Question

【题目】

Your brain controls everything you do. It makes it possible for you to think, learn, create and feel; to blink(眨眼) and breathe and for your heart to heat –this fantastic control center is your brain. It is so amazing that a famous scientist once called it “the most complex(复杂) thing we have yet discovered in our universe”.

Can this small grey organ(器官), which weighs less than one and a half kilos, really do so much? Amazingly, your brain contains about 100 billion neurons(神经元) -it would take you over 3 ,000 years to count them all. Believe it or not, the activity in your brain never stops. Your neurons create and send more messages than all the phones in the world. And although one neuron creates only a little electricity, all your neurons together can produce enough electricity to power a light bulb (灯泡).

So exactly how fast does your brain work? Well, imagine this: a bee lands on your foot. Neurons in your skin send this information to your brain at a speed of more than 240 kilometers per hour. Your brain then uses other neurons to send the message back to your foot to shake the bee off quickly. These neurons can send this information at more than 320 kilometers per hour. No computer has your brain's unbelievable ability to deal with the amount of information coming from your eyes, ears and other sensory organs.

But how does your brain allow you to learn things that you will use in the future? The structure (结构) of your brain changes every time you have a new thought, remember or learn something. For example, riding a bike seems impossible at first, but soon you are able to do it. How? As you practice, your brain sends "bike riding" messages again and again Soon, the actions are learnt and you are able to ride a bike easily from then on.

【1】From the passage we know that neurons___________.

A. receive messages very slowly B. are only found in your skin

C. send messages to your brain D. need electricity to work

【2】In Paragraph 3, the writer mentions computers to ___________ .

A. compare them with the human brain

B. show how fast they have become

C. say that computers have no abilities

D. ask people to use computers more

【3】When you have a new thought, ___________ .

A. your brain will power a light bulb B. your heart beats faster

C. you remember something D. the structure of your brain changes

【4】Which of the statements about the brain is TRUE?

A. The speed of the neurons in the brain can be up to 320 kilometers per minute.

B. The electricity produced by the neurons can hardly power a light bulb.

C. We learn a new skill by sending the messages again and again through the brain.

D. After receiving the information, the brain send the same neurons back to your foot.

【5】The article is mainly about ___________.

A. all the steps when your brain learns things

B. what an unbelievable organ the human brain is

C. how the brain makes people smarter than computers

D. the things you can do to make your brain work faster

Answer 1

【答案】

【1】 C

【2】 A

【3】 D

【4】 C

【5】 B

【解析】

本文主要是在介绍大脑是一个神奇的控制中心，它控制着思考、学习、感受、创造等等。

【1】句意：从文章中我们知道神经元向你的大脑发送信息。A.非常缓慢地接受信息；B.只能在你的皮肤中找到；C.向你的大脑发送信息；D.需要电来进行工作。原文“Your neurons create and send more messages than all the phones in the world.”（您的神经元创造并发送比世界上所有手机更多的消息。）说明神经元可以向大脑发送信息，故选C。

【2】句意：在第三段中，作者提到电脑是为了将它们和人脑作比较。A.和人脑作比较；B.展示它们变化得多么快；C.表示电脑没有能力；D.要求人们更多地使用电脑。原文“These neurons can send this information at more than 320 kilometers per hour. No computer has your brain's unbelievable ability to deal with the amount of information coming from your eyes, ears and other sensory organs.”（这些神经元可以以每小时320公里的速度发送这些信息。没有任何计算机可以有你的大脑那么令人难以置信的能力来处理来自你的眼睛，耳朵和其他感觉器官的大量信息。）说明引用电脑是为了将神经元和人脑作比较，故选A。

【3】句意：当你有了一个新想法，你的大脑的结构会改变。A.你的大脑能点亮一个电灯泡；B.你的心脏会跳动更快；C.你会记得些什么；D.你的大脑的结构会改变。原文“The structure (结构) of your brain changes every time you have a new thought, remember or learn something.”（每当你有新想法，记忆或学习某些东西时，你的大脑结构就会发生变化。）说明有新想法时，大脑结构会变化，故选D。

【4】句意：关于大脑的哪一项陈述是正确的？A.大脑中的神经元的速度可以达到320公里每分钟。B.由神经元产生的电几乎不能点亮一个电灯泡；C.我们通过在大脑中一遍又一遍地发送信息来学习一样新技能；D.在接收到信息之后，大脑会把相同的神经元送回到你的脚部。原文“These neurons can send this information at more than 320 kilometers per hour.”（这些神经元可以以每小时320公里的速度发送这些信息。）说明A错误，原文“And although one neuron creates only a little electricity, all your neurons together can produce enough electricity to power a light bulb”（然一个神经元只产生少量电能，但所有神经元一起产生的电能足以为灯泡供电）说明B错误。原文“As you practice, your brain sends "bike riding" messages again and again Soon, the actions are learnt and you are able to ride a bike easily from then on.”（当你练习时，你的大脑会一次又一次地发出“骑自行车”的信息，很快你就会学会行动，你可以轻松地骑自行车。）说明我们通过在大脑中一遍又一遍地发送信息来学习一样新技能，C正确，D无依据，故选C。

【5】句意：这篇文章主要是关于人类的大脑是一样多么难以置信的器官。A.大脑学习事物的全部步骤；B. 人类的大脑是一样多么难以置信的器官；C.大脑是如何让人们比计算机聪明的；D.你可以做的让你的大脑工作更迅速的事情。本文主要是在介绍大脑是一个神奇的控制中心，它控制着思考、学习、感受、创造等等，也就是感叹大脑这个器官的不可思议，故选B。