Motherhood may make women smarter and may help prevent dementia in old age

题文

Motherhood may make women smarter and may help prevent dementia （痴呆） in old age by bathing the brain in protective hormones （荷尔蒙） , U.S. rearchers reported on Thursday.Tests on rats show that tho who rai two or more litters of pups do considerably better in tests of memory and skills than rats who have no babies, and their brains show changes that suggest they may be protected against dias such as Alzheimer’s （早老痴呆症）. University of Richmond psychology professor Craig Kinsley believes his findings will translate into humans.“Our rearch shows that the hormones of pregnancy are protecting the brain, including estrogen （雌激素）, which we know has many neuroprotective （保护神经的） effects,” Kinsley said.“It’s rat data but humans are mammals just like the animals are mammals,” he added in a telephone interview. “They go through pregnancy and hormonal changes.”Kinsley said he hoped public health officials and rearchers will look to e if having had children protects a woman from Alzheimer’s and other forms of age-related brain decline.“When people think about pregnancy, they think about what happens to babies and the mother from the neck down,” said Kinsley, who prented his findings to the annual meeting of the Society of Neuroscience in Orlando, Florida.“They do not realize that hormones are washing on the brain. If you look at female animals who have never gone through pregnancy, they act differently toward young. But if she goes through pregnancy, she will sacrifice her life for her infant—that is a great change in her behavior that showed in genetic alterations （改变） to the brain.”小题1: How do scientists know “Motherhood may make women smarter”?A．Some rearchers have told them.B．Many women say so.C．They know it by experimenting on rats.D．They know it through their own experience.小题2: What does the phra “litters of pups” mean in the cond paragraph?A．Baby rats.B．Animals. C．Old rats. D．Grown-up rats.小题3: What can protect the brain of a woman according to the passage?A．Estrogen.B．The hormones of pregnancy.C．More exerci.D．Taking care of children.小题4:“It’s rat data but humans are mammals just like the animals are mammals.” What does the ntence suggest?A．The experiments on the rats have nothing to do with humans.B．The experiments on the rats are very important for animals.C．The experiments on the rats are much the same on humans.D．The experiments on the rats are much the same on other animals. 题型：未知难度：其他题型

答案

小题1:C小题1:A小题1:B小题1:C

解析

略

考点

据考高分专家说，试题“Motherhood may make .....”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。