China’s Tianhe-1 has a computing speed of 2,507 trillion（萬億）calculations a second, making it the fastest computer in the world．It is also 40 percent faster than the world’s second fastest supercomputer, Cray XT5 Jaguar, in the US, kept at a national laboratory in Tennessee, according to the New York Times．Jack Dongarra, a University of Tennessee computer scientist, told NYT that the Chinese supercomputer is faster than the existing Number One machine.

Building the fastest supercomputer has become a source of national pride, as these machines are valued for their ability to solve problems in areas like defense, energy and science．These problems are related to national interests．Supercomputing technology is also found in business．Oil and gas companies use supercomputers to find oil and gas．

Obviously, research centers with large supercomputers attract top scientific talents．This adds extra importance to the machines—they’re more than just huge computers．

China’s new supercomputer will be used to speed up greatly scientific calculations, such as hurricane and tsunami modeling, cancer research, car design and even studying stars.

In 2008, two US scientists put together a step-by-step guide on how to build a supercomputer using PlayStation 3 video-game consoles（控制臺(tái)）．Modern supercomputers are built by combining thousands of small computer servers（服務(wù)器）and using software to turn them into one large computer．Really, any organization with enough material and technology can create a fast machine．

The Chinese system follows that model by linking thousands upon thousands of computer servers．But the secret behind the system—and the technological achievement—is China’s own networking technology．“That technology was built by them,” Dongarra said．“They are taking supercomputing very seriously and using a lot of time and money.”

“China is still a developing country,” said Sha Chaoqun, manager at Dawning Company which is the leading supercomputer maker in China．“Maybe one day, China’s total computing power can be greater than that of the US, but there is still a long way to go before we get there.”

Paragraph outline

Supporting details

China has developed the world’s fastest supercomputer

Tianhe-1 has a high computing speed, which 1.it the fastest computer in the world.

Tianhe-1 is 40 percent faster than the 2.fastest supercomputer in the world.

3.Jack Dongarra, we learn that the Chinese supercomputer is faster than existing Number One machine.

Many countries see the fastest supercomputer as a source of national 4.and are making efforts to develop it.

The high-speed computer is 5.to solve problems relaterd to national interests.

Besides 6.of defense, energy and science, supercomputing technology can also be found in business, oil and gas companies.

It’s obvious that top scientific talents are 7.to research centers with large supercomputers.

The secret behind supercomputers is networking technology

By using the technology built by Chinese people, taking it 8.and devoting lots of time and money, China has achieved a lot

Mr.Sha showed a conservative （保守的）9.toward the development of computing power.

10.the greater computing power China may have in the future, there is still a long way to go.

練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目：高中英語 來源：2016屆山東省臨沂市高三上學(xué)期期中考試英語試卷（解析版） 題型：完形填空

完形填空（共1小題）

閱讀下面短文，從短文后各題所給的四個(gè)選項(xiàng)(A、B、C和D)中，選出可以填入空白處的最佳選項(xiàng)，并在答題卡上將該項(xiàng)涂黑。

Feb．5 was a bad day for me．My doctor ________me and my parents that I had ________ cancer and that I had only a few months to live．I became so sad that I immediately ________ .

Now I am actually ________ for all that has happened to me．I realize I would have never had to reflect and rethink about the purpose of my ________ if I had never been so close to ________·

Had I not been ________to this limit，I would not have developed a deep ________of the beautiful gift of life and of everything around me．I also would not have thought about how I wanted to ________the people around me in a positive way before leaving the world．

This is no ________ ；I don’t even think it is sad in the ________ way to be honest．I’ve been so ________in my life．I’ve lived in Paris，served the Peace Corps in Peru，fallen madly in love with the most ________ girl，have the most fantastic ________ and friends anyone could ever ask for…and the ________just goes on．

I ________believe everything happens for a reason．If terminal cancer had not ________ to me，I would not have been able to ________ my closest friends and family to appreciate the beautiful gift of life a little more and live more appreciative and ________ lives with my story．This is the purpose of my life I had been ________all of my life．In fact，that is the reason I’ve decided to write this article and go public with my story as well．It is also the reason why I am，after all that I’ve been through in the past few months，thankful for terminal cancer．

1.A．inspected B．informed C．insulted D．interviewed

2.A．typical B．sensible C．supreme D．terminal

3.A．cried B．burst C．barked D．numbed

4.A．cheerful B．scared C．grateful D．glad

5.A．1ife B．soul C．faith D．growth

6.A．burden B．chaos C．creed D．death

7.A．hooked B．pushed C．dragged D．marched

8.A．gratitude B．perseverance C．a(chǎn)ppreciation D．romance

9.A．seize B．a(chǎn)ffect C．flatter D．dominate

10.A．target B．tolerance C．mercy D．tragedy

11.A．slightest B．highest C．farthest D．1ongest

12.A．excited B．blessed C．interested D．declined

13.A．exotic B．courageous C．sensitive D．a(chǎn)mazing

14.A．a(chǎn)uthor B．a(chǎn)cquaintance C．family D．citizen

15.A．deed B．1ist C．doom D．scene

16.A．strongly B．decently C．generally D．a(chǎn)pproximately

17.A．belonged B．a(chǎn)ttached C．happened D．a(chǎn)ppealed

18.A．inspire B．suggest C．command D．demand

19.A．negative B．objective C．subjective D．positive

20.A．searching for B．caring for C．a(chǎn)ccounting for D．a(chǎn)pplying for

查看答案和解析>>

科目：高中英語 來源：2015年黑龍江哈爾濱第三十二中學(xué)高三上期末英語試卷（解析版） 題型：閱讀理解

Although the United States covers so much land and the land produces far more food than the present population needs，its people are by now almost entirely an urban society Less than a tenth of the people are engaged in agriculture and forestry(林業(yè))，and most of the rest live in or around towns，small and large．Here the traditional picture is changing：every small town may still be very like other small towns，and the typical small town may represent a widely accepted view of the country，but most Americans do not live in small towns any more．Half the population now lives in some thirty metropolitan areas(1arge cities with their suburbs、of more than a million people each—a larger proportion than in Germany or England，let alone France．The statistics(統(tǒng)計(jì))of urban and rural population should be treated with caution because so many people who live in areas classified as rural travel by car to work in a nearby town each day．As the rush to live out of town continues．rural areas within reach of towns are gradually filled with houses，so that it is hard to say at what moment a piece of country becomes a suburb But more and more the typical American lives in a metropolitan rather than a small town environment．

1.If now America has 250 million people．how many of them are engaged in agriculture and forestry?

A．About 25 million.

B．More than 25 million.

C．Less than 25 million.

D．Less than 225 million

2.Which of the following four countries has the smallest proportion of people living in metropolitan areas?

A．United States.

B．Germany.

C．France.

D．England.

3.What’s the meaning of the word“metropolitan”in the middle of the passage?

A．Of a large city with its suburbs.

B．Of small and large towns.

C．Of urban areas.

D．Of rural areas.

4.According to the passage，what can we learn about small towns in the United States?

A．Most small towns become gradually crowded.

B．Small towns are still similar to each other.

C．As the traditional picture is changing，towns are different.

D．Small towns are turning into large cities.

查看答案和解析>>

科目：高中英語 來源：2015-2016學(xué)年山東蒙陰一中高二學(xué)優(yōu)班10月模塊測(cè)試英語試卷（解析版） 題型：閱讀理解

Welcome to the Electronic Village to explore new ways of language teaching and learning．

Electronic Village Program(Thursday,June 18,2015)

Nearpod

·9:00 am to 10:00 am

·Room 501

Nearpod is a software program that creates a rich context(語境)for students to learn vocabulary． The presenter will show how to use it．

TEO

·2:00 pm to 3:00 pm

·Room 502

Our students come from different backgrounds but have the same desire to learn on-line． The presenter will use examples from his first on-line class to explain how any teacher can begin teaching on-line with TEO．

Kahoot

·10:30 am to 11:30 am

·Room 601

Kahoot software can be used to create grammar tests which can be graded on a network． It can provide students with instant feedback(反饋),including reports about their strengths and weaknesses．

Prezi

·3:30 pm to 4:20 pm

·Room 602

Uses of Prezi in listening and speaking courses draw students’attention to speaking more fluently． The presenter will show how students can use Prezi to confidently present on a variety of topics,including introducing family,friends,and hobbies．

1.Nearpod can be used to ．

A． offer grammar tests

B． teach listening on-line

C． help vocabulary learning

D． gain fluency in speaking

2.If you want to improve your speaking skills,you can go to ．

A． Room 501

B． Room 502

C． Room 601

D． Room 602

3.Which of the following can assess your grammar learning?

A． Nearpod．

B． Kahoot．

C． TEO．

D． Prezi．

4.A teacher who wants to learn on-line teaching is expected to arrive by ．

A． 9:00 am

B． 10:30 am

C． 2:00 pm

D． 3:30 pm

查看答案和解析>>

科目：高中英語 來源：2016屆江西南昌市高三上學(xué)期第三次考試英語試卷（解析版） 題型：書面表達(dá)

假設(shè)你叫李華，你的澳大利亞朋友 Peter 來信談了他最喜愛的體育運(yùn)動(dòng)，并希望了解你喜愛的體育運(yùn)動(dòng)。請(qǐng)根據(jù)以下提示用英語寫一封回信。 要點(diǎn)如下：

1. 感謝Peter 的來信；

2. 最喜歡的運(yùn)動(dòng)是什么；

3. 為什么喜歡這項(xiàng)運(yùn)動(dòng)。

4. 運(yùn)動(dòng)給你帶來什么好處。。

注意： 詞數(shù)120。

Dear Peter,

______________________________________________________________________________

______________________________________________________________________________

______________________________________________________________________________

______________________________________________________________________________

______________________________________________________________________________

______________________________________________________________________________

Yours faithfully

Li Hua

查看答案和解析>>

科目：高中英語 來源：2015-2016學(xué)年江蘇射陽第二中學(xué)高二上學(xué)期第一次月考英語試卷（解析版） 題型：單項(xiàng)填空

This special school accepts all disabled students, _____ educational level and background.（ ）

A．a(chǎn)ccording to B．a(chǎn)s a consequence of

C．in addition to D．regardless of

查看答案和解析>>

科目：高中英語 來源：2014-2015學(xué)年江蘇南京鹽城兩市高三一模考試英語試卷（解析版） 題型：閱讀理解

Mum，it’s me．Hopefully，this Mothering Sunday you will get to hear those three words．I will，of course，try to phone you．I hope we will be able to speak for the allowed 10 minutes．But I suspect many inmates will be using the phone，so if I don’t call and if we don’t speak，then this is what I would have said：

It’s not your fault that I am here．I know that deep in your heart you have questioned whether my current circumstance is somehow your fault，if the reckless stupidity of my past is somehow a failure on your part．It is not．Only one person is to blame，only one person should hurt — me．You have always taught me that when the room goes dark，you can wait for the lights to be switched back on or you can search in the dark and turn the light on yourself．You are my light．You always have been and always will be．There is nobody I admire more，nobody I have strived harder to please in my life，which is why my current failure hurts me so much．

I am so sorry that I will not be there to see you，but I want you to know that now，as always，you are here with me．In my darkest hours，and in the coldest loneliness of my past few months，my mind has so often wandered to the past，to when it was you and me — and I have been able to smile．Yours is the strength that I draw upon．

A parent’s job is to make sure that they pass on the best of themselves to their children．You have done that．It is the inner you in me that will get me through this．

I have failed you so epically，but you have never failed me．If I think back to the tears I shed when Dad left，all those years ago，I see you through their misty glaze．You holding me and you telling me we’d be OK，and we will be．We are and always will be the best team．

Childhood heroes such as footballers，actors and rock stars are clichéd． If the job’s done right，a child’s heroes should be their parents — you are mine．The strength you showed after the divorce from Dad to find your biological parents，to go to university and get your teaching qualifications，to begin your life again，is the strength that I draw on now．It is the belief in myself，it is the belief you have in me，that tells me that once I am released I can and will rebuild my life．I will make you proud again．I will make you happy to have me as your son．Yours is the will that gets me through every day．

I don’t believe you can judge a person for the mistakes they make，as we all make them，but you can judge them for what they do afterwards．And after this，when it is all over，you will still have a son with the same hopes and dreams．They have not diminished． If you can dream it，then you have to believe it can happen — right？

So this Mothering Sunday，please think back to that morning in the 80s，the first Mother’s Day without Dad，when a six year old me got up early and made breakfast for you．Do you remember it？Could you ever forget？A slice of bread a doorstep thick and a wedge of cheese equally dense．You didn’t have to eat it，but you did，chewing every dry mouthful．I know now why you forced yourself — because it had been made with love．Well，things don’t change this year — this letter is that bread and cheese (it sure has plenty of the cheese！)．

I love you so much．I am sorry I have let you down，but you have taught me that we will always pick ourselves up and become better than we were before．Thank you for everything and this year，more than ever：

Happy Mothering Sunday．

Love，your son

1.According to the passage，what made the author most upset at present？

A． Losing his freedom temporarily．

B． Being unable to phone his mother．

C． Failing to live up to his mother’s expectations．

D． Having no chance to spend the weekend with mother．

2.What does the underlined word “this” in Paragraph 4 refer to？

A． Mothering Sunday

B． Dark time

C． His mistake

D． Near future

3.What does the underlined word “this” in Paragraph 4 refer to？

What did the author do in the loneliness of his past months？

A． He summed up the causes of the failure in his life．

B． He planned to help his mother find her birth parents．

C． He recalled the fond memories of being with his mother．

D． He prepared himself to go to university for further studies．

4.What does the underlined word “this” in Paragraph 4 refer to？

Which of the following is closest in meaning to the underlined word “clichéd” in Paragraph 6？

A． Ridiculous

B． Liberal

C． Explicit

D． Common

5.What does the underlined word “this” in Paragraph 4 refer to？

Which of the following can best describe the author’s mother？

A． Selfless but stubborn

B． Guilty but determined

C． Selfish but responsible

D． Caring but envious

查看答案和解析>>

科目：高中英語 來源：2016屆湖北省高三上學(xué)期12月月考英語試（解析版） 題型：閱讀理解

閱讀下列短文，從每題所給的四個(gè)選項(xiàng)（A、B、C和D）中，選出最佳選項(xiàng)。

Welcome to the Electronic Village to explore new ways of language teaching and learning.

Electronic Village Program (Thursday, June 18,2015)

Nearpod

◇ 9:00 am to 10:00 am

◇ Room 501

Nearpod is a software program that creates a rich context(語境) for students to learn vocabulary. The presenter will show how to use it.

TEO

◇ 2:00 pm to 3:00 pm

◇ Room 502

Our students come from different backgrounds but have the same desire to learn on-line. The presenter will use examples from his first on-line class to explain how any teacher can begin teaching on-line with TEO.

Kahoot

◇ 10:30 am to 11:00 am

◇ Room 601

Kahoot software can be used to create grammar tests which can be graded on a network. It can provide students with instant feedback(反饋), including reports about their strengths and weaknesses.

Prezi

◇ 3:00 pm to 4:20 pm

◇ Room 602

Uses of Prezi in listening and speaking courses draw students’ attention to speaking more fluently. The presenter will show how students can use Prezi to confidently present on a variety of topics, including introducing family, friends, and hobbies.

1.Nearpod can be used to .

A. offer grammar tests

B. teach listening on-line

C. help vocabulary learning

D. gain fluency in speaking

2.If you want to improve your speaking skills, you can go to .

A. Room 501 B. Room 502

C. Room 601 D. Room 602

3.Which of the following can assess your grammar learning?

A. Nearpod. B. Kahoot.

C. TEO. D. Prezi.

4.A teacher who wants to learn on-line teaching is expected to arrive by .

A. 9:00 am B. 10:30 am

C. 2:00 pm D. 3:30 pm

查看答案和解析>>

科目：高中英語 來源：2015-2016學(xué)年四川綿陽南山中學(xué)高二上學(xué)期期中英語試卷（解析版） 題型：語法填空

閱讀下面材料，在空白處填入適當(dāng)?shù)膬?nèi)容（1個(gè)單詞）或括號(hào)內(nèi)單詞的正確形式。將答案寫在答題卡的相應(yīng)位置。

Timoteo Apaza is a gentle 46-year-old man, living in a village near the most dangerous part of the road, known locally 1. the Devil’s Bend. The roads are in bad condition and accidents are frequent. But thanks to Timoteo, who works as a human traffic signal, the death toll 2. (fall) so far. Apaza had been a miner and a soldier, and then one day he was working as a lorry driver he had a close encounter with death. He was driving a lorry load of bananas 3. he came off the road and fell three hundred metres down the mountain. Fortunately, he survived. A few years later, he was called in the night to help pull people out of a crashed bus. From then on, he felt that 4. was his mission in life to help others. So every morning, week in week out, from dawn to dusk, he takes up his place on the bend and directs the traffic. He is a volunteer and no one pays him for it. Sometimes drivers give him a tip, so that he has just enough money to live on. But often they just pass by, 5. (take) the human traffic signal for granted.

查看答案和解析>>

同步練習(xí)冊(cè)答案