阅读理解 Now, we know that if we do not get enough vitamins, we are at ris

题文

阅读理解 Now, we know that if we do not get enough vitamins, we are at risk of developing a number of dias. As a result, vitamin supplements(补品),though expensive, are popular with people who worry that they are not getting enough vitamins from the foods they eat. But contrary to what many people think, medical experts have found little evidence that most supplements do anything to improvehealth or protect against dia. In fact, medical experts warn that taking too many of some vitamins can be harmful. For example, too much vitamin E can cau bleeding. People should discuss what vitamins they take with their doctors, as some vitamins can produce harmful side effects when mixed with medicines. Experts, however, do say that sometimes vitamins can help prevent dia. People who know theylack a particular vitamin should take vitamin supplements. Some older adults, for example, may not haveenough vitamin B-twelve. This is becau, as people get older, their body los its ability to take it fromfoods. Also, people who spend much time inside may need some extra vitamin D as the skin makes thisvitamin from sunlight. Different vitamins are found in different foods. Vitamin A is found in fish liver oil. It also is in the yellow part of eggs. Sweet potatoes, carrots and other darkly colored fruits and vegetables contain substances that the body can change into vitamin A. Vitamin B-twelve is found in green leafy vegetablesand other foods, like fruits. Vitamin K can be found in pork products. In fact, for most people, a balanced diet can ensure enough of the vitamins our bodies need. So, it is important for us to eat a mixture of foods every day to ensure that we get enough vitamins our bodies need. 1. What is probably talked about before this passage? A. How many vitamins a person's body needs.   B. How many vitamins some foods contain. C. The benefits that vitamins bring to our health. D. What people should do to stay healthy. 2. Vitamin supplements are popular with people becau ________.  A. people mistakenly think that they are good for their healthB. they contain more vitamins than the foods people eatC. food does not provide enough vitamins people needD. people fear that a lack of vitamins will lead to dia 3. From the passage, we can learn that medical experts advi people _________. A. never to take any vitamin supplements   B. to depend only on food for their vitamins C. not to take any vitamins together with medicinesD. to consult doctors before taking vitamin supplements 4. For people who lack Vitamin B-twelve, they can eat more from _______. A. sweet potatoes   B. green leafy vegetables  C. pork products   D. eggs 题型：未知难度：其他题型

答案

1-4: CDDB

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据考高分专家说，试题“阅读理解 Now, .....”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。