"Brain wave" machine may show ______.A．the last one or two minutes of one's dreamB．the sto

"Brain wave" machine may show ______.

A．the last one or two minutes of one's dream

B．the story which lasts for hours or even days

C．how long a dream lasts

D．the explanations of one’s dream

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更多“"Brain wave" machine may show …”相关的问题

第1题

You probably have a long mental list of moments and facts you wish you could remember—but

actually you cannot. The good news,【B1】______, is that while such memories may be currently【B2】______, they are not entirely gone, and could theoretically be【B3】______, according to a new brain research. In the study, biologist Jeffrey Johnson【B4】______16 college participants through an FMRI machine (which【B5】______nervous activity via blood flow)to compare brain patterns【B6】______memory formation and recall. First, he showed the students various common words and had them【B7】______a few tasks: say the word backwards in your head,【B8】______its uses, and picture how an artist would【B9】______it. Then, 20 minutes later, after the students re-entered the FMRI machine, Johnson showed them the list of words and asked them to recall【B10】______they could from before. Finally, he compared brain activity from both【B11】______and what he found will surprise you. Using【B12】______is called "pattern analysis" , its possible to【B13】______a unique pattern of brain activity to every individual thing we do. This means that when a participant says the word "apple" backwards the【B14】______pattern of brain activity is different from when he pictures the fruit.【B15】______interestingly, there is close similarity between the pattern that emerges when we【B16】______an activity and when we later recall it. The stronger our memory, the【B17】______the pattern, but as Johnson found, even at a moment【B18】______we cannot remember anything, our nerve cells still fire in a way that【B19】______the activity of when we formed the memory. This【B20】______that sometime in the future we may be able to retrieve the memories we thought wed lost forever.

【B1】

A．although

B．rather

C．though

D．therefore

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第2题

What Is Death？ People in the past did not question the difference between life and de

What Is Death？

People in the past did not question the difference between life and death. They could see that a person died when his heart stopped beating. People have learned, however, that the body does not die immediately when the heart stops beating. They discovered that we remain alive as long as our brain remains active. Today the difference between life and death is not as easy to see as in the past. Modern medical devices can keep the heart beating and the lungs breathing long after the brain stops. But is this life？

This question has caused much debate among citizens in the United States. Many of them want a law that says a person is dead when the brain dies. A person should be considered dead when brain waves stop even if machines can keep the body alive. Such a law would permit doctors to speed removal (切除) of undiseased (没病的) organs for transplant (移植) operations.

The brain is made of thousands of millions of nerve cells. These cells send and receive millions of chemical and electrical messages every day. In this way the brain controls the other body activities. Nerve-cell experts say it is usually easy to tell when the brain has died. They put small electrodes (电极) on a person's skull (头骨) to measure the electrical signals that pass in and out of the brain. These brain waves are recorded on a television screen or on paper. The waves move up and down every time the brain receives messages from the nerve cells. The brain is dead when the waves stop moving.

Although there are people who oppose the idea of a law on brain block for various reasons, the idea of brain wave activity as a test of death is slowly being accepted.

第 31 题 People in the past held that the difference between life and death

A．did not exist.

B．was easy to tell.

C．lay in the brain.

D．was open to debate.

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第3题

回答下列各题 C No form. of thinking is more interesting than dreams．“Brain wave’’mac

hines have shown that dreams last only two to ten seconds，yet they may tell a story that seems to take hours or even days．Some dreams can be explained by feelings of the moment．A dry throat might make us dream about the Sahara Desert．The sudden buzzing of a fly might become an airplane．Dreams can tell much more about people．Important dreams show our wishes and our worries．Sometimes they are difficult to understand．An expert on dreams may find that a struggle to get up a hill means that we al．e afraid that we do not reach our aims．He may say that our dream about flying with our wings means that we are tired of struggling and．want to get away from it all．Dreams of this kind are a normal way to ease our worries． Dreams________．

A.are no more interesting than form. of thinking

B.are much more interesting compared with thoughts

C.are reflections(反映)of one’s body

D.can tell people what they should do

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第4题

逃离，逃避（）

A.escape

B.survive

C.wave

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第5题