B
解析
根据文章第二段“The overall recommendation really is to avoid exposure.”可知,美国疾病控制和预防中心建议真正能为下一次流感大爆发做的准备是“avoid exposure”,而第三段中的that正是指美国疾病控制和预防中心的建议“avoid exposure”。
转载请注明原文地址:https://kaotiyun.com/show/eIGd777K
本试题收录于:
职称英语理工类A级题库职称英语分类
0
职称英语理工类A级
职称英语
相关试题推荐
HairDetectivesScientistshavefoundawaytousehairtofigureoutwhereapersonisfromandwherethatpersonhasbeen.The
ManandComputerWhatmakespeopledifferentfromcomputerprograms?Whatisthemissingelementthatourtheoriesdon’tyet(51)
MeterorologyThescienceofmeteorology(气象学)isconcernedwiththestudyofthestructure,state,andbehavioroftheatmospher
Itiseasytodeterminewhethersmokingishazardous.Malesmokershavealowerdeathratefromheartdiseasethanfemalesmoke
ViennaViennawasoneofthemusiccentersofEuropeduringtheclassicalperiod,andHaydn,Mozart,andBeethovenwereall
MysteriousNazcaDrawingsOneofthemostmysteriousarchaeologicalspectaclesintheworldistheimmensecomplexofgeome
MobilePhoneandDiseasesAstudybyscientistsinFinlandhasfoundthatmobilephoneradiationcancausechangesinhuman
AAShortHistoryofNamingHurricanesBHarnessingtheHurricaneEnergyCDifficultyinForecastingtheCourseofaHurric
A.milk,meat,vegetables,etc.weredeliveredB.ithaspromotedthesalesofmanykindsofcommoditiesC.foodscanbe
Throughoutmostoftheirlives,humanbeingsperpetuallylearnandincreasetheirmentalcapacities.
随机试题
A.清心安神B.潜阳安神C.补气安神D.解郁安神E.养血安神首乌藤的功效是()
男性,40岁。因两上肢无力伴肌萎缩、肉跳1年就诊。无感觉障碍、尿失禁。体检:两侧肩部肌力V度,肘关节肌力V度,腕关节肌力Ⅳ度,对掌肌及骨间肌力Ⅱ~Ⅲ度,双上肢肌张力略增高,双侧肱二头肌、肱三头肌反射(+++),右侧霍夫曼征阳性;左侧巴氏征阳性;双侧大小鱼际
产蛋鸭群,病初采食量下降,部分鸭排草绿色稀便,1周后产蛋量锐减70%,同时出现砂壳蛋、畸形蛋。剖检见卵泡膜充血出血,肝脏肿大有坏死灶。该病的病原分类属于()
治疗湿热腰痛,宜选
某省国家重点扶持项目电力公司Z欲建一火力发电厂,发电厂占地面积2300亩。其中需占用基本农田850亩,基本农田外的耕地680亩,其他土地770亩。该块用地涉及X县两个行政村A与B。A村被占基本农田400亩,基本农田以外的耕地270亩,其他土地280亩;B
it电质灾害危险性评估工作结束后()年,工程建设仍未进行,应重新进行地质灾害危险性评估工作。
战国时期各国法制的指导思想包括()
GeneralMotorsCo.’srecentstockofferingwasstagedtostartpayingbackthegovernmentforits$50billionbailout,butone
在窗体上画一个名称为Command1的命令按钮,编写如下事件过程:PrivateSubCommand1_Click() n=0 Fori=0To10 X=2*i-1 IfXMod3=0Thenn=n+1
FiresthroughtheIndonesiancountrysideareduetoanaturalphenomenon.
最新回复
(
0
)