阅读理解。 I'm a skeptic (怀疑论者) when it comes to the benefits of taking vitamins

题文

阅读理解。 I'm a skeptic (怀疑论者) when it comes to the benefits of taking vitamins and other supplements. We swallow far more than any other country- yet we're not the healthiest folks by far, nor do we live the longest. There's more bad news for vitamins this week: Turns out that taking folic acid (叶酸) and vitamin B12 supplements doesn't prevent heart attacks or death, according to a major new study in the Journal of the American Medical Association. It was hoped they would, since the vitamins do reduce levels of homocysteine (高半胱氨酸), an amino acid (氨基酸) that is higher in the blood of people who have a higher risk of heart dia. In fact, homocysteine was reduced 30 percent after one year of treatment in the participants who took both vitamins. But in the following three years, just as many vitamin takers died as tho who didn't take the vitamins. Even wor, the study was stopped early becau another similar study suggested that there may be an incread risk of cancer from taking B vitamins.   I had been taking a health-food store monster multivitamin (综合维生素剂) for months. Coincidentally, I had been experiencing some strange numbness in my legs that was starting to scare me. I remember sitting in a long meeting with my ankles crosd, and when I tried to stand up I crumpled on the floor and hit my chin on the glass coffee table becau my leg had gone completely numb and worthless. As I sat there and shook my leg, I got that"pins and needles" feeling and soon was OK. But it scared me enough to make an appointment with a neurologist, who suggested an MRI to rule out stroke, or a brain tumor(肿). While I'll never know for sure if the vitamins caud my problem, many, many studies have reminded us that pill forms of vitamins and minerals don't provide the same benefit as getting them from food. There's a lot we don't know about how the human body works. Until we know more, I'm getting most of my vitamins from the farmer's market.1. What can we know from the last paragraph? A. The writer is getting most of pill forms of vitamins from the markets. B. The writer continues to take vitamins in great quantities. C. The writer is getting vitamins from food, which can provide more benefits. D. The writer will never take pill forms of vitamins and minerals.2. Why do people take folic acid and vitamin B12 supplements? A. They want to stop heart attacks or live longer. B. They want to live longer. C. They want to increa risk of cancer. D. They want to experience some strange numbness. 3. Which of the following is not true according to the passage?A. It was the multivitamin he took that caud the writer to get the "pins and needles" feeling. B. Taking more vitamins will not make a man healthier or live longer. C. The vitamins can reduce levels of homocysteine in our body. D. The less homocysteine in our blood, the less chance we'll have heart attacks. 4. The best title of the passage can be ______. A. Vitamins: Benefit Us a Lot B. Vitamins: No Help for Your Heart C. Vitamins: Bad for the Brain, Too D. Some Bad News about Vitamins. 题型：未知难度：其他题型

答案

1-4: CAAD

解析

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考点

据考高分专家说，试题“阅读理解。 I'm a ske.....”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。