首页
登录
职称英语
[originaltext]To quickly review the main points covered in Chapter 7, the most
[originaltext]To quickly review the main points covered in Chapter 7, the most
游客
2025-01-17
19
管理
问题
To quickly review the main points covered in Chapter 7, the most important part of the system of nerves is the brain. The brain controls most of the body activities. Messages between the brain and the spinal cord are carried by nerves, which are made up of special cells called nerve cells. Nerve cells are found in the brain, spinal cord, spinal nerves and in the organs we use to see, hear, smell, taste and touch. Nerve cells have long string-like fibres that carry messages. These fibres have branched ends to send and receive messages. Remember that nerve cells are so small that they cannot be seen without a microscope. But one fibre from the nerve cell may stretch as long as three feet. There are many kinds of nerve cells and this chapter deals mainly with three kinds. The sensory nerve cells carry messages of heat, light, sound, and pressure from the skin, muscles and organs inside the body. Motor nerve cells carry messages to the muscles and this causes the muscles to move. Connecting nerve cells go between the sensory nerve cells and the motor nerve cells to the muscles. All these different nerve cells help us see, hear, taste, smell and feel.
选项
A、The function and nature of the brain.
B、The function and nature of nerve cells.
C、The five senses.
D、The spinal cord.
答案
B
解析
根据文中关键词出现的频度可判断本文的中心。例如本文中短语nerve cells神经细胞频繁出现,暗示文章主题与此有关。
转载请注明原文地址:https://tihaiku.com/zcyy/3917284.html
相关试题推荐
[originaltext]下面你将听到的是一段有关中国经济社会发展的讲话。中国的改革开放已经走过了26个年头。26年来,中国发生了翻天覆地的变化。
[originaltext]下面你将听到一段介绍北京申奥功臣何振梁的讲话。7月13日晚,在莫斯科国际贸易中心,当国际奥委会主席萨马兰奇宣布北京获得2
[originaltext]下面你将听到的是一段介绍美国著名导演斯皮尔伯格的讲话。StevenSpielberg’sfirstfilmswe
[originaltext]下面你将听到的是一段有关海洋的讲话。海洋是全球生命支持系统的一个不可缺少的组成部分。海洋不仅是自然资源的宝库,同时也是我
[originaltext]下面你将听到的是一位外国友人在中国一所大学的讲话。Iwouldliketothankyou,Mr.Pres
[originaltext]下面你将听到的是一段有关全球经济发展的讲话。Theongoingeconomicglobalizationand
[originaltext]下面你将听到的是一段有关企业管理的讲话。Itstandstoreasonthatforanorganiza
[originaltext]下面你将听到的是一段有关国际局势的讲话。InthewakeoftheColdWar,theworldh
[originaltext]下面你将听到的是一段有关旅游的讲话。旅游是一项集观光、娱乐、健身为一体的愉快而美好的活动。旅游业随着时代进步而不断进步。
[originaltext]下面你将听到的是一段有关文化方面的讲话。Whatweneedisa"CultureofTolerance"
随机试题
TaskTwo—ExperienceForquestions18-22,matchtheextractswiththeexperience
Chemistryplaysanimportantpartinourlife.The【1】______ofaclock,
二、考题解析 【教学过程】 (一)导入新课 教师出示一篇文档,这是关于最早的一台计算机埃尼阿克的一篇介绍文章,但是这篇文章全是文字的形式来对埃尼阿克进行介
对安装在顶棚装饰材料上的灯具,若灯泡距顶棚或木台太近,且顶棚为易燃材料时,应在灯
针对流感病毒抗原结构变异,下列哪种说法正确A.A型抗原变异最弱,B型抗原变异最强
下列选项中属于亚洲民间音乐的是()A.哈巴涅拉 B.弗拉门戈 C.伦巴
湿痰的特征是A.黄而粘稠,坚而成块 B.白而清稀 C.清稀而多泡沫
抽样误差的大小取决于()。A.总体内部的变异程度 B.抽样的方式和方法
根据国务院《邮政体制改革方案》的规定,国家邮政局于()实行政企分开改革。A:20
(2021年第1批真题)关于仲裁裁决的不予执行和撤销说法正确的是()。A.仲
最新回复
(
0
)