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 1 If a super-flu strikes, face masks may not protect you. Whether widespread use o
Face Masks May Not Protect from Super-flu 1 If a super-flu strikes, face masks may not protect you. Whether widespread use o
admin
2013-11-20
20
问题
Face Masks May Not Protect from Super-flu
1 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 in certain situations anyway, just in case.
2 But it’ s a question the public keeps asking while the governments are making preparations for the next flu pandemic. So the Centers for Disease Control and Prevention(CDC)came up with(提出)preliminary guidelines(初步指导方针). "We don’t want people wearing them everywhere, " said the CDC. "The overall recommendation really is to avoid exposure.
3 When that’ s not possible, the guidelines say to 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.
4 Influenza pandemic can strike when the easy-to-mutate flu virus shifts to a strain 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.
5 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(含有病毒的、充满细菌的)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 an ill-fitting mask and hop on the subway instead.
6 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 germy hands on your nose or mouth, you’ ve been exposed. It’ s harder to rub your nose while wearing a mask and 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.
7 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.
A. Reasons for Excluding Masks From the Self-protection List
B. Effort to Stop Flu From Spreading
C. When to Use Face Masks
D. Guideline on Mask Use
E. Warnings From the CDC
F. Danger of Infection Through Germy Hands and Masks
Paragraph 2______
选项
答案
D
解析
第二段说美国疾病控制和预防中心出台口罩使用原则,防止公众过度使用口罩。选项D是正确答案。
转载请注明原文地址:https://kaotiyun.com/show/x4Qd777K
本试题收录于:
职称英语理工类B级题库职称英语分类
0
职称英语理工类B级
职称英语
相关试题推荐
ElectromagneticEnergy1.Whitelightseemstobeacombinationofallcolors.Theenergythatcomesfromasourceoflight
Single-parentKidsDoBestSinglemumsarebetteratraisingtheirkidsthantwoparents—atleastinthebirdworld.Mother
AdaptationofLivingThingsCertainanimalsandplantsdevelopcharacteristicsthathelpthemcopewiththeirenvironmentbe
FactsaboutStroke1Every45seconds,someoneinAmericahasastroke.Every3.1minutes,someonediesofone.Strokekilled
Twoeventshavehighlightedthetensionsinrecentyears.
ASignificanceofTestingTechniquesforSamplingMicrobesintheDeepleeSheetBSpecialFeaturesofLakeVidaCLaterExpe
WhatisCold?Howcoldiscold?Italldependsonwhoistalking.Tousordinarypeoplenothingintheworldmaybesocoldasfa
ThegoldmedalwonbytwoChinesegirlsinthewomen’sdoublesoftennisisofgreatsignificance.
A.differentlabelsB.windowandglassdoorsC.inlandfloodingD.earlywarningE.naturaldisasterF.aconstantspeedApow
ObesityCausesGlobalWarmingThelistofillsattributabletoobesitykeepsgrowing:Eastweek,obesepeoplewereaccusedo
随机试题
铣削尖齿形离合器,分度头主轴必须仰起一个角度α,其中cosα=tan(90°/z)cot(θ/2)。
化学工艺按原料的不同来分类不包括()。
Ithinkyoursisterisoldenoughtoknow______tospendallhermoneyonfancygoods.
下列哪项对蜘蛛痣有诊断意义
对石灰稳定土底基层裂缝病害防治有利的做法有()。
简述小学生的基本认知能力发展特点。
被估地块剩余使用年限为30年,参照物剩余使用年限为25年,假定折现率为8%,被估地块的年限修正系数最接近于()。
Fromthefirstparagraph,wecanseethatVerizon’sannouncementofpricecuts______.Itcanbeinferredfromthetextthatth
Americansaregettingreadyforthebiggestsoccereventintheworld.Forthefirsttimetheworldcupsoccercompetitionwill
About"WhoisJohnFitzgeraldKennedy?",whichofthefollowingsatementsisNOTtrue?Accordingtothepassage,"assassinate"
最新回复
(
0
)