题目内容

It is common for older people to forget things. Now an American study has found that memory starts to fail when we are young adults. People younger than thirty years of age usually do not know that they are starting to forget information. But scientists from the University of Michigan say the loss of memory has usually already started.

    Researchers say people do not observe this slow reduction in mental ability until the loss affects their everyday activities.

    Denise Park led the new study. She directs the Centre for Aging and Cognition at the Institute for Social Research at the University of Michigan. Her team studied more than 350 men and women between the ages of twenty and ninety years. The study identified people in their middle twenties with memory problems.

    She says young adults do not know they are forgetting things because their brains have more information than they need.

    But she says that people in their twenties and thirties are losing memory at the same rate as people in their sixties and seventies.

    Ms. Park says people between the ages of sixty and seventy may note the decrease in their mental abilities. They begin to observe that they are having more trouble remembering and learning new information.

    The study found that older adults are more likely to remember false information as being true. For example, they remembered false medical claims as being true. Younger people remembered hearing the information. But they were more likely to remember that it was false.

    Ms. Park is now using modern imaging equipment to study what happens in the brains of people of different ages. She is studying what parts of the brain older adults use for different activities compared to younger adults. Ms. Park says mental performance is a direct result of brain activity and brain structure. She says keeping the brain active is important. She hopes future studies will identify ways to improve the operation of our aging minds.

The passage is meant to _____________.

A. emphasize the importance of exercising the brain

B. analyze the difference between different age groups on the loss of memory

C. reveal the decrease in mental ability of young adults as well as older adults

D. introduce effective ways to improve memory

According to the passage, young adults differ from older adults in that ________.

A. they lose their memory at a slower rate

B. they rarely realize they have memory problems

C. their brains can store much more information

D. all of the above

Which of the following statements is NOT TRUE?

A. Not until the loss of memory affects their daily activities, do people notice the decrease in their mental abilities.

B. People begin to lose memory in their twenties.

C. Older people tend to remember false information as being true.

D. Younger people find it easier to remember the information that is proven false.

It can be inferred from what Denis Park says that ______.

A. mental performance can be improved

B. mental ability is determined entirely by brain structure

C. people of different ages use different parts of the brain for memorizing

D. different parts of the brain are responsible for different mental activities

Which of the following is a suitable title for the passage?

A. The Mysterious Brain         B. The Ability to Forget

C. Memory Reduction           D. Mental Performance

【小题1】C

【小题1】B

【小题1】D

【小题1】A

【小题1】C


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相关题目

In the United States, it is not customary to telephone someone very early in the morning. If you telephone him early in the day, while he is shaving or having breakfast, the time of the call shows that the matter is very important and requires immediate attention. The same meaning is attached to telephone calls made after 11:00 p.m. If someone receives a call during sleeping hours, he assumes(想当然地认为)it's a matter of life and death. The time chosen for the call comm.unicates its importance.  

In social life, time plays a very important part. In the U.S.A. guests tend to feel they are not highly regarded if the attention to a dinner party is extended only three or four days before the party date. But it is not true in all countries. In other areas of the world, it may be considered foolish to make an appointment too far in advance because plans which are made for a date more than a week away tend to be forgotten. The meaning of time differs in different parts of the world. Thus, misunderstandings arise(产生) between people from cultures that treat time differently. Promptness is valued highly in American life, for example. If people are not prompt, they may be regarded as impolite or not fully responsible. In the U.S. no one would think if keeping a business associate waiting for an hour. It would be too impolite. A person who is 5 minutes late is expected to make a short apology. If he is less than 5 minutes late, he will say a few words of explanation, though perhaps he will not complete the sentence. 

60. "The same meaning is attached to telephone calls after 11:00p.m." Here "attached" means _____.

A. taken       B. drawn        C. given          D. shown

61. According to this passage, time plays an importantt role in _____.  

A. everyday life                    B. school life

C. communication                    D. private life

62. The best title for this passage is _____.

A. The Voice of Time

B. The Importance of Time

C. The Importance of an Announcement 

D. Time and Tide Wait for No Man

63. According to the passage, the author of the article may agree to which of the following statements?  

A. It is appropriate to send your invitation cards three or four days before a dinner party date in U.S.A..

B. It may be appropriate to send your invitation cards to your guests three or four days before a dinner party date in some countries.

C. It is best for one to make telephone calls at eight because it costs much less.

D. If one is less than 5 minutes late, he has to make a short apology.

Wherever you went in the large hall, people were talking about the same thing. The PT/ Wireless and Networks Comm. China(中国国际通信设备技术博览会)held in Beijing last year was the biggest telecom exhibition in Asia.There were 400 representatives from 21 countries. But everyone was speaking the language of technology and there was only one word on their lips-3G.  

Third-generation mobile phones, known as 3G, are the next big step for the telecom industry Data speeds in 3G networks are much quicker than present technology. This means users can have high-speed Internet access and enjoy video and CD-quality music on their phones.

“Mobile data is not a dream; it’s not an option—it’s a requirement,” said Len Lauer, head of US communications company Sprint PCS, at a 3G conference in Bangkok earlier this month.

       With 3G, you can forget about text messages telling you yesterday’s news; a 3G phone can receive video news programs, updated four times a day. Internet access will also be much quicker, making it easier to surf the Web on your phone than on your computer at home.

       Face-to-face video calls

       And don’t worry about getting lost. 3G phones offer map services so you can find a new restaurant just by pressing a few keys on your handset.

       However, the most impressive part of 3G technology is video calling. With live two-way video communication, you can have face-to-face talks with friends and family on your mobile phone.

       Many European countries have already launched the service. In May 2000 the UK Government awarded five licenses to run 3G wireless services, while the first 3G phones arrived in Italy four years later.

       International telecom companies can’t wait to sell 3G in China, the world’s largest mobile telecommunications market. But they will have to be patient. At the moment, China is busy testing its 3G-based technologies, networks and services. This will be followed by a trial phase before the phones can finally hit the shops.

“We need to create a pool of 3G customers before the large-scale commercial launch of the service,”said Fan Yunjun, marketing manager for Beijing Mobile.“We expect that the 3G licenses will be given out late next year.”

1.What can be inferred about the exhibition from the first paragraph?

       A.About 400 people attended the exhibition.

       B.It was the biggest exhibition ever held in Asia.

       C.Representatives were required to speak English.

       D.The exhibition was mainly about 3G technology.

2.With 3G, you can do the following EXCEPT       .

       A.find your way easily                            

       B.learn what’s going on in the world

       C.make your computer run faster            

       D.make face-to-face video telephone calls

3.According to the text, which functions of the following makes 3G technology most extraordinary?

       A.It can provide video news programs, updated four times a day.

       B.Users can have face-to-face talks with friends and family on your mobile phone

       C.Users can enjoy video and CD-quality music on their phones

       D.It’ll be easier for users to surf the Web on your phone than on your computer at home.

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