When computer servers operate a complex program, they can get very hot. Cooling the servers can be costly. So researchers asked what would happen if the heat created by the servers could be captured and used?

Data centers of large Internet companies such as Google and Microsoft have thousands of computer servers. As these servers process information, they create large amounts of heat, so they need huge cooling systems, which send the heat into the air.

The Dutch company Nerdalize thinks paying for electricity to operate the servers and then paying again to cool them is a waste of energy. So it developed a device called the e-Radiator, a computer server that also works as a heating source.

Boaz Leupe, the chief executive officer of Nerdalize, says the e-Radiator saves money because companies don’t have to pay to cool their servers. “…The kilowatt hour you are using is used twice — once to heat the home and once to compute the client’s task without the cooling expenses.”

At present five homeowners in the Netherlands are testing the heating device in their homes.

“We compensate the electricity the server uses, and that we can do because of the computer clients on the other side, and, in that way, homeowners actually get heating for free, and computer users don’t have to pay for the expenses of the data center.”

Jan Visser is one of the participants in the year-long experiment. He notices that the amount of heat produced by the e-Radiator depends on the work being done by the computer server. He reveals it cannot be used as the primary source of heat. But he is ready to try it. “If it provides enough warmth, I will be able to use my home’s heating system less, which will save me money.” he added.

Nerdalize says e-Radiators create heat temperatures of up to 55 degrees Celsius. It’s also said that the devices could save users up to $440 in heating costs a year.

1.What can we learn from this passage?

A. E-Radiator can save homeowners a big sum of money in cooling the computers.

B. Google and Nerdalize developed the heating device, e-Radiator.

C. E-Radiator has been put into use in the Netherlands.

D. The heating device will benefit computer users as well as homeowners.

2.According to the passage, what’s Jan Visser’s attitude towards e-Radiator?

A. Cautious. B. Positive. C. Satisfied. D. Doubtful.

3.Where can we most probably read the passage?

A. In an economic report.

B. In a science magazine.

C. In an education newspaper.

D. In a computer guide book.

4.Which of the following can be the best title for the passage?

A. Money-saving heating device.

B. E-Radiator, the primary source of heat.

C. Hot computers could be used to heat home.

D. Nerdalize developed e-Radiator, a heating system.

練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目：高中英語 來源：2015-2016學(xué)年吉林長(zhǎng)春市高一上學(xué)期第三次月考英語試卷（解析版） 題型：單項(xiàng)填空

When he was out of ___work, he was involved in crimes of violence and was put in ___ prison at last.

A. the; the B./; / C. a; / D. /; the[

查看答案和解析>>

科目：高中英語 來源：2016屆山西省高三上學(xué)期期中考前檢測(cè)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。

On June 2，2012，Meghan Vogel won the state championship in the 1500-meter race．1. ，it was her last-place finish in the 3200 meters that won her worldwide attention．

Only a few minutes2. the 3000-meter run，Meghan entered the tough 3200-meter final．Three laps in to the eight-lap race，Vogel was falling off the pace．It could easily be seen that she didn’t have the energy to compete for another title．20 feet from the finish line，she was in last place but still had3. chance of passing a runner from another schoo1—Arden McMath，4. was faltering(蹣跚)．

Then suddenly Arden McMath5. (fall)to the track．Vogel never had a moment of doubt about6. to do next．Rather than run past her fallen competitor to avoid the last-place finish，Vogel stopped to help Arden to her feet and7. support) her step by step towards the finish line．The crowd cheered for Vogel’s action and the cheers grew8. (loud) as the two girls finished the race with Vogel purposely9. (make)sure that Arden crossed the finish line ahead of her．

Last place on the track；first place in sportsmanship(體育精神)．Vogel was truly the10. (win) of the 3,200-meter race·

查看答案和解析>>

科目：高中英語 來源：2015-2016學(xué)年吉林長(zhǎng)春市高一上學(xué)期第三次月考英語試卷（解析版） 題型：閱讀理解

Like human beings, dogs may catch cold because of cold weather, wet conditions or can also get it from other sick dogs. If a dog has a running nose and watery eyes, coughs or sneezes(打噴嚏）, then it is quite probable that the dog has caught cold.

A dog's cold can get over after a few days without treatment but it totally depends upon the owner to treat it with medications or improve its immune power（免疫力）to get rid of the cold naturally. Following are some of the things you can do if your dog gets a cold.

You can improve its immune power by giving it proper nutrient diet. Healthy food can really do wonders. Try to give it food which is either suggested by the vet（獸醫(yī)）or is healthy for your pet. Increase the intake of food which is rich in vitamins A, C and E.

Keep your dog warm. The best place for your dog in winter is inside your house. Do not keep your dog outside when it is cold and wet. At home you can also keep the dog warm with the help of carpets. This will make him comfortable and help him to recover fast.

Increase the fluid（流質(zhì)）intake as it helps a lot. Water can be the best choice but you can also add broth（肉湯）in water which will give your dog strength. Warm water will make your dog more comfortable and will also keep the dog away from the respiratory infections（呼吸道感染）.

Steam treatment is considered to be effective in getting rid of cold. It makes the nasal（鼻的）passage wet, which helps proper breathing. Just fill your bathroom with steam and leave your dog inside the bathroom for 15 minutes. Do it nearly 2 to 3 times a day and you will see your dog recovering.

These are some of the things you can do to help your dog recover from cold. However, if you are not able to find any improvement in its health, then turn to the vet for help immediately. Take your dog for regular checkups so as to avoid complications（并發(fā)癥）.

1.From the first paragraph we know about __________.

A．the difficulty in keeping a dog as a pet

B．characteristics(特征) of sick dogs

C．the similarities between dogs and human beings

D．causes and symptoms（癥狀）of cold in dogs

2.When your dog catches cold, you should feed it on _______.

A．its favorite food B．the suggested food by the vet

C．some meat and water D．food rich in vitamin B

3.When a dog catches cold, it is wrong to ________.

A．keep it inside during cold and wet weather

B．leave it inside the bathroom full of steam

C．let it eat too much solid（固體）food

D．keep it sleeping on carpets at home

4.It can be learnt from the text that _________.

A．a(chǎn) dog’s cold can always disappear naturally

B．it’s quite easy to make a sick dog recover from cold

C．treating a dog’s cold sometimes needs a vet’s help

D．cold in dogs won’t spread between each other.

查看答案和解析>>

科目：高中英語 來源：2015-2016學(xué)年河北承德市高一上學(xué)期第一次月考英語試卷（解析版） 題型：閱讀理解

I have many new teachers in high school, but Lori Runkle, my English Language and Composition teacher, is my favorite teacher.

Ms. Runkle enjoys getting to know more about students, so I have many chances to talk with her after class. I have always wanted to become a journalist (新聞?dòng)浾?. Since Ms. Runkle used to be a journalist back in the United States, she has introduced many helpful journalistic writing skills to me.

Although she is my teacher, Ms. Runkle and I are more like friends. She often invites my classmates and me to take part in different activities outdoors. For example, I went to listen to a journalist’s speech, which helped me better understand current events (時(shí)事).

Not only does Ms. Runkle talk with me outside of school, she is also a great teacher in the classroom. English Language and Composition is a really hard subject for a second language learner. We felt worried in the beginning, but Ms. Runkle really makes an effort to help us out. In class, Ms. Runkle always encourages students to question everything to keep us active. One part of class I love the most is when groups of students are requested to give speeches on events that are happening in the world. It requires a lot of deep thinking and I really learn quite a lot from it.

I love Ms. Runkle very much. She not only helps me to get good scores, but also acts as a good friend and always gives me advice on life.

1.After class, the author ____________.

A. seldom sees Ms. Runkle

B. talks with Ms. Runkle quite a lot

C. enjoys introducing Ms. Runkle to her friends

D. often invites Ms. Runkle to different activities

2.We can infer (推斷) from the passage that Ms. Runkle is ___________ .

A. friendly and helpful B. kind and humorous

C. clever and active D. strict and boring

3.The author’s favorite part of Ms. Runkle’s class is when Ms. Runkle ___________ .

A. tells them how to get good scores

B. asks them questions about the world

C. asks them to describe current events

D. tells them about events that are happening

4.What is the author’s purpose of writing this passage?

A. To express how much she misses Ms Runkle.

B. To look back on her special high school life.

C. To describe an unforgettable teacher.

D. To show what makes a good teacher.

查看答案和解析>>

科目：高中英語 來源：2015-2016學(xué)年湖南益陽市高一12月月考英語試卷（解析版） 題型：短文改錯(cuò)

短文改錯(cuò)

假定英語課上老師要求同桌之間交換修改作文, 請(qǐng)你修改你同桌寫的以下作文。文中共有10處語言錯(cuò)誤, 每句中最多有兩處。每處錯(cuò)誤僅涉及一個(gè)單詞的增加、刪除或修改。

增加: 把缺詞處加一個(gè)漏字符號(hào)(∧), 并在其下面寫出該加的詞。

刪除: 把多余的詞用斜線(\)畫掉。

修改: 在錯(cuò)的詞下畫一橫線, 并在該詞下面寫出修改后的詞。

注意: 1. 每處錯(cuò)誤及其修改均僅限一詞;

2. 只允許修改10處, 多者(從第11處起)不計(jì)分。

When I was at middle school, I have a nice classmate, which was the first foreigner I had ever met. She was friendly and very pretty. She was good in three languages, so she was born in China. It was interesting that her father was a Frenchman while her mother came from England. All of them were teaching at a university at that time. She was crazy about collect stamps, listening to pop music, as well as playing the football. Her dream was to be a engineer, so she usually studied harder to achieve it. She often told funny stories in English to make us laughing. We all liked her.

查看答案和解析>>

科目：高中英語 來源：2015-2016學(xué)年河北邢臺(tái)市高二上第二次月考英語試卷（解析版） 題型：閱讀理解

Shopping for clothes is not the same experience for a man as it is for a woman. A man goes shopping because he needs something. His purpose is settled and decided in advance. He knows what he wants, and his objective is to find it and buy it; the price is a secondary consideration. All men simply walk into a shop and ask the assistant for what they want. If the shop has it in stock, the salesman promptly produces it, and the business of trying it on goes forward at once. All being well, the deal can be and often is completed in less than five minutes, with hardly any chat and to everyone's satisfaction. For a man, slight problems may begin when the shop does not have what he wants, or does not have exactly what he wants. In that case the salesman, as the name implies, tries to sell the customer something else, he offers the nearest he can to the article required. No good salesman brings out such a substitute without least consideration; he does so with skill and polish（完美）: “I know this jacket is not the style you want, sir, but would you like to try it for size. It happens to be the color you mentioned." Few men have patience with this treatment, and the usual response is: “This is the right color and may be the right size but I should be wasting my time and yours by trying it on.

Now how does a woman go about buying clothes? In almost every respect she does so in the opposite way. Her shopping is not often based on need. She has never fully made up her mind what she wants, and she is only “having a look round". She is always open to persuasion: indeed she sets great store by what the saleswoman tells her, even by what companions tell her. She will try on any number of things. Uppermost in her mind is the thought of finding something that everyone thinks suits her. Contrary to a lot of jokes, most women have an excellent sense of value when they buy clothes. They are always on the lookout for the unexpected bargain. Faced with a roomful of dresses, a woman may easily spend an hour going from one rail to another, to and fro often retracing her steps, before selecting the dresses she wants to try on. It is a tiresome process, but apparently an enjoyable one. Most dress shops provide chairs for the waiting husbands.

1.According to the passage, a man’s shopping is based on _______.

A. his money B. his hobbies

C. his need D. his friends

2.Why does a lady welcome suggestions from anyone while buying a dress?

A. Because she wants to buy a dress that every one thinks suits her.

B. Because she doesn’t know how to buy a dress.

C. Because she doesn’t know whether to buy it or not.

D. Because she wants to show herself off in public.

3.Which of the following statements is TRUE according to the passage?

A. Most men have patience with trying it on while buying a jacket.

B. Most women have a poor sense of value when buying a dress.

C. A woman’s shopping is based on her need.

D. A man doesn’t pay much attention to the price of the clothes he wants to buy.

4.The passage mainly talks about the ______ between men shoppers and women shoppers for clothes.

A. similarities B. differences

C. varieties D. Intentions

查看答案和解析>>

科目：高中英語 來源：2016屆浙江三校等高三第一次五校聯(lián)考英語試卷（解析版） 題型：書面表達(dá)

書面表達(dá)

進(jìn)入高三以來，各個(gè)高考科目每周都增加了課時(shí)，有些同學(xué)覺得還是多些時(shí)間讓我們自己復(fù)習(xí)比較好。請(qǐng)就此寫一篇短文，發(fā)表自己的看法并說明理由。詞數(shù)：120左右。

注意：文中不能出現(xiàn)任何相關(guān)學(xué)校信息。

____________________________________________________________________________________

____________________________________________________________________________________

____________________________________________________________________________________

查看答案和解析>>

科目：高中英語 來源：2016屆江蘇省常州市兩校高三聯(lián)考英語試卷（解析版） 題型：單項(xiàng)填空

—I just can’t believe that Ella the cat has left me forever.

— ______ and cry. Don’t hold it in.

A. Don’t worry B. Go ahead

C. Forget it D. Help yourself

查看答案和解析>>

同步練習(xí)冊(cè)答案