When a computer works on a group of programs, it can get very hot. Cooling the computer can cost a lot. So some scientists wonder what would happen if the heat from the computer could be used.

Large Internet companies (公司) such as Google and Microsoft have thousands of computers. As these computers deal with information, they produce lots of heat, so they need huge cooling systems (系統(tǒng)). These systems send the heat into the air.

A company in Holland (荷蘭) thinks paying to make the computers work and then paying again to cool them are a waste of energy. So the company developed a special device—the e-Radiator.

Boaz Leupe, head of the company, says that e-Radiator works as a heating system and saves money. He explains that the energy is used twice—once to heat the home and once to cool the computer and that the users don’t have to pay to cool their computers.

Five homeowners in Holland are testing the heating system in their homes.

“We pay for the computer using, so, in that way, homeowners get heating for free,”Boaz says.

Jan Visser is one of the homeowners. “If you use the computer more, the e-Radiator producers more heat, ”he says, “It cannot provide enough heat if you don’t use your computer often.” But he is ready to try it. It’s a great help for his family.

The company says e-Radiators produce heat temperatures of up to 55℃. It says the system could save its users about $440 a year.

1.Before the e-Radiator appears, usually the heat of a computer ______.

A．is sent into the air

B．helps the five homeowners

C．is used twice

D．makes the computer work better

2.The e-radiator is mainly used _____.

A．to drive the computer

B．to help Microsoft

C．to heat the computer

D．to provide heat

3.The Chinese meaning of the word “device” in this passage is probably “____”.

A．節(jié)能

B．實驗

C．儀器

D．開關(guān)

4.The best title of the passage may be “_____”.

A．An Environment Problem

B．A New Way to Heat Homes

C．The Future Computers

D．The Energy to Be Wasted

練習(xí)冊系列答案
相關(guān)習(xí)題

科目：初中英語 來源：2015-2016學(xué)年江蘇揚州邗江美琪學(xué)校七年級上學(xué)期期中英語試卷（解析版） 題型：單項填空

—Lily, _________ apple on the table is for you.

—Thanks, Mum. _________apple a day is good for us.

A. the; An B. an; An

C. an; The D. the; The

查看答案和解析>>

科目：初中英語 來源：2015-2016學(xué)年江蘇泰興洋思中學(xué)七年級上學(xué)期期中考試英語試卷（解析版） 題型：補充句子

用所給詞的適當形式填空。

1.How many______________(library)are there in your school?

2.The____________(parent) meeting begins at two o’clock in the afternoon.

3.He doesn’t have much time___________(play)football.

4.Our classroom is big. What about___________(they) ?

5.They knock on___________(people) doors and shout ‘trick or treat’.

6.It takes Mum an hour____________(cook) every day.

7.We practice_____________(speak)English every day.

8.Jim is one of the best basketball_____________(play).

9.There’s a big hall on the_______________(one) floor.

10.They often have_________________(meet) in the school hall..

查看答案和解析>>

科目：初中英語 來源：2016年北京市通州區(qū)九年級上學(xué)期期末考試英語試卷（解析版） 題型：完形填空

完形填空（共1小題）

閱讀下面的短文，掌握其大意，然后從短文后各題所給的A、B、C、D四個選項中，選擇最佳選項。A Little Coaching (指導(dǎo))

I always felt nervous at the running race. I was too thin to be an athlete. So when our class needed a ________ in the two mile race around the lake, I hoped nobody would notice me.

I hid under a ________ when our teacher Bronto called the names of the runners. I got more nervous when I heard he called, “Noah! Where’s Noah? He’s in this race!”

He saw me under the tree and shouted, “Noah, we ________ a boy to run the two mile race.” He pushed me to the starting line(線). I pleaded(懇求) with him. “I don’t know the way around the lake!”

“It’s not a problem. Just ________ Craig and you’ll know the way.” Bronto smiled. Craig was the fastest runner in our class. Then Bronto said, “For the last hundred meters, just throw your head back and run.”

I stood next to Craig and trembled(顫抖). Then I heard the gun and sixteen of us started to run. I ran closely behind Craig.

But gradually(逐步地), the distance(距離) between Craig and me became wider.

It was ________ . I felt very tired. My energy was spent. I was about to give up. But then I looked ahead(向前) and ________ only three boys were in front of me. The crowd was shouting, but I could hear Bronto shouting, “Run!”

I threw my head back and told my legs to go. I never looked ahead and I never looked back for those last hundred meters. I felt ________ . Nobody was telling me what I was, or what I wasn’t. My legs were running a race against my brain and I was winning!

I didn’t know when I crossed the finish line. Bronto caught me and shouted, “You flew! You flew, man! ________! You passed two boys!”

However, the best prize that I got was ________. That year I discovered I could do a lot of things if I believe myself and put my energy into them.

I never got to say ________ to Bronto right after the race. But later, I saw him over the lake. He was coaching another kid. I had no doubt that the kid was also going to win.

1.A．runner B．jumper C．swimmer D．diver

2.A．desk B．tree C．bed D．chair

3.A．get B．teach C．help D．need

4.A．forget B．beat C．follow D．trust

5.A．surprising B．difficult C．boring D．wonderful

6.A．saw B．heard C．guessed D．remembered

7.A．nervous B．tired C．free D．lucky

8.A．First B．Second C．Third D．Fourth

9.A．love B．respect C．teamwork D．confidence

10.A．goodbye B．sorry C．thanks D．Welcome

查看答案和解析>>

科目：初中英語 來源：2016年北京市朝陽區(qū)九年級上學(xué)期期末考試英語試卷（解析版） 題型：書面表達

書面表達

假如你叫王輝，最近和你的美國朋友Mike通過郵件談?wù)摳髯缘膶W(xué)校生活。他知道你們學(xué)校組織了很多社會實踐活動，他想了解你最難忘的一次社會實踐活動。請你根據(jù)Mike的問題，給他寫一封郵件，告訴他你去哪了，做了什么,以及你的感受。

提示詞語：visit, find something new, do experiments, happy, out of the books

查看答案和解析>>

科目：初中英語 來源：2015-2016學(xué)年江蘇蘇州八年級英語上學(xué)期期末模擬試卷（解析版） 題型：閱讀理解

閱讀短文，從每題所給的四個選項（A、B、C和D）中，選出最佳選項。Some people think only school children do not agree with their parents, however, it is not true.

Communication is a problem for parents and children of all ages. If it’s hard for you to communicate with your parents, don’t worry about it. Here are some advice for you to bridge the generation gap (消除代溝).

Don’t argue (爭辯) with your parents. Don’t get to your parents when you are angry. Your parents probably won’t consider your ideas if you are shouting at them. And you can’t express yourself well if you are angry. Go to someplace to cool off. Make sure you understand why you are unhappy. Then think about what you want to say to your parents. If you don’t think you can speak to them at the moment, try writing a letter.

Try to reach a compromise (和解). Perhaps you and your parents disagree on something. You can keep your disagreement and try your best to accept each other. Michael’s mother didn’t agree with him about buying a motorcycle. They argued over it. But they finally came to a compromise. Michael bought the motorcycle, but only drove it on certain days.

Of course, your parents might refuse to compromise on something. In these situations, it is especially important to show love and respect (尊敬) to them. Showing respect will keep your relationship strong.

Talk about your values. The values of your parents are probably different from those of your own. Tell your parents what you care about, and why. Understanding your values might help them see your purposes in life.

A good relationship with your parents can make you a better and happier person. It is worth having a try!

1.The passage tells us _______ have a communication problem.

A．parents and other people
B．school kids and their parents
C．teachers and their students
D．parents and children of all ages
2.Your parents probably won’t consider your ideas if you _______.

A．don’t get to them often
B．write a letter to them
C．don’t speak to them politely
D．express yourself well
3.The underlined phrase “cool off” in the passage means “_______”.

A．to make yourself happy
B．to get you quiet and relaxed
C．to have a good rest
D．to hide yourself quickly
4.If there’s really a generation gap between you and your parents, you’d better ____.

A．have a talk with them often
B．keep away from them
C．a(chǎn)gree with them all the time
D．know about their values
5.From the passage we learn that _______.

A．parents and children should not have a generation gap
B．parents should show love and respect to their children
C．there are some good ways to bridge the generation gap
D．there are so many serious problems in families today

查看答案和解析>>

科目：初中英語 來源：2015-2016學(xué)年黑龍江工業(yè)大學(xué)附中八年級英語上期末模擬試卷（解析版） 題型：單項填空

Listening is the most important skills in learning English. In order to improve our listening, we should _______.

Listen to the English tapes or CDs when we have time

Watch English movies once a week

Talk to foreigners and listen to their replies carefully

Listen to the teacher in class carefully and we needn’t listen to our classmates when they are speaking.

Stay up late to listen to English materials every day.

A．(1)(2)(3)

B．(1)(3)(5)

C．(2)(4)(5)

查看答案和解析>>

科目：初中英語 來源：2015-2016學(xué)年江蘇射陽外國語學(xué)校七年級上學(xué)期期中英語試卷（解析版） 題型：補充句子

完成句子，每空一詞。

1.從圖書館到操場是很長一段路。

______ a long _____ from the library to the playground.

2.湯姆帶你參觀一下學(xué)校。

Tom _______ you _________ the school.

3.我們每天早上9:00做早操。

We do _________ __________ at 9:00 every morning.

4.祝我們班好運！

______ our class good ______ !

5.我在她家時，她媽媽經(jīng)常用蘋果款待我。

When I am at her home, her mother often _______ me apples as a ________.

查看答案和解析>>

科目：初中英語 來源：2015-2016學(xué)年江蘇射陽特庸中學(xué)射陽六中八年級上聯(lián)考2英語試卷（解析版） 題型：閱讀理解

Do you think of white when someone talks about a polar bear? In fact, the polar（北極） bear does not have white fur. It just appears to be white. Polar bears have a very good sense of smell. It helps them to find food. During summer, polar bears sleep longer, because they are able to find their food more easily at night. Usually, after a meal, polar bears have a short sleep. A polar bear can have 2-3 babies at a time. They live with their mothers until they are about two-and-a-half years old.

However, polar bears will die out soon because of people. There are only 20,000 to 25,000 polar bears in the world. The ones that are left are trying to survive today. The number of polar bears is becoming smaller and smaller because of the loss of sea ice— polar bears mostly inhabit (居住于) the sea ice, not the land ice. This is happening because of global warming (全球氣候變暖), pollution, hunting and so on.

Ordinary people don't care, but great people have the power and want to save tigers, fight for giant pandas and save polar bears. Ordinary people will wait, but great people will find a new world. For me, I will not waiting. I will take the bus more often from now on. Join me and save the polar bears, and, of course, the tigers, the giant pandas and...

1.According to the passage, which of these an swers does NOT make sea ice less?

A. Global warming. B. Pollution.

C. Hunting. D. Travelling.

2.What can we learn from the passage?

A. Polar bear fur is white.

B. Perhaps the writer will drive his car less.

C. It's harder for polar bears to find food in summer.

D. Polar bears left have a good, happy life.

3.What does the word "ordinary" mean in Chinese?

A. 勤勞的 B. 聰慧的 C. 普通的 D. 堅強的

4.What is the main idea of this passage?

A. To show that the number of polar bears is getting smaller.

B. To tell people that polar bears will soon have nowhere to live.

C. To let people know why polar bears are in danger.

D. To talk about polar bears and suggest that people protect animals.

5.Where can this passage come from?

A. A magazine about animals.

B. A book about greetings.

C. A poster about working plans.

D. An instruction book.

查看答案和解析>>

同步練習(xí)冊答案