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
Common cold is a viral infection that starts in the upper respiratory tract, sometimes spreads to the lower structures, and may
Common cold is a viral infection that starts in the upper respiratory tract, sometimes spreads to the lower structures, and may
admin
2013-06-03
72
问题
Common cold is a viral infection that starts in the upper respiratory tract, sometimes spreads to the lower structures, and may contribute secondary infections in the eyes or middle ears. The main differences between the common cold and other respiratory infections are the absence of fever and the relative mildness of the symptoms.
About 200 different strains of virus are capable of producing colds. Frequently two or more different viruses can be isolated during a single episode. The cold is spread by person-to-person contact. People can carry the virus and communicate it without themselves experiencing any of the symptoms. Incubation is short — usually one to four days. The viruses start spreading from an infected person before the symptoms appear, and the spread reaches its peak during the symptomatic phase. The incidence of colds peaks during the autumn, and minor epidemics commonly occur throughout the winter. The reason for this incidence is unknown; it may not stem mainly from stresses imposed by chilly weather but rather result from the greater amount of time spent indoors, which increases the likelihood of close contact with those persons carrying cold viruses.
Pathologic changes occurring in the mucous membrane that lines the nose, the nasal sinuses, the nasoharynx, and other upper respiratory passages may include tissue swelling, congestion of blood, and oozing of fluids. During the acute phase of the disease, the respiratory secretions are altered by increase in serum proteins. Parts of cells may also be found in the fluids. Tissue repair is rapid and seems complete, although a relationship might exist between colds and more serious respiratory conditions.
Cold symptoms vary from person to person, but in the individual the same symptoms tend to recur in succeeding bouts of infection. Manifestations may include sneezing, headaches, fatigue, chilling, sore throat, inflammation of the nose (rhinitis;, and nasal discharge. There is usually no fever. The symptoms usually last for only a few days. The nasal discharge is the first warning. The secretions become watery, clear, and excessive. Later, they thicken, increase in mucus and pus content, and may colour a yellow-green, with traces of blood. Coughing can be dry or produce amounts of mucus. Other more serious diseases with similar general symptoms may be mistaken for a cold; some of these are tuberculosis, bronchitis, lung abscesses, and inflammation around the heart.
Treatment is, in most instances, directed toward allaying of symptoms, coupled with rest and adequate fluid intake. Occasionally antibiotics are given to prevent secondary infections.
According to this passage, common cold is
选项
A、a hereditary disease.
B、generally accompanied with mild fever.
C、a kind of popular respiratory infection.
D、caused by spending a lot of time outdoors in chilly weather.
答案
C
解析
根据第一段第一句“普通感冒从上呼吸道开始,是一种病毒性感染…”可知答案为[C]。根据第二段第三句“感冒通过人与人的接触而传播”可知,[A]“遗传疾病”表述不正确;由文中第四段第三句There is usually no fever(感冒一般没有发烧症状)可知[B]表述不正确;第二段倒数第一句中提到冬天感冒可能不是因为严寒的天气,而是由于大部分时间待在室内引起的,因此[D]表述不正确。
转载请注明原文地址:https://kaotiyun.com/show/sVQK777K
0
专业英语四级
相关试题推荐
Everyproductonthemarkethasavarietyofcostsbuiltintoitbeforeitiseverputupforsaletoacustomer.Therearecost
Somepeoplesaythatiftheholderofchopstickspushesthem______hisstomachtoeventhemupinsteadoftappingthemonthetab
Oneofthemostcriticalproblems【C1】_____blackandotherminorityAmericanstodayisthedifficultyofentering【C2】_____socie
Ascientistdoesnotacceptstatementswhicharenotbasedonthemostcompleteevidenceavailable.Instead,healwayschecks,s
Whatistheconversationmainlyabout?
Thegovernmentwillgivethevictimswhosehousesaredamaged______torebuildtheirhomes.
Icanthinkofnobettercareerforayoungnovelistthantoforsomeyearsasub-editoronaratherconservativenewspaper.The
EversinceAesop,fantasyhasplayedanimportantroleinchildren’sliterature.Threenewbookscontinuethetraditionofencha
Thegovernmenttriedto______thebookbecauseoftheinformationitcontainedaboutthesecurityservices.
Thedeclineinmoralstandards—whichhaslongconcernedsocialanalysts—hasatlastcapturedtheattentionofaverageAmericans.
随机试题
患者,女性,50岁。患糖尿病10年,2年来采用胰岛素治疗。近日因上呼吸道感染后出现极度乏力、多尿、食欲缺乏、恶心、呕吐、呼吸深快。该患者可能是发生了
艾滋病健康教育的行为干预目标是
下列各项中,可以为合同债务人的债务腹行作保证人的是()。
在我国,法定有权追究行政责任的国家机关包括()。
施工阶段质量控制目标中,通过全过程、全面的施工质量自控,保证最终交付满足施工合同及设计文件所规定质量标准(含建设工程质量创优要求)的建设工程产品属于()质量控制的目标。
下列不属于建设项目信息的管理类信息的是()。
下列各项中,关于会计档案查阅和复制的说法正确的有()。
掌握若干概念之间关系的学习称为()
在现代化管理中,信息论己成为与系统论、控制论等相并列的现代科学主要方法论之一。信息具有多种基本属性,其中(35)________________是信息的中心价值;(36)________________决定了需要正确滤去不重要的信息、失真的信息,抽象出有用
在配置OSPF路由协议时,命令routerospf190中,最后的数字“190’’位置可表达的最大值为——。
最新回复
(
0
)