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In the search for clean. renewable(可再生的) energy. wind power might be the perfect choice.People have been using the power of the wind for centuries.Since ancient times, wind power has been used to move ships, grind (碾谷)and so on,Around the end of the 19 thcentury, the invention of the wind turbine(涡轮机) made it possible to use Wind to produce electricity.

The first advantage of wind power is that it is a renewable resource{能源). No mater how much wind we use to produce electricity, it will never run out. Secondly, wind power i a clean resource of enery, meaning it produces electricity without harmful emissions(排 放物). Thirdly,although wind turbines can be very tall, each uses only a small piece of land. This means that the Land below can still be used.

Yet. wind energy has some disadvantages.One of the disadvantages is that the large spinning lodes(螺旋桨叶) of the wind turbines can be dangerous to birds. The second is that the turbines create noise pollution. The sound may make the people nearby uncomfortable. The third,wind can not provide a constantsupply(供应) of energy. Even the windiest places on Earth are peaceful. Without a strong wind, wind turbines are not able to produce electricity. That means wind power isn't suitable as the only resource of electricity.

Although wind energy has certain disadvantages, there is no reason why we should give up this renewable and clean resource of energy. Wind energy certainly is one of the bight hopes of our future.

(1)When did people start to use wind to produce electricity?   

A.

Several centuries ago.

B.

At the beginning of the 19 thcentury.

C.

In the mid﹣19 thcentury.

D.

At the end of the 19 thcentury.

(2)How many advantages are mentioned in this passage?   

A.

Two.

B.

Three.

C.

Five.

D.

Six.

(3)What's the main idea of the third paragraph(段)?   

A.

The advantages of wind energy.

B.

The disadvantages of wind energy.

C.

The history of wind energy.

D.

The development of wind energy.

(4)The underlined word "constant" means   in Chinese.

A.

连续的

B.

短暂的

C.

无害的

D.

一次性的

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相关试题

Have you ever studied abroad? If you come to Australia as a foreign high school student, you can have a lot of fun there, especially on holidays.
There are many festivals in Australia. The most important one is Christmas. Since it is a long holiday, most foreign students in Australia love to fly back to their home countries to spend the time with their families and friends, but a few students still stay in Australia during the holiday to get part-time jobs. It is quite easy to find a part-time job at Christmas.
Students often take part in another major social activity. They go to the beach to have fun in the sunshine. The summer in Australia is from December to February, so going to the beach in December is very popular among Australians.
Easter in March is another important holiday in the year. It actually combines "Good Friday" and "Easter Monday". Almost every shop closes on Good Friday. And people usually go to see Easter Show.
The Chinese new year is not a public holiday in Australia, so every Chinese student still has to go to school to study and do his or her normal duties.
is the most important festival in Australia.

A.Easter B.Christmas C.The Spring Festival D.New Year’s Day

Most foreign students in Australia often during the Christmas holiday.

A.get a part-time job in the restaurants
B.go to the beach to have fun in the sunshine
C.fly back to their homeland to stay with their parents
D.go to school to study

in December is very popular among Australians.

A.Skiing on an iced lake
B.Hiking in the mountains
C.Studying in a school library
D.Going to the beach to enjoy the sunshine

From the passage we can see that.

A.all the foreign students in Australia will go home during Christmas
B.people in Australia usually go to see Easter Show in March.
C.it’s hard to find a part-time job at Christmas
D.Chinese students in an Australian school needn’t go to school when Spring Festival comes

Which is the best title for this passage?

A.Christmas time in Australia
B.The holidays in Australia
C.Enjoy your visit to Australia
D.Have you ever studied in Australia?

Attention! Students ! Beach party comes ! We are going to have an outdoor party at the National Park on July 15.
Activities: 1. Ride bikes from the Student Center to the beach.
2. A picnic on the beach.
3. Swimming and sailing contests.(帆船赛)
What to bring: sun cream, sunglasses, hats, swimsuits, hiking shoes and personal items.
Deadline for signing up(报名): Sunday, July 8
Fee: 200 per person.
Meet at the Student Center at 10:00 am, July 15
P. S:All the food will be offered by the Students’ Union.
Where do you usually find a poster like this?

A.On the beach B.In a bookstore
C.In a school D.In a park

Students don’t need to bring _______.

A.swimsuits B.sunglasses C.food D.hiking shoes

Where do the students meet?

A.At the student Center. B.At the National Park
C.On the beach D.At the Students Union

Which of the following is WRONG?

A.Boats are needed in the activities
B.The party begins at 10:00 pm
C.The last day to signup is July 8
D.Students will have a picnic on the beach

What’s the main purpose (目的) of the poster?

A.To tell students what to do in the summer.
B.To teach students how to plan a party.
C.To make money for National Park.
D.To get more students to join the activities if possible.

根据短文内容,回答问题(10分)
Ayumi lived with her mother when she was a kid.She couldn't remember her father because he left the family when the girl was five and never came back.Ayumi's mother gave her much freedom to do whatever she liked,because the mother was always at work.
Ayumi was a model when she was young.After graduating from junior high school,she left home to take entrance exams to an art school in Tokyo with her friends,but to her surprise,she was the only one that failed.
After that,when someone offered her a chance to be a singer,Ayumi refused,because she thought she wasn't good at singing. But later,she changed her mind — she couldn't find any other jobs.
Her first song came out in 1998 and soon attracted attention.Her first albums(唱片) A Song for ×× came out in 1999 and quickly sold over one million copies. Each of her albums has sold very well since then.She has become "the Queen of Pop" in Japan.
根据短文内容回答下列问题。
Why did Ayumi's mother give her much freedom?
________________________________________________
What result did Ayumi get in her entrance exams to an art school in Tokyo?
________________________________________________
At first, why did Ayumi refuse the chance to be a singer?
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What's the name of Ayumi's first album?
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When did her first song come out?
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Many people go to school for education. School education is very important and useful, but no one can learn everything from school. A teacher, no matter how much he knows, can't teach his student everything. His work is to show his students how to learn .He teaches them how to read and how to think. So much more is to be learned outside school by students themselves.
It’s always more important to know how to learn by oneself than to learn some facts or formulas(公式) by heart. It’s quite easy to learn some facts in history or a formula in maths, but it’s very difficult to use them. Edison and Einstein didn’t get everything from school, but they were all successful. They invented so many things. The reason for their success is that they knew how to study. They read many books outside school. They worked hard all their lives, wasting not a single moment. The most important thing is that they know how to use their brains(大脑).
Students can’t learn everything in school because _____________.

A.the teacher doesn’t know much
B.the teacher can only teach them how to read and write
C.the teacher would not like to teach
D.there are still many things for the students to learn outside

A teacher’s work is _________________

A.to teach all subjects B.to teach everything
C.to teach the students how to read and think D.to work hard

To know how to____is much more important than facts or formulas by heart.

A.work out maths problems B.remember all the facts
C.study science D.study

Why did the famous scientists become successful ? Because__________

A.they knew how to study
B.they remembered all the formulas
C.they didn’t get everything from school
D.they didn’t know how to use their brains

Which is WRONG according to the passage?

A.Outside school study is as important as school study
B.It’s more important to know how to learn than only remember some facts and formulas.
C.It’s very easy to use a formula in working out a maths problem.
D.It’s helpful to read more books outside school

A boy and his father went walking in the mountains. Suddenly the boy fell, hurt himself, and cried, “AAAhhhhhhhh!!!” To his surprise, he heard the voice repeating, somewhere in the mountain, “AAAhhhhhhhh!!!” Then the boy shouted, “Who are you?” He received the answer, “Who are you?” He got angry at the answer, so she shouted, “Foolish!” He received the answer, “Foolish!”
He looked at his father and asked, “What’s going on?” The father smiled and said, “My son, listen,” And then he shouted to mountain, “I love you!” The voice answered, “I love you!” Again the man cried, “You are the best!” The voice answered, “You are the best!”
The boy was surprised, but did not understand. Then the father explained (解释), “People call this Echo, but really this is life. It gives you back everything you say or do. Our life is just a reflection(反映)of what we have done. If you want more love in the world, have more love in your heart. If you want to be successful, work hard,. This can be used in everything in life. Life will give you back everything you have given to it.”
At first the boy cried because _______.

A.he hurt himself and felt bad
B.he wanted to give himself a surprise
C.he felt it was so quiet in the mountain
D.he hoped his father would help him

When the boy heard the voice repeating, he thought________.

A.it was foolish to hear others’ voice
B.someone else in the mountain liked his voice
C.there were many other people in the mountain
D.he was laughed at by someone else in the mountain

The father shouted to the mountain to ________.

A.find out who was repeating his voice
B.have fun with other people in the mountain
C.show more examples to his son before giving him the answer
D.let his son know whose voice was louder

The word “Echo” means__________.

A.life itself B.repeating voice
C.love in the world D.everything in life

From the story, we know _________.

A.the boy didn’t like others’ voice at all
B.the father had his own way to teach his son
C.it is not polite to repeat others’ voice
D.the boy and his father were rather tired

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