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(细胞) 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 quickly

B. the brain controls everything in your body

C. the computer is the best thing in the world

D. the brain is more powerful than any computer

2.In Paragraph 2, the underlined word “That” refers to(指的是) .

A. the body weight B. 2% of the body weight

C. all energy in the body D. around 20% of the energy in the body

3.Which is RIGHT according to 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

4.Which word can best describe the brain according to the passage?

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

5.In which magazine can the passage be found most probably?

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

B)请先阅读线面短文,掌握其大意,然后根据短文内容从下面方框内的七个选项中,选择五个还原到文中,使短文意思通顺,结构完整。

Now people have more money than before, and they want to enjoy life.1.Listen! Some people are talking about their vacation plans.

“I love sports; I’m going bike riding with my family on vacation.2.That’s really great,” said Mrs. Lee. Mr. Zhao loves nature. He said, “I’m walking in the countryside or going hiking in the mountains.3.”Miss Wang wants to be more beautiful. “I’m planning to go shopping. 4.” Zhang Yishan is a movie actor. He just finished his last movie,5.He said, I like going sightseeing. I am staying in Canada for a month.

A relaxing vacation! I can’t wait!

A. I want to buy lots of beautiful clothes.

B. Now he really wants to get some rest.

C. Many people can come to buy clothes in my shop.

D. We can exercise and enjoy lots of interesting places.

E. But a lot of people like traveling in the countryside.

F. I hope the beauty of nature can help me to forget all of my problems.

G. So people have different ideas about how to enjoy their vacations.

A. I want to buy lots of beautiful clothes.

B. Now he really wants to get some rest.

C. Many people can come to buy clothes in my shop.

D. We can exercise and enjoy lots of interesting places.

E. But a lot of people like traveling in the countryside.

F. I hope the beauty of nature can help me to forget all of my problems.

G. So people have different ideas about how to enjoy their vacations.

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