Peanut allergies (过敏) are among the most common and most dangerous of food aller

题文

Peanut allergies (过敏) are among the most common and most dangerous of food allergies. A tiny exposure to peanuts can mean big trouble for a person with a peanut allergy—not just sneezing or coughing，but something as potentially deadly as narrowing of the airways. But a recent study suggests that some children may be able to beat back their allergic reactions to peanuts by gradually introducing trace amounts of the nut into their diets. It's too early to say for certain，so if you have a peanut allergy，do not try this at home. But the first results look promising. Two teams of scientists have been experimenting on a group“of 29 children who are allergic to peanuts”At the beginning of the study，each kid received less than 1/1，000 of a peanut per day. (Imagine splitting a peanut into 1，000 parts!) Over the cour of the study， the children gradually incread the amount of the peanut in their diets Nine of the children have been receiving the treatment for two years，and five of tho nine now appear to be free of their peanut allergies，and can eat peanuts with no problem. But the other four have not benefited so much from the therapy（治疗）. The two teams of scientists are now doing a follow-up study on two groups of children with the allergy. Children in one group will receive the new therapy，while the others will not. Rearchers hope this study will help them learn if the therapy truly does work. Scientists don't understand why some people get peanut allergies and others don't，but are trying to find a way to help people with the allergy. Becau of the verity of some peanut allergies，scientists want to know the answer as soon as possible. “This is very encouraging， but remember，it's not something you try at home，”says one of the rearchers. 68.According to the passage，the peanut allergy . A. can be deadly if only a small amount is ud B. caus a lot of trouble for many parents C. allows people to eat only small amounts of peanuts D. is considered the least common and dangerous food allergy 69.Scientists are trying to treat peanut allergies by .A. exposing children with the allergy to as many peanuts as possible B. changing the eating habits of children with peanut allergies gradually C. giving children Peanuts in slowly increasing amounts D. exploring ways to resist the feelings caud by peanut allergies 70.The experiment shows that . A. people with peanut allergies can't u small amounts of peanuts in their diets.B. children are more easily cured than adultsC. all children can be cured of their peanut allergies if given more time of treatmentD. about 55-percent children with peanut allergies have been cured71. Scientists are now doing a follow-up study in order to . A. explore why some people get the illness while others don’tB. show whether peanut allergies can really be dangerousC. check whether the therapy really works or notD. explore whether the allergy can be cured without treatment 题型：未知难度：其他题型

答案

68-71  ACDC

解析

略

考点

据考高分专家说，试题“Peanut allergies (过敏.....”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。