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随时随地学习
随时随地学习
1、Vertical farms have the potential to reduce or eliminate the need to create additional farmland, for it is estimated that by the year 2050, the world's population __________ by 30 billion and close to 80% will live in urban areas.
A. will be increasing B. will increase
C. will have increased D. has increased
2、It was only when the car pulled up in front of our house ___________we saw Lily in the passenger seat.
A．which
B．that
C．when
D．where
3、If I ________ time,I would go to the park with my classmates.
A．have
B．will have
C．had
D．have had
4、 ——Hi, John. Are you busy?
——________________
A. Yes.I do agree. B. Yes.That would be nice.
C. No.Are you sure? D. No.What’s up?
5、— What has made you so upset?
— ______ my new bike.
A．Lost
B．Because of losing
C．Since I lost
D．Losing
6、—Do you think it is a good idea to make friends with your students?
—________, I do. And so do my colleagues.
A.Really B.Clearly C.Actually D.Generally
7、After being for days, the water supply returns to normal today.
A.cut off B. cut down C. cut out D. cut up
8、You must get the work ________ before Friday.
A．do
B．to do
C．doing
D．done
9、If you go to the wildlife park，you will find the places there more dangerous than commonly__________
A．supposing B．suppose
C．to suppose D．supposed
10、Millions of pounds’ worth of damage ________ by a storm which swept across the north of England last night.
A. has been caused B. had been caused
C. will be caused D. will have been caused
11、He raced to the hall, just _______ the conference _______.
A．finding; has been cancelled
B．to find; has been cancelled
C．finding; had cancelled
D．to find; cancelled
12、It is no good ________ without understanding.
A．read
B．to read
C．reading
D．being reading
13、 A journal is not necessarily a reliable record of facts, for the writer’s impressions _____ colour the telling of events.
A. must B. shall C. should D. might
14、The new bridge ________ by the end of last month.
A.has been designed B.had been designed
C.was designed D.would be designed
15、As he works in a remote area, he visits his parents only_______.
A.apparently B.occasionally
C.practically D.abruptly
16、—You can have a pet dog, but suppose you get bored with it in a few days.________?
--- We won’t, we promise.
A．Then what
B．All right
C．How come
D．So what
17、At no time ________ the rules of the game.It was unfair to punish them.
A.they actually broke B.do they actually break
C.did they actually break D.they had actually broken
18、_______ a satisfactory operation, David’s father will recover from the illness very soon with the doctors and nurses taking care of him.
A.Having given B.Given C.Being given D.Giving
19、________ breaks the law should be punished.
A．No matter who
B．Whoever
C．All
D．Who
20、Famous people don’t have much free time because their time is by their work.
A. taken up B. taken in
C. taken over D. taken away
21、Over the years, farmers and scientists have discovered ways to grow crops stronger, bigger, and faster. This has greatly increased in the amount of food we produce.
These huge increases in food have allowed the world’s population to grow. As the population grows, so does the amount of space that we need to feed people. In the coming decades, feeding a growing population will become more difficult. Greenhouse gases from agriculture are heating the Earth, which makes growing food more difficult.
Modern agriculture is also partly responsible for its own problems. Farmers of ten use too many of the Earth’s natural resources and harm ecosystems (生态系统).
There are many ways agriculture harms ecosystems. Three main ways are irrigation, animal grazing (放牧) and chemical fertilizers (化肥).
Irrigation
70 percent of the freshwater that people use goes to agriculture, much of which is used for irrigation, the process of watering crops through pipes.
Irrigation has consequences for the environment, one of which is draining water out of rivers and underground water systems. In areas where water has been drained, the soil can become too salty. This also harms plant growth. Besides, studies have shown that irrigation can change rainfall thousands of miles away from the irrigated areas.
Animal Grazing
Farm animals are responsible for a large part of greenhouse gas emissions. Greenhouse gases trap heat in Earth’s atmosphere. Methane and carbon dioxide are two major greenhouse gases. Cows and their manure (牛粪) are responsible for releasing huge amounts of methane.
Chemical Fertilizers
Modern agriculture depends on chemical fertilizers, which farmers spread over crop fields or into dirt. They contain nutrients that plants need to grow, such as nitrogen and phosphorus.
Chemical fertilizers have helped double how much food we can produce. But they have also increased nitrogen and phosphorus levels in the environment. About half the nitrogen in chemical fertilizers escapes from crop fields. Therefore, ecosystems become loaded with too many nutrients, which causes water plants to grow in water bodies. When the plants decay (腐败), they use up the oxygen in the water.
As the population continues to grow, it might become more difficult to feed people. We will likely have to find more sustainable ways of farming.
【1】What is the function of Para. 7?
A．It provides examples of some of the most dangerous types of greenhouse gases.
B．It describes the increase in agricultural production because of animal grazing.
C．It explains how overgrazing contributes to climate change.
D．It illustrates advantages and disadvantages of animal grazing.
【2】How do fertilizers affect ecosystem health according to the article?
A．They overload ecosystems with nutrients harmful to other life.
B．They contribute to the worsening of the global freshwater supply.
C．They allow farmers to double their output.
D．They release powerful greenhouse gases.
【3】Which will the author be likely to support?
A．Many current technologies are harmful to ecological sustainability.
B．Modern agricultural technologies have also increased our ecological sustainability.
C．Food system’s ecological sustainability increases with the increase of agricultural productivity.
D．To increase agricultural productivity, we will need to be less conscious of ecological sustainability.
【4】Which is the main idea of the article?
A．Population explosion has been enabled by revolutionary agricultural technologies.
B．Irrigation overuse in many areas is now threatening soil quality and weather patterns.
C．Current global agricultural system relies completely on the use of chemical fertilizers.
D．Overusing agricultural technologies causes climate change and threatens future agricultural health.
22、 One of the things that makes your smart-phone so smart is that if you pull it out in the sun, it senses that—and dials up the screen brightness to compensate. But it’s not a perfect solution.
“First of all, it’s still not bright enough—you have to remember how respectable sunlight is.” Shin-Tson Wu, a physicist at the University of Central Florida. The other problem, he says of the brightened screen, is it kills the battery. So Wu and colleagues have produced a battery-sparing alternative: an anti-reflective screen-coating. Based on the eyes of moths. “Nature is so rich! We can learn a lot from nature. “The thing Wu and others have learned about moth eyes, is that they’re uneven, dotted with tiny projections. That uneven surface reduces the reflection of light off their eyes- thought to help the bugs escape predators (捕食者), and see better in low light. So Wu and his team built a similar surface with tiny dimples (凹), to cut down on glare. He says the dimpled coating could improve the readability of a screen by five to 10 times, compared to a normal smart-phone screen. The details are in the journal Optica.
The tech hasn’t been commercialized yet, and that could take a few years. Which gives researchers time to take advantage of another property of these surfaces: they’re flexible. Meaning the possibility of bendable displays. Combine that with the bendy batteries we reported on in a recent podcast(播客), and it looks the smart-phones of the future could be set for a real transformation.
【1】Why do the researchers develop the anti-reflective screen-coating?
A.To brighten the screen. B.To make profits.
C.To take in the sunlight. D.To save the use of battery.
【2】What inspired the invention of the screen?
A.The predators. B.The reflection of light.
C.The eyes of moths. D.The smooth surface.
【3】How does the screen work?
A.It helps bugs escape.
B.It slows down reading.
C.The smooth surface protects our eyes.
D.The rough surface decreases the reflection of light.
【4】What do the researchers expect of the screen?
A.I’ll transform itself. B.I’ll be environment-friendly.
C.I’ll reach consumers soon. D.I’ll be powered by recyclable batteries.
23、Next autumn when you see wild geese heading south for the winter flying in a V formation you might think about what scientists have discovered as to why they fly that way.
As each bird flaps(拍打) its wings， it creates an uplift（升力） for the bird immediately following. By flying in V formation the whole group adds at least 71% greater flying range(航程) than if each bird flies on its own.
People who share a common direction and sense of community can get where they are going more quickly and easily because they are traveling on the push of one another. When a wild goose falls out of the formation， it suddenly feels the drag and resistance(阻力) of trying to go alone and quickly tries to get back into the formation to take advantage of the lifting power of the bird in front. When the head goose gets tired, it flies back into the formation and another goose flies to the front. It is wise to take turns doing difficult jobs whether it be people or wild geese flying south.
Wild geese honk(发出雁叫声) from behind to inspire those up front to keep up their speed. When a wild goose gets sick or wounded by gunshots, and falls out of the formation, two other geese will fall out with that goose and follow it down to lend help and protection. They will stay with the fallen goose until it is able to fly or until it dies, and only then will they go on with their own or with another formation to catch up with their group.
【1】Wild geese fly in a V formation in order to_______.
A．protect themselves from danger
B．fly more quickly and easily
C．help the sick and wounded
D．fly much higher in the sky
【2】If a wild goose falls out of the V formation,______.
A．the other geese will call it back
B．the other geese will fly with it
C．it will try to get back into the group
D．it will fall behind the whole group
【3】What can we learn from Paragraph 4?
A．We should believe in those who offer us help.
B．We should care more about the old and sick.
C．We should try to lead others to move forward
D．We should give people facing difficulties encouragement.
【4】When a wild goose becomes sick or is wounded, _______.
A．the whole group will stop flying
B．two other geese will stay with it to offer help
C．it will be left alone and will fall on the ground
D．other geese will honk to give it encouragement
24、 Mrs. Smith trembled with excitement when she was told her fortunes. “Somebody is coming home to you,” Mrs. Gray said slowly. “He’s carrying a rifle on his back and he’s almost there.”
Mrs. Smith felt as if she could hardly breathe “And there he is!” Mrs. Gray cried, pointing to the road. They all rushed to the door to look.
A man in a blue coat, with a gun on his back, was walking down the road toward the Smith farm. His face was hidden by a large pack on his back.
Laughing and crying, Mrs. Smith grabbed her hat and her children and ran out of Mrs. Gray’s house. She hurried down the road after him, calling his name and pulling her children along with her. But the soldier was too far away for her voice to reach him.
When she got back to their farm, she saw the man standing by the fence. He was looking at the little house and the field of yellow wheat. The sun was almost touching the hills in the west. The cowbells rang softly as the animals moved toward the bar(畜棚).
“How peaceful in all is,” Private Smith thought. “How far away from the battles, the hospitals, the wounded and the dead. My little farm in Wisconsin. How could I have left it for those years of killing and suffering?”
Trembling and weak with emotion, Mrs. Smith hurried up to her husband. Her feet made no sound on the grass, but he turned suddenly to face her. For the rest of his life, he would never forget her face at that moment.
“Emma!” he cried.
The children stood back watching their mother kissing this strange man. He saw them, and kneeling down, he pulled from his pack three huge red apples. In a moment, all three children were in their father’s arms. Together, the family entered the little unpainted farmhouse.
Later that evening, after supper, Smith and his wife went outside. The moon was bright, above the eastern hills. Sweet, peaceful stars fled the sky as the night birds sang softly and tiny insect buzzed in the soft air.
His farm needed work. His children needed clothing. He was no longer young and strong. But he began to plan for next year. With the same courage he had faced the war, Private Smith faced his difficult future.
【1】Why could Mrs. Smith hardly breathe when told her fortunes?
A.She had a sudden heart attack and almost lost consciousness.
B.She was shocked by the scene of a man with a rifle on his back.
C.She was overjoyed on hearing the return of her husband.
D.She ran out of the house too fast to catch her breath.
【2】What does the underlined sentence in paragraph 7 suggest?
A.The moment expected for years would be a life-long memory.
B.He had almost forgotten her face after those years’ suffering.
C.He was shocked by the excitement written on her face.
D.He was afraid to be apart from her again.
【3】What’s Privato Smith’s attitude towards the future life?
A.Skeptical. B.Confused.
C.Hopeful. D.Concerned.
【4】Which of the following might be the best title for the text?
A.A strange Visitor B.Husband and Wife
C.The Return of a Private D.The Smiths
25、 My son, Ben, died when he was 23. He likes hiking and was always feeling most at home when he was ______ . The year after his death, I hiked 48 of the state's tallest mountains in his ______ . Every step, path and summit has been a way to ______.
About a month after his death, my husband and I hiked Carter Dome, ______ weighing heavy in our hearts and legs. Standing on the summit, I looked out across the mountains my son ______ . For a moment, the enormous impact of Ben's death ______, and I could breathe.
The next weekend found us on Mount Milwaukee. Hiking the four-kilometer mountains became a series of firsts, of struggles and ______ them ——directing positions at night, finding paths and planning ______ . At last, I hiked my 48th and the ______ peak: Mount Carrigain. As I stood on the observation platform at the summit, I found the essential truth I had been trying to ______ for months: the only place that feels vast enough to ______ such deep and wide sadness is the top of a mountain: Eventually, the day came and I felt much better.
These days, I hike not to hide; but to ______ . I find Ben, but also find myself: someone ______ , now regenerating into someone who is braver and ______ . Hiking is exhausting as well as ______, and it teaches us that sadness and joy can coexist.
A．indoors
B．outdoors
C．away
D．back
A．memory
B．favor
C．interest
D．effort
A．suffer
B．exercise
C．recover
D．entertain
A．sorrow
B．discomfort
C．tiredness
D．disappointment
A．hated
B．loved
C．discovered
D．fled
A．grew
B．transformed
C．lasted
D．faded
A．accepting
B．overcoming
C．preventing
D．ignoring
A．tracks
B．vehicles
C．directions
D．routes
A．highest
B．toughest
C．final
D．initial
A．figure out
B．test out
C．keep up
D．bring up
A．express
B．sense
C．hold
D．suffer
A．withdraw
B．seek
C．tolerate
D．challenge
A．broken
B．puzzled
C．distinguished
D．abandoned
A．more energetic
B．more confident.
C．stronger
D．healthier
A．appealing
B．annoying
C．demanding
D．inspiring
26、假如你是晨光中学学生李华, 你的美国笔友 Peter 对你校上周举办的艺术节(the Art Festival)非常感兴趣。请你给他介绍一下艺术节的情况，并邀请他下次来参加。
1. 时间与地点；
2. 活动目的；
3. 活动内容与参加者；
4. 收获与感想。 注意:1. 词数不少于 100；
2. 可适当加入细节，使内容充实、行文连贯；
Dear Peter,
________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
Looking forward to your reply.
Yours,
Li Hua
邮箱： 