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If you’re concerned about climate change...

    If you’re concerned about climate change, should you feel guilty about hanging out online? Maybe not.

Data, or information, is often processed and stored on a computer. A computer that provides data to other computers is called a server. Servers also store data such as videos, pictures and emails. A building that holds many servers is known as a data center. Without data centers and servers, we could not access websites on our own computers and phones every day.

Some people worry that data centers use a lot of energy, which could be bad for the environment. But recent studies found that data centers do not use as much energy as they thought.

Eric Masanet, a professor at Northwestern University, is the study’s main author. Masanet and his team looked at the energy used by data centers around the world, and found that data centers have improved. They saw a 20 percent energy improvement each year.

These improvements are due to better servers. They use less energy than servers once did. Other technologies have also improved.

Masanet said to make sure computers use energy effectively, some things need to happen. Businesses and governments should get involved. Countries need to be open about how much electricity their data centers use. Large data companies also need to source their electricity from renewable energy, such as sunlight and wind. For example, Google and Apple both purchased or generated enough renewable electricity to match 100 percent of their data center energy use in 2018.

“People should care about the energy data centers need,” said Masanet. “But we don’t have to feel bad about staying connected.”

1.Why do people need data centers?

A.To help people reduce time on computers.

B.To store information and let them use websites.

C.To provide energy needed to run people’s phones.

D.To save data on the Internet instead of on servers

2.What caused data centers to have a 20 percent improvement in energy use?

A.Less fuel is being burned in the atmosphere. B.Fewer people are online at the same time.

C.Servers and technologies have improved. D.More information is stored in phones.

3.What does the underlined word “source” in paragraph 6 mean?

A.Measure. B.Store. C.Choose. D.Obtain.

4.According to Eric Masanet, how to make sure computers use energy effectively?

A.Businesses and governments should be involved. B.The boundaries of countries should be opened.

C.People need to spend less time online. D.People need to rely on big data companies.

 

1.B 2.C 3.D 4.A 【解析】 这是一篇说明文。文章主要介绍了人们需要数据中心来储存信息,让他们使用网站,但有些人担心数据中心消耗大量能源,这可能对环境有害。但最近的研究发现,数据中心使用的能源并不像他们想象的那么多。这是因为更好的服务器和技术的改进。研究人员还认为企业和政府应该参与进来,大型数据公司需要使用可再生能源来获得电力。 1. 细节理解题。根据第二段中Servers also store data such as videos, pictures and emails. A building that holds many servers is known as a data center. Without data centers and servers, we could not access websites on our own computers and phones every day.可知服务器还存储视频、图片和电子邮件等数据。拥有许多服务器的建筑被称为数据中心。没有数据中心和服务器,我们无法每天通过自己的电脑和手机访问网站。由此可知,人们需要数据中心的原因是,人们需要数据中心来储存信息,让他们使用网站。故选B。 2. 细节理解题。根据第四段中Masanet and his team looked at the energy used by data centers around the world, and found that data centers have improved. They saw a 20 percent energy improvement each year.可知Masanet和他的团队研究了世界各地数据中心的能源使用情况,发现数据中心的能源使用情况有所改善。他们看到每年20%的能源改善。以及第五段These improvements are due to better servers. They use less energy than servers once did. Other technologies have also improved.可知这些改进归功于更好的服务器。它们比以前的服务器使用更少的能源。其他技术也得到了改进。由此可知,是服务器和技术得到了改进,使数据中心的能源使用提高了20% 。故选C。 3. 词义猜测题。根据后文their electricity from renewable energy, such as sunlight and wind可知大型数据公司还需要从太阳能和风能等可再生能源中获得电力。由此可知,划线单词意思为“获得”。A. Measure.测量;B. Store.储存;C. Choose.选择;D. Obtain.获得。故选D。 4. 细节理解题。根据倒数第二段中Masanet said to make sure computers use energy effectively, some things need to happen. Businesses and governments should get involved.可知Masanet说,要确保电脑有效利用能源,需要做一些事情。企业和政府应该参与进来。由此可知,Eric Masanet认为,要确保电脑有效地利用能源,企业和政府应该参与。故选A。
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    If you want your life to stand for peace and kindness, it’s helpful to do kind, peaceful things. One of my favorite ways to do this is by developing my own helping actions. These little acts of kindness are opportunities to be of service and reminders of how good it feels to be kind and helpful.

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A helping action that I practice regularly with my two children is picking up litter in our surrounding area. We’ve become so used to doing this that my daughters will often say to me in exciting voices, “There’s some litter, Daddy, stop the car!” And if we have time, we will often pull over and pick it up. It may seem strange, but we actually enjoy it. We pick up litter in parks, on sidewalks, practically anywhere. Once I even saw a complete stranger picking up litter close to where we live. He smiled at me and said, “I saw you doing it, and it seemed like a good idea.”

Picking up litter is only one of endless supplies of possible helping actions. You might like holding a door open for people, visiting lonely elderly people in nursing homes, or removing snow off someone else’s driveway. Think of something that seems effortless yet helpful .It’s fun, personally rewarding, and sets a good example. Everyone wins.

1.What does the author think of developing helping actions?

A.It helps us to be winners. B.It is very difficult.

C.It requires lots of effort. D.It makes us feel good about ourselves.

2.What do we know about the area where the author lives?

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C.It’s very easy to find litter collection. D.Few people drive on the rural roads.

3.How does the author support his own opinion?

A.By sharing his own experience. B.By listing reasons for giving help.

C.By explaining different methods to be helpful. D.By making a comparison with others.

4.What does the author mainly want to tell us?

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C.Small kind acts make the world a better place. D.Protecting the environment will benefit all of us.

 

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    Last semester in my final year of high school, I had Mr. Smith as my teacher, a teacher that I can never forget.

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