A.have toB.canC.mustD.need

A.畬族B.藏族C.維吾爾族D.壯族

A.緯度位置B.海陸位置C.地勢(shì)特征D.氣候特征

A.東南、東北和西北地區(qū)B.西南、西北和東北地區(qū)

C.西南、東南和東北地區(qū)D.東南、西南和西北地區(qū)

A.theB.aC.anD./

A.洋盆B.大洋中脊C.大陸架D.大陸坡

A.黑龍江與烏蘇里江交匯處B.新疆帕米爾高原

C.南海曾母暗沙D.黑龍江省黑河

A.赤道B.北極圈C.南回歸線D.北回歸線

【題目】

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(反應(yīng)), 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(細(xì)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 longterm memory establishment. 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】From the first paragraph we know that ________.

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】Which of the following is TRUE 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.

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

A.Business WeeklyB.MedicineC.ScienceD.Sports

【4】The underlined word“establishment”in the passage means“________” in Chinese.

A.儲(chǔ)存B.形成C.空缺D.建立

【5】The best title for this passage is “________”．

A.A Powerful Organ—Human Brain

B.How Computers Work

C.Scientists' Research

D.Human Being's Activities

A.磨面B.抽水C.觀賞D.發(fā)電