【題目】 "What's the name of our neighbour? 1 can't remember right now." Have you ever heard your grandparents ask questions like this? Usually, we think older people's memories become bad because their brains get weak, but a team of scientists at the University of Tubingen in Germany has a different idea.

"The human brain works slower in old age," said lead scientist Michael Ramscar, "but only because they have stored more information over time."

The findings are based on a series of computer simulations(模擬)of learning and memory. Scientists let the computers read a certain amount of words and learn new things each day. When the computer "reads" only so much, its performance on cognitive(認(rèn)知)tests is similar to that of a young adult. But if the computer learned the experiences we might have over a lifetime, its performance is similar to that of an older adult.

Often it was slower because increased "experience" had caused the computer's database(數(shù)據(jù)庫)to grow, giving it more data to process-which takes time. This is similar to old people. Imagine a person knows two people's birthdays. Another person knows the birthdays of 2,000 people, but can only match the right person to the right birthday nine times out of 10. Can you say the first person has a better memory than the second person?

The basic idea is that "The larger the library you have in your head, the longer it usually takes to find a particular word." Benedict Carey, a science reporter, wrote in an article about the study.

1Why did the writer use a question at the beginning?

A.To attract readers' attention to the topic.

B.To invite the readers to answer the question.

C.To prove that older people have bad memories.

D.To encourage readers to think of their neighbours.

2How did the scientists do their research?

A.They interviewed all the old people of their neighbours.

B.They followed the experiences of a group of old people.

C.They asked both young and old people the same questions.

D.They used computers to simulate human learning and memory.

3According to the research, why do old people forget other people's names easily?

A.Because they have a very poor memory.

B.Because they are too old to remember things.

C.Because their brains become weaker than before.

D.Because they have too much information in their brains.

4What would be the best title for the story?

A.Is it Better to Be Old or YoungB.Human Brain's Processing Ability.

C.Do Old People Have Poor Memories?D.Scientists' New Findings on Brains.

【答案】

1A

2D

3D

4C

【解析】

文章大意:通常,我們認(rèn)為老年人的記憶力變差是因?yàn)樗麄兊拇竽X變得虛弱,但是德國圖賓根大學(xué)的一個(gè)科學(xué)家小組有不同的想法。這些發(fā)現(xiàn)是基于一系列學(xué)習(xí)和記憶的計(jì)算機(jī)模擬?茖W(xué)家讓計(jì)算機(jī)每天讀一定量的單詞并學(xué)習(xí)新事物。通常它比較慢,因?yàn)椤敖?jīng)驗(yàn)”的增加導(dǎo)致了計(jì)算機(jī)數(shù)據(jù)庫的增長,從而使它能夠處理更多需要時(shí)間的數(shù)據(jù)。這和老年人很相似。

1猜測判斷題。根據(jù)文中“What's the name of our neighbour? 1 can't remember right now." Have you ever heard your grandparents ask questions like this? “我們鄰居叫什么名字?我現(xiàn)在記不起來了。“你有沒有聽過你的祖父母問這樣的問題?可知,作者一開始就用了一個(gè)問題來吸引讀者的注意力。故答案為A。

2細(xì)節(jié)理解題。根據(jù)文中“The findings are based on a series of computer simulations(模擬)of learning and memory. Scientists let the computers read a certain amount of words and learn new things each day. When the computer "reads" only so much, its performance on cognitive(認(rèn)知)tests is similar to that of a young adult. But if the computer learned the experiences we might have over a lifetime, its performance is similar to that of an older adult.” 這些發(fā)現(xiàn)是基于一系列學(xué)習(xí)和記憶的計(jì)算機(jī)模擬?茖W(xué)家讓計(jì)算機(jī)每天讀一定量的單詞并學(xué)習(xí)新事物。當(dāng)電腦“讀”得太多時(shí),它在認(rèn)知測試中的表現(xiàn)與年輕人相似。但是,如果計(jì)算機(jī)學(xué)習(xí)了我們一生中可能會(huì)有的經(jīng)驗(yàn),它的性能就類似于老年人。可知,故答案為D

3細(xì)節(jié)理解題。根據(jù)“"The human brain works slower in old age," said lead scientist Michael Ramscar, "but only because they have stored more information over time." 首席科學(xué)家邁克爾拉姆斯卡(Michael Ramscar)說:“人類的大腦在老年時(shí)工作較慢,但這僅僅是因?yàn)殡S著時(shí)間的推移,它們儲(chǔ)存了更多的信息!笨芍,故答案為D。

4最佳標(biāo)題。根據(jù)文章內(nèi)容可知,我們認(rèn)為老年人的記憶力變差是因?yàn)樗麄兊拇竽X變得虛弱,但是德國圖賓根大學(xué)的一個(gè)科學(xué)家小組有不同的想法?芍,這篇文中最好的標(biāo)題是老年人記憶力差嗎?故答案為C

先通讀全文,了解大意。找到題干中的關(guān)鍵詞,有針對(duì)性找出相關(guān)語句進(jìn)行仔細(xì)分析,結(jié)合選項(xiàng)選出正確答案。推理判斷要在抓住關(guān)鍵句子的基礎(chǔ)上合理分析,才能得出正確的答案。細(xì)節(jié)題較為簡單,在正確理解題目后,仔細(xì)閱讀短文,找出符合答案的相關(guān)句子,仔細(xì)推敲,確定答案。例如,第3小題,細(xì)節(jié)理解題。根據(jù)“"The human brain works slower in old age," said lead scientist Michael Ramscar, "but only because they have stored more information over time." 首席科學(xué)家邁克爾拉姆斯卡(Michael Ramscar)說:“人類的大腦在老年時(shí)工作較慢,但這僅僅是因?yàn)殡S著時(shí)間的推移,它們儲(chǔ)存了更多的信息!笨芍,故答案為D。

練習(xí)冊系列答案
相關(guān)習(xí)題

科目:初中英語 來源: 題型:

【題目】聽材料,回答下列各題。

1What’s Jenny’s favorite invention?

A.The car.B.The Internet.C.The plane.

2When did Henry invent a kind of machine?

A.In 2011.B.In 2012.C.In 2013.

查看答案和解析>>

科目:初中英語 來源: 題型:

【題目】Are you really a nice person? Being nice means full of love and purity(純潔).

1 You should be full of qualities and virtues(美德)like politeness, kindness, tenderness, generous, forgiving etc.

You are nice means you are kind to yourself first because being nice you are sowing seeds for your future then you are truly nice to others. The one who doesn't think good for himself can never be good to others. Love yourself, accept yourself because you are here for some reason just like everybody is here for some reason.

2

The big sign of nice people is they always ready to help anyhow. They understand the pain of others as their own pain and they never give pain to others. Nice people always speak less and talk sweetly, they always take care to speak, never hurt anyone's heart by mistake. Kindness is a big virtue and one should be kind to everybody specially with poor people.3

Some people are silent and are considered weak. Silence is a beauty of nice people just like charity. Being silent means they are not interested in quarrels or hurting someone. 4 As Abhishek Tiwari said, “Do not take me for granted, being nice is not a matter of weakness, it is a matter of choice.”

5 They are naturally nice. Their actions show it. My dad never tried to please others. Whatever he did, he did selflessly. We have got a great lesson from himthat being nice is very important, not only for others but for your own self as well.

A. Nice people never try to become nice.

B. They love peace and they spread peace.

C. So accept yourself and others as they are.

D. Being nice means being kind with everyone.

E. Have you ever thought of importance of being nice?

F. You should know how to behave with people specially those who are poor.

查看答案和解析>>

科目:初中英語 來源: 題型:

【題目】________smart the driverless car is! I really want to have one.

A.WhatB.HowC.What aD.How a

查看答案和解析>>

科目:初中英語 來源: 題型:

【題目】Don't worry about Jack. Everyone here is prepared to help him.

OK, I will tell him about that. I think he must be very happy.

A.would like toB.refuses toC.gets ready to

查看答案和解析>>

科目:初中英語 來源: 題型:

【題目】In the past 6 years, my primary school classmates ___________a lot.

A.has changedB.has been changedC.have been changedD.have changed.

查看答案和解析>>

科目:初中英語 來源: 題型:

【題目】 When your pen is broken, the battery in your toy runs out, or you have some leftover food, what do you do with these things? You will probably throw them all into one bin(垃圾箱). But actually, all kinds of rubbish need to be sorted(分類)separately.

Garbage sorting is a big issue worldwide. In recent years, some Chinese cities have been working. hand on it Shanghai has worked with Alipay to create a “green account(賬戶)” service for its residents(居民). Account holders get points by sorting their rubbish correctly. Through the Alipay app, they ran exchange the points for milk, phone cards and other products. The city is asking all of its residents to sort their rubbish into four groups: wet, recyclable(可回收的), harmful and dry.

Wet waste is also known as household waste. "They are things you don't want but that pigs can eat," Guangzhou Daily explained.

Paper, metal(金屬)glass and other things that can be reused are recyclable waste.

Harmful waste includes things like medicine, batteries and fluorescent bulbs(熒光燈燈泡)

Finally, any waste that's not wet, recyclable or harmful will go in the "dry waste" bin.

Many other Chinese cities are also using this method to sort their garbage. For example, Shenzhen has been sorting its garbage into the same four groups since 2012. Students there also receive waste-sorting guidebooks that they must study.

China is improving its waste sorting efforts. There is still a long way to go. But it's never too late to learn how to sort your trash properly and protect the environment.

If you don't sort your garbage, it will go to a landfill(垃圾填埋場)and be buried together. These landfills can take up large areas of ground that could have been used for planting trees or crops. The electronic waste you throw away, such as batteries, can pollute the soil and groundwater(地下水). Other pieces of garbage, like the metal part of a pen, can be used to make other things if they are properly recycled.

1How should we deal with all kinds of garbage?

A.We can throw them all into one bin.B.We can sort them separately.

C.We can throw them away freely.D.We can reuse them all. .

2How is Shanghai encouraging people to sort their garbage?

A.Creating a "green account" service with the help of Alipay.

B.Paying people to sort their rubbish correctly.

C.Allowing people to exchange rubbish with each other.

D.Providing its residents with guidebooks to help them.

3Which of the following would be classified as wet waste?

A.Batteries.B.GlassesC.Leftover food.D.Medicine.

4What do we know about garbage sorting in China?

A.It started its garbage sorting system in 2012.

B.Students have to take waste sorting classes at school.

C.There is still a lot of work to be done in this area.

D.Burying garbage is common method of getting rid of garbage.

查看答案和解析>>

科目:初中英語 來源: 題型:

【題目】

A butcher(屠夫)is in his meat shop one day when a dog walks in. It has an envelope in its mouth. The butcher takes it out of the dog's mouth and opens it. Inside, there's 20, and a(n) ________. It says, "Can I have a dozen pork chops(豬排)and a steak please?" The butcher is _____. He gives the dog the ______in a bag, and puts it around the dog's neck.

The next day, the same thing happens. But this time, the butcher decides to ______ the dog home. So, when the dog leaves the shop, the man walks after it. He watches when the dog stops at some traffic lights. The dog presses the button to cross the road and waits. The green "man" on the traffic light ______ and the dog crosses, carefully watching for traffic. Next, the dog arrives at a bus stop. It waits ______ again and jumps onto a bus when it comes. The butcher is very surprised and ______ on his way.

Finally, the dog ______ the bus and walks to a house. The man watches from the street as the dog starts scratching(抓)at the door with his paw. After a couple of seconds, a woman ______ the door and starts shouting at the dog. The butcher runs to the woman and says, "Hey! What are you doing? This dog is fantastic. He's the ______ animal I've ever seen." And the woman replies, "What? This is the third time this week he's forgotten his key."

1A.newspaperB.noteC.e-mailD.invitation

2A.annoyingB.angryC.amazedD.ashamed

3A.meatB.vegetableC.envelopeD.order

4A.takeB.carryC.followD.lead

5A.singsB.walksC.shoutsD.waves

6A.patientlyB.exactlyC.quicklyD.suddenly

7A.stopsB.continuesC.avoidsD.returns

8A.gets toB.gets onC.gets offD.gets down

9A.opensB.closesC.breaksD.knocks

10A.most healthyB.laziestC.funniestD.smartest

查看答案和解析>>

科目:初中英語 來源: 題型:

【題目】An unforgettable thing in junior high school

提示:請以“An unforgettable thing in junior high school ”為題,寫一篇英語短文,描述你初中生活中令你難忘的一件事。

要求:1.緊扣主題,語言流暢,書寫規(guī)范,卷面整潔,詞數(shù)不少于80; 2.文中不得使用真實(shí)姓名、校名,否則以零分記; 3.將短文寫在答題卡上,寫在本試卷上無效。

________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

查看答案和解析>>

同步練習(xí)冊答案