2010年职称英语理工类B级补全短文考点精华(3)职称英语考试

文章作者 100test 发表时间 2009:08:09 16:34:37
来源 100Test.Com百考试题网


div id="tijs" class="kkx">  阅读下面的短文,文章中有5处空白,文章后面有6组文字,请根据文章的内容选择5组文字,将其分别放回文章原有位置,以恢复文章原貌。请将答案涂在答题卡相应的位置上。
  TheSpread of Microorganisms
  There is scarcely a place on earth which isnaturally free of microorganisms (微生物). 46 . But on external body surfaces, onlining membranes(内膜) and inside tubes and organs that are connected with theoutside—such as the mouth, throat, nose, and large intestine(肠)—bothharmless and pathogenic(病原的)microbes(微生物)live in large numbers. 47 . If thesenatural defenses are sound, a person may conceal many microbes without illeffect. However, if his resistance becomes lowered, an infection can result.
  Microbes are spread about through an almost infinite variety of means. 48. The more crowded the conditions, the greater the chances of epidemics(流行病)breaking out. 49 . 来源:
  Although microbes cannot fly, the dust of the air isalive with them. In close quarters the atmosphere is further polluted bybacteria-loaded tiny 0drops discharged by coughing and even normal conversation.Pathogenic microbes are also spread by rats, mice, flies and mosquitoes. 50 . Inslum areas there is often a combination of crowded conditions and poorsanitation(环境卫生). In addition, many of the inhabitants have lowered resistancebecause of shortage of food and other undesirable unhealthy practices. As aresult, epidemics are likely to begin in these districts.
  All civilizedsocieties establish and enforce measures designed to protect the health of theirpopulations. Most of these practices are concerned with preventing the spread ofthe pathogenic organisms
  A The atmosphere is a carrier ofmicroorganisms来源:考的美女编辑们
  B One exception is the interior of normal bodytissue
  C Microbial growth is further helped by the widespread presence ofdirt and the lack of sunlight
  D The body has natural defenses againstthese organisms
  E The body has no defenses against these organisms
  FThe simplest way is by person-to-person contact
  

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