Question

【题目】阅读理解。
D
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 which 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）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）B
【解析】这是一篇科普类短文阅读。本文主要讲述了大脑是神奇的控制中心，它控制着你的思考，学习，感受和创造等等。
（1）C 考查细节理解题。根据文中 your brain contains about 100 billion neurons(神经元) -it would take you over 3, 000 years to count them all.可知，神经元把信息发送到我们的大脑。故选C。
（2）A 细节理解题．根据 “No computer has your brain's unbelievable ability to deal with the amount of information coming from your eyes, ears and other sensory organs.” 没有电脑能够处理这么大量的来自眼睛，耳朵以及其他感官的信息。主要是用电脑和人脑进行比较。故选A。
（3）D 细节理解题．根据“The structure （结构）of your brain changes every time you have a new thought”可知当有新的想法的时候，大脑的结构就会发生变化．故选D.
（4）B 主旨大意题．本文主要介绍了人的大脑---这个神奇的器官.大脑控制一切，它会让我们思考，学习，创造，感觉，眨眼，呼吸，心跳，科学家把它称为“宇宙中最复杂的东西”.故选B.