Question

【题目】

You must think a computer is the best thing in the world, right? You must think it works at a super speed and can do everything? Well, it’s not! In fact, the brain is much more powerful than any super computer! Think about when a glass is just about to fall off the table. Your brain controls everything that you need to do to save that glass from falling. First your eyes check out what’s going on, then tell your brain, and your brain decides how quickly you need to react (反应), and then your muscles (肌肉) go into action. That is just from your brain. No computer could ever come close to that!

The brain weighs just 3 pounds, but it controls everything you do from thinking, learning, feeling even to breathing and your heart beating. Even though the brain is just 2% of your body weight, it uses around 20% of all your energy in your body. That is a lot for such a small organ (器官). There are about 100 billion tiny, tiny little cells in your brain. There are so many that it would take you over 3,000 years to count them all!

Your brain stops growing when you’re 18, but it actually keeps on developing and learning new things. So your parents are really super smart! You won’t be able to fool them! Believe it or not, your brain NEVER stops working. Even during sleeping, the brain works for long-term memory establishment (建立). It is realized that the brain is the second organ in the body as the heart that never stops during human lives.

So everyone should be proud of such a gift of nature.

【1】In Paragraph 1,the writer wants to tell us .

A.eyes and muscles react quicklyB.the brain controls everything in your body

C.the computer is the best thing in the worldD.the brain is more powerful than any computer

【2】What can we know from the passage?

A.The brain doesn’t work during sleeping.B.The brain is the only organ that never stops.

C.The brain keeps growing during human lives.D.The brain keeps on developing during human lives.

【3】Which word can best describe the brain according to the passage?

A.Magic.B.Quick.C.Light.D.Developing.

【4】In which magazine can the passage be found most probably?

A.Business Weekly.B.Medicine.C.Science.D.Sports.

Answer 1

【答案】

【1】D

【2】D

【3】A

【4】C

【解析】

本文主要讲述的是有关大脑的事情，大脑明显优于计算机，大脑虽然在18岁之后就停止了生长，但是它会一直工作到生命的结束。

【1】段落大意题。根据文中“In fact, the brain is much more powerful than any super computer”!事实上，大脑比任何超级计算机都强大得多。可知讲述的是电脑远远比不上人脑，故选D。

【2】细节理解题。根据文中“it uses around 20% of all your energy in your body”.用掉所有能量的20%，由此可知他的能量消耗比较大，故选D。

【3】推理判断题。根据文中“It is realized that the brain is the second organ in the body as the heart that never stops during human lives”.大脑不会停止工作，前文也提到他控制着我们身体的每一个器官，由此可知这是一个神奇的器官，故选A。

【4】主旨大意题。文章主要讲述的是有关大脑的事情，讲述了其生长以及工作的情况，这是科普性质的阐述，最有可能来源于科学杂志，故选C。