Question

【題目】

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(復(fù)雜) 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(神經(jīng)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 (燈泡).

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 (結(jié)構(gòu)) 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】

本文主要是在介紹大腦是一個(gè)神奇的控制中心，它控制著思考、學(xué)習(xí)、感受、創(chuàng)造等等。

【1】句意：從文章中我們知道神經(jīng)元向你的大腦發(fā)送信息。A.非常緩慢地接受信息；B.只能在你的皮膚中找到；C.向你的大腦發(fā)送信息；D.需要電來進(jìn)行工作。原文“Your neurons create and send more messages than all the phones in the world.”（您的神經(jīng)元?jiǎng)?chuàng)造并發(fā)送比世界上所有手機(jī)更多的消息。）說明神經(jīng)元可以向大腦發(fā)送信息，故選C。

【2】句意：在第三段中，作者提到電腦是為了將它們和人腦作比較。A.和人腦作比較；B.展示它們變化得多么快；C.表示電腦沒有能力；D.要求人們更多地使用電腦。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.”（這些神經(jīng)元可以以每小時(shí)320公里的速度發(fā)送這些信息。沒有任何計(jì)算機(jī)可以有你的大腦那么令人難以置信的能力來處理來自你的眼睛，耳朵和其他感覺器官的大量信息。）說明引用電腦是為了將神經(jīng)元和人腦作比較，故選A。

【3】句意：當(dāng)你有了一個(gè)新想法，你的大腦的結(jié)構(gòu)會(huì)改變。A.你的大腦能點(diǎn)亮一個(gè)電燈泡；B.你的心臟會(huì)跳動(dòng)更快；C.你會(huì)記得些什么；D.你的大腦的結(jié)構(gòu)會(huì)改變。原文“The structure (結(jié)構(gòu)) of your brain changes every time you have a new thought, remember or learn something.”（每當(dāng)你有新想法，記憶或?qū)W習(xí)某些東西時(shí)，你的大腦結(jié)構(gòu)就會(huì)發(fā)生變化。）說明有新想法時(shí)，大腦結(jié)構(gòu)會(huì)變化，故選D。

【4】句意：關(guān)于大腦的哪一項(xiàng)陳述是正確的？A.大腦中的神經(jīng)元的速度可以達(dá)到320公里每分鐘。B.由神經(jīng)元產(chǎn)生的電幾乎不能點(diǎn)亮一個(gè)電燈泡；C.我們通過在大腦中一遍又一遍地發(fā)送信息來學(xué)習(xí)一樣新技能；D.在接收到信息之后，大腦會(huì)把相同的神經(jīng)元送回到你的腳部。原文“These neurons can send this information at more than 320 kilometers per hour.”（這些神經(jīng)元可以以每小時(shí)320公里的速度發(fā)送這些信息。）說明A錯(cuò)誤，原文“And although one neuron creates only a little electricity, all your neurons together can produce enough electricity to power a light bulb”（然一個(gè)神經(jīng)元只產(chǎn)生少量電能，但所有神經(jīng)元一起產(chǎn)生的電能足以為燈泡供電）說明B錯(cuò)誤。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.”（當(dāng)你練習(xí)時(shí)，你的大腦會(huì)一次又一次地發(fā)出“騎自行車”的信息，很快你就會(huì)學(xué)會(huì)行動(dòng)，你可以輕松地騎自行車。）說明我們通過在大腦中一遍又一遍地發(fā)送信息來學(xué)習(xí)一樣新技能，C正確，D無依據(jù)，故選C。

【5】句意：這篇文章主要是關(guān)于人類的大腦是一樣多么難以置信的器官。A.大腦學(xué)習(xí)事物的全部步驟；B. 人類的大腦是一樣多么難以置信的器官；C.大腦是如何讓人們比計(jì)算機(jī)聰明的；D.你可以做的讓你的大腦工作更迅速的事情。本文主要是在介紹大腦是一個(gè)神奇的控制中心，它控制著思考、學(xué)習(xí)、感受、創(chuàng)造等等，也就是感嘆大腦這個(gè)器官的不可思議，故選B。