[单项选择]

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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 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. 查看答案 更多"{{B}}TEXT B{{/B}} Commo"的相关试题: [单项选择] {{B}}TEXT B{{/B}} 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 A. the causes B. the definition C. the incubation D. the spreading 查看答案 [单项选择]{{B}}第二篇{{/B}} Common-cold Sense You can’t beat it, but you don’t have to join it. Maybe it got the name "common cold" because it’s more common in winter. The fact is, though, being cold doesn’t have anything to do with getting one. Colds are caused by the spread of rhinoviruses，and, at least so far, medical science is better at telling you how to avoid getting one than how to get rid of one. Children are the most common way cold viruses are spread to adults, because they have more colds than adults--an average of about eight per year. Why do kids seem so much more easily to get colds than their parents Simple. They haven’t had the opportunity to become immune to many cold viruses. There are more than 150 different cold viruses, and you never have the same one twice. Being infected by one A. the weather is too cold B. the spread of rhinoviruses gets people infected C. another person’s coughing passes the cold to you D. you wash your hands too often 查看答案 [单项选择] Common-cold Sense You can’t beat it, but you don’t have to join it. Maybe it got the name "common cold" because it’s more common in winter. The fact is, though, being cold doesn’t have anything to do with getting one. Colds are caused by the spread of rhinoviruses, and, at least so far, medical science is better at telling you how to avoid getting one than how to get rid of one. Children are the most common way cold viruses are spread to adults, because they have more colds than adults-an average of about eight per year. Why do kids seem so much more easily to get colds than their parents Simple. They haven’t had the opportunity to become immune to many cold viruses. There are more than 150 different cold viruses, and you never have the same one twice. Being infected by one makes you immune to it-but only it. Colds are usually spread by direct contact, not sneezing or coughing. From another person’s hand to your ha A. it is caused by the cold winter weather B. the spread of rhinoviruses gets people infected C. because another person’s coughing passes the cold to you D. because you wash your hands too often 查看答案 我来回答: 提交 最新试题 ●    [判断题]保兑信用证项下,开证行不必承担第一性付款责任。( ) ●    [单选题]下列关于消防员隔热防护服的维护保养要求,错误的是( )。 ●    [单选题] 《建筑法》(草案)经全国人大八届常委会第28次会议审议,于( )正式颁布。 ●    关于甲状腺的功能检查，叙述错误的有（） ●    [单选题]特种设备安全管理机构的主要（ ）是指特种设备使用单位的实际最高管理者。 ●    [单选题]下列各种结构中，哪一种不是沉积岩的结构？ 网站地图 我要搜题网  版权所有  ©2024  湘ICP备18016427号   购买搜题卡查看答案 [会员特权] 开通VIP， 查看 全部题目答案 [会员特权] 享免全部广告特权 推荐91天 ¥36.8 ￥80元 31天 ¥20.8 ￥40元 365天 ¥88.8 ￥188元 请选择支付方式 微信支付 支付宝支付 点击支付即表示同意并接受了《购买须知》 立即支付 系统将自动为您注册账号 已有账号登录 找回账号密码 请使用微信扫码支付 订单号： 截图扫码使用小程序[完全免费查看答案] 前往小程序 请不要关闭本页面，支付完成后请点击【支付完成】按钮 支付完成 取消支付 恭喜您，购买搜题卡成功 系统为您生成的账号密码如下： 账号 密码 重要提示：请拍照或截图保存账号密码！ 我要搜题网官网：https://www.woyaosouti.com 我已记住账号密码