When the Audet family turns on the lights at Blue Farm, they are using electricity that comes from cows—cow manure (粪肥), to be specific.
Cows produce a lot of wastes. One cow can create 30 gallons of wastes each day. Now imagine the output of over 1,000 cows at Blue Farm. That’s really a big amount.
When farmers clean their barns, they put the wastes in a big heap, and spread some of them on their fields for fertilizer(肥料). But now places like Blue Spruce Farm have a new way of using cow wastes. They use them to produce electricity.
Here’s how it works: A big machine moves back and forth cleaning the barn floor. “The cows aren’t bothered,” says Marie Audet. “They are animals of habit; they get used to it, and just lift one foot and then another to let it go by.”
The machine pushes the manure into a big 600-gallon tank like a small swimming pool. The tank is called a digester (化粪池) because what happens there is just like what happens inside a cow: Bacteria(细菌) get to work and continue to digest the manure.
Methane gas (甲烷、沼气)in the atmosphere is known as a “greenhouse” gas because it keeps heat just like a greenhouse does, causing our planet to warm up. That’s an environmental concern. But the digester has a good result. Its gas is kept and used to power electric generators (发电机).
At Blue Farm, the generators make enough electricity to power 400 homes. The Audet family sells the extra electricity they can’t use themselves.We learn from the text that the Audet family is using cow wastes to ______.
| A．make electricity | B．produce fertilizer | C．build their farm | D．feed the cows |
How are the cow wastes collected into the digester at Blue Farm?
| A．Marie Audet does the work | B．The job is done by machine |
| C．The cows lift the cow wastes | D．Bacteria get to work on them |
According to the passage, which of the following is changed into electricity?
| A．The power of moving water. | B．The heat of burning coal. |
| C．The power of sunlight. | D．The heat of the methane gas |
The new way of using cow wastes at Blue Farm might be best described as ______.
| A．reducing | B．saving | C．recycling | D．changing |
What is the main purpose for writing the passage?
| A．To introduce a new way of making electricity | B．To explain how a new energy works better |
| C．To show a new rebuilding plan for a big farm | D．To explain the reasons for green house effect |
Mary Armstrong was a pretty little girl，but she did not pay attention to her things.She usually left her books and playthings everywhere，and it gave her mom much trouble in picking them up and putting them in the proper places.Some of her books and toys became spoiled（损坏）.Her mom had often told Mary the bad result of being so careless.The growing habit of carelessness would make her unhappy，and sometimes annoy her friends.Even worse，it would be of great harm to her all her life.But Mary didn't listen to her mom.So they argued a lot.
One day Mary made a beautiful toy，a gift for her best friend's birthday.When her mom asked her to go out into their yard to play，Mary put the toy in her room casually（不经意地）.She ran around and played happily there.An hour later，it was time to go to her friend's birthday party.Mary went back to get the toy.But she couldn't find it anywhere.Finally，she found the toy broken in the corner.At once she realized that Dash，her pet dog had done this，and she was very angry.Carrying the broken toy to her mom，she couldn't help crying.
Mrs.Armstrong asked Mary if she had left the toy in the place where Dash could easily get it，and Mary answered， "Yes，mom"
"Then you should not be irritated，Mary，because the dog does not know it is wrong to play with your toy.I hope this will be a lesson to you hereafter，to put your things away when you finish"
I will try， "said Mary.And her mom promised to repair the toy as well as she could.
根据短文内容，选择最佳答案。
（1）What did Mary and her mom argue about？
A.Her books.
B.Her playthings.
C.Her way of making friends.
D.Her habit of carelessness.
（2）Why did Mary cry when carrying the gift to her mom？
A.Because her gift was broken.
B.Because Dash broke her book.
C.Because Dash annoyed her friends.
D.Because Mrs.Armstrong was mad at her.
（3）Which is the right order of he following things？
①Dash broke the toy. ②Mary put the toy in her room.
③Mary found the toy in the corner. ④Mom would repair the toy for Mary.
A. ①③②④
B. ①③④②
C. ②①④③
D. ②①③④
（4）What does the underlined word "irritated" in the fourth paragraph probably mean？
A.Glad.
B.Scared.
C.Angry.
D.Interested.
（5）What does the passage mainly tell us？
A.Listen to our parents，and they'll repair our things.
B.Be kind to our pets，and they won't break our things.
C.Get on well with our friends，and we'll get birthday gifts.
D.Be careful with our things and we'll develop a good habit.
According to a recent survey by Xinhua Research Center，Chinese people prefer buying local brands over foreign brands.The first China Brand Day fell on May 10.2017.A lot of activities take place to help Chinese brands develop across the country on that day every year.Let's take a look at the results of the survey.
In the past， "Made in China" made people think of cheap and poor quality（质量差的）products.But that seems to be changing.Chinese people show a lot of interest in low price，good quality and creative design（设计）.Experts say Chinese brands will continue to be more popular over the next 10 years.
根据短文和图表内容，选择最佳答案。
（1）Xinhua Research Center did a survey about .
A.prices
B.quality
C.brands
D.design
（2）32% of Chinese people don't care about brands in .
A.food
B.medicine and health care
C.bags and cases
D .poor﹣quality products
（3） of Chinese people prefer local bags and cases.
A.10%
B.22%
C.31%
D.47%
（4）Chinese people choose local brands because of the following except .
A.fine materials
B.good quality
C.creative design
D.low prices
（5）From the passage，we can know .
A. "Made in China" is popular among Chinese people all the time
B.foreign brands will not be accepted by Chinese people in ten years
C.only 10%of Chinese people prefer foreign food while others hate it
D .many activities are organized to help Chinese brands to develop on China Brand Day
Eric：Hey，Lily !Why do you look so excited today？
Lily：I just practiced singing in the 100﹣people chorus（大合唱）.
Eric：Wow!One hundred people？ （1）
Lily：Sure it is.It's for the 100th birthday of the Communist Party of China.
Eric：Our school also has some activities for the special day.
Lily： （2）
Eric：I'll read poems as a member of the poem reading group.
Lily：Sounds interesting! （3）
Eric ：They're about Chinese history and patriotism（爱国主义）.
Lily： （4）
Eric：Yes.A lot of people volunteer for Beautiful Changchun to celebrate it.
Lily：It seems that everyone wants to do something for the celebration.
Eric： （5） It's a big event to our country.
Lily：It will be the most unforgettable experience in our life，too.
Eric：I think so.
A.You're right. B.That's amazing. C Where are you going？ D What are the poems about？ E What activities will you take part in？ F.Are many other people in Changchun also making preparations？ |
Many of us stayed at home in January because of COVID﹣19，but a special mom and her two babies took a trip.They were driven a few miles from a breeding center in northeastern Argentina to a 1.7 million﹣acre nature reserve called Gran Ibera Park.There the three jaguars were released into the wild.
Their release was the first reintroduction of jaguars in that part of Argentina since the species（物种）almost died out there 70 years ago.Scientists hope they can turn things around for this important apex predator，meaning one that is on top of the food chain （链）.Only 200 to 300 jaguars remain in the country.
"That is the highest level of protection that can be given in Argentina，"says Sebastian Di Martino.He's the conservation director for Rewilding Argentina，which is one of the organizations helping to restore jaguar populations.
The jaguars' journey started in 2018 when the park was built in the Ibera Wetlands.Several thousand jaguars once lived there，along with other important species.But the jaguars' fur was valuable，so people hunted them.Then farmers cleared the land they lived on.With the jaguars gone，the ecosystem was out of balance.
"In the absence of this species，ecosystems stop working well and may even collapse，" Di Martino says. "The main prey （猎物） of the jaguar is the capybara and the caiman.They are very abundant because of the absence of the jaguar，which causes imbalances in the ecosystem."
The park was the first step to give jaguars a place to live.Then they needed to breed.A female named Mariua mated with a male jaguar from Brazil.Mariua then gave birth to the two baby jaguars.
It sounds simple，but the reality is more complicated.Di Martino said that jaguars born at breeding centers have to learn how to hunt and must not become used to humans.Otherwise，they will not have success in the wild.
The people who work at the breeding center stay out of sight.They use video cameras to watch the jaguars from several miles away."We provide live prey for them，without them realizing it comes from people，" Di Martino said.
Mariua wears a radio collar so researchers can track her and her babies，Karai and Pord. "So far，so good.She's been hunting capybaras and wild pigs and is raising her babies very well，" Di Martino says.
（1）What can we learn about the jaguar？
A.It is found only in Argentina.
B.It is taught to hunt by humans.
C.It is not hunted by any other animal.
D.It is not considered as a rare species.
（2）Which of the following words can best describe Di Martino's job？
A.Exciting.
B.Meaningful.
C.Surprising.
D.Successful.
（3）What does the underlined word "abundant" mean in this passage？
A.More than enough.
B.Less than enough.
C.Getting more powerful.
D.Getting less powerful.
（4）The writer mentioned Mariua .
A.to give an example of jaguars' life
B.to show the importance of female jaguars
C.to introduce a way of training jaguars
D.to explain the method of rewilding jaguars
One wet，rainy April afternoon Miss O' Shay，the principal，sent for Nancy Lee to stop by her office as school closed.Pupils without umbrellas or raincoats crowded in doorways hoping to make it home between showers.Outside the skies were grey.Nancy Lee's thoughts were suddenly grey，too.
She did not think she had done anything wrong，yet that tight （紧的） little knot came in her throat just the same as she came near Miss O' Shay's door.Perhaps she had banged her locker too often and too hard.Perhaps the note in French she had written to Sallie halfway across the study hall just for fun had never got to Sallie but into Miss O' Shay's hands instead.
She knocked on Miss O' Shay's door.That familiarly solid and competent voice said， "Come in."
Miss O' Shay had a way of making you feel welcome，even if you came to be punished.
"Sit down，Nancy Lee Johnson，" said Miss O' Shay. "I have something to tell you." Nancy Lee sat down."But I must ask you to promise not to tell anyone yet."
"I won't，Miss O' Shay，" Nancy Lee said，wondering what on earth the principal had to say to her.
"You are about to graduate，" Miss O' Shay said. "And we shall miss you.You have been an excellent student，Nancy，and you will not be without honors （荣誉） on the senior list，as I am sure you know."
At that point there was a light knock on the door.Miss O' Shay called out， "Come in，" and Miss Dietrich entered."May I be part of this，too？" she asked，tall and smiling.
"Of course，" Miss O' Shay said."I was just telling Nancy Lee what we thought of her.But I hadn't got around to giving her the news.Perhaps，Miss Dietrich，you'd like to tell her yourself."
Miss Dietrich was always direct."Nancy Lee，" she said， "your picture has won the Artist Club scholarship."
The brown girl's eyes widened，her heart jumped，then her throat tightened again.She tried to smile，but instead tears came to her eyes.
"Dear Nancy Lee，"Miss O' Shay said， "we are so happy for you." The elderly white woman took her hand and shook it warmly while Miss Dietrich smiled with pride.
Nancy Lee must have danced all the way home.She never remembered quite how she got there through the rain.She hoped she had been calm.But certainly she hadn't stopped to tell anybody her secret on the way.Raindrops，smiles，and tears mingled on her brown face.She hoped her mother hadn't yet got home and that the house was empty.
（1）How did Nancy feel on her way to Miss O' Shay's office？
A.Scared.
B.Excited.
C.Uncertain.
D.Confident.
（2）What can we infer from the passage about Nancy？
A.She was Miss Dietrich's best student.
B.She would never tell anyone her secret.
C.She was often punished by the principal.
D.She would try to hide feelings at home.
（3）Which is the best title for this story？
A.A New Star
B.The Girl.
C.A Young Artist.
D.The News.
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