阅读理解 What do you do if you get hit in the mouth and one of your teeth

题文

阅读理解 What do you do if you get hit in the mouth and one of your teeth is knocked out? A dentist may beable to put the tooth back in for you, but you have to get to the dentist first. In the meantime, you haveto store the tooth so that it will stay healthy. The simplest thing to do is to put the tooth back into your mouth, or you could put it in milk. FrankCourts, a dentist at the University of Florida, worked with other rearchers to find the safest way of keeping knocked-out teeth. He tried putting teeth into milk, into water,  and into  cell-culture  medium(细胞培养液).  He also tried just drying the teeth in the open air. He ud teeth that had to be removed from people's mouths for vanous reasons. The teeth were put into one of the solutions(溶液) or stored in the air for one hour. Then cells from the root of the teeth were scraped off the teeth. Dr Courts and theothers then studied how healthy the cells were.The cell-culture medium worked best to keep a knocked-out tooth healthy outside the mouth.However, few people keep cell-culture medium handy at home or in school. The next best thing wasmilk. But Dr Courts said that the best thing of all was to wash the tooth and put it right back into its socket (牙槽) in the mouth. For some people, though, this is just too painful or uptting.  So milk will do, until you get your tooth( andyour mouth) to a dentist. 1. This passage is mainly about   . A. how a dentist can save a knocked-out tooth B. how to keep a knocked-out tooth healthyC. how Dr Courts and other rearchers made their experimentsD. how to put a knocked-out tooth back into its socket 2. Dr Courts tested __ . A. man-made teethB. teeth dried in the open airC. teeth pulled for various reasonsD. teeth put back in their sockets 3.The best way to keep a knocked-out tooth healthy outside the mouth is to store it   . A. in cell-culture mediumB. in milkC. in waterD. in the open air 4. Milk can be ud instead of cell-culture medium to put a knocked-out tooth in becau   . A. milk works better to keep the tooth healthyB. nulk caus less painC. cell-culture medium is not usually handyD. cell-culture medium is more expensive 题型：未知难度：其他题型

答案

1-4: BCAC

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据考高分专家说，试题“阅读理解 What .....”主要考查你对 [健康环保类阅读 ]考点的理解。 健康环保类阅读

健康环保累阅读概念：

健康环保类文章常是介绍科学知识、生活常识和环境保护方面的短文。体裁有记叙文、 说明文、议论文和各种应用文。

健康环保类文章阅读技巧：

   健康环保类文章常是介绍科学知识、生活常识和环境保护方面的短文。阅读此类短文要以现象或事物为中心进行思考，理解现象产生的原因、条件和客观规律等。同时要抓住事物的特征、用途和相互关系等。科普环保类文章一般为说明文，从结构上看大致可分为三个部分：   第一部分一般是文章的首段，主要用来提出文章的主题，即文章想要阐述、说明的主要内容；   第二部分是文章的主体，可由若干个段落组成，对文章的主题进行展开说明；   第三部分是结尾段，对文章的主题进行归纳总结。这类文章多用一般现在时，而且一般多使用客观性词语表述。有时为了强调客观性，也常使用被动语态。   从近几年的考试题来看，科普环保类的文章越来越与人们的实际生活相接近。由于此类文章缺乏故事情节，很多同学对此类文章感到费解。但一般的科普类文章都是就事论事，需要逻辑推理和想象的时候较少，因此此类阅读题也没有同学们想象中的那么难，只要多加训练，就能较好地答题。【阅读策略】 1、概要(Summarizing)：  阅完材料后，将所阅材料浓缩，摘要，做出所阅材料的书面或口头梗概。 2、组织(Organization)：  阅读后根据阅读内容，识别观点、人物、事件之间的关系以及文章的结构关系。如：时间关系、比较或对比关系、相关关系及因果关系等。