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题型:阅读理解 题类:常考题 难易度:普通

江苏省海安高级中学2019届高三上学期英语12月月考试卷

阅读理解

    Anyone watching the autumn sky knows that migrating birds fly in a V formation, but scientists have long debated why. A new study finds that these big-winged birds carefully position their wingtips and flap(拍动) at the same rate, probably to catch the upward movement of air and save energy during flight.

    There are two reasons birds might fly in a V formation: It may make flight easier, or they're simply following the leader. Squadrons(中 队) of planes can save fuel by flying in a V formation, and many scientists suspect that migrating birds do the same. Models that treated flapping birds like fixed-wing airplanes show that they probably save energy by drafting off each other, but currents created by airplanes are far more stable than those coming off of birds.

    Just as aerodynamic(气动力) calculations would predict, the birds positioned themselves to fly just behind and to the side of the bird in front, timing their wing flaps to catch the uplifting eddies(涡流). When a bird flew directly behind another, the timing of the flapping reversed(相反) so that it could minimize the effects of the downdraft coming off the back of the bird's body. “We didn't think this was possible,” Usherwood says, considering that the difficult achievement requires careful flight and incredible awareness of one's neighbors. “Perhaps these big V formation birds can be thought of quite like an airplane with wings that go up and down.”

    The findings likely apply to other long-winged birds, such as pelicans and geese, Usherwood says. Smaller birds create more complex wakes(尾波) that would make drafting too difficult. The researchers did not attempt to calculate the birds' energy savings because the necessary physiological measurements would be too invasive for an endangered species. Previous studies show that birds can use 20% to 30% less energy while flying in a V.

    Scientists do not know how the birds find that aerodynamic sweet spot, but they suspect that the animals line themselves up either by sight or by sensing air currents through their feathers. In future studies, the researchers will switch to more common birds, such as pigeons or geese. They plan to investigate how the animals decide who sets the course and the pace, and whether a mistake made by the leader can ripple through the rest of the flock to cause traffic jams.

(1)、The author takes squadrons of planes for example to show ____.

A、birds may save energy by flying in a V formation B、birds fly in a V formation for many more reasons C、planes flying in a V formation follow the leader D、planes flying in a V formation are more economical
(2)、Why did Usherwood think it impossible for a bird to fly directly behind another?

A、Because birds differ from airplanes in wings. B、Because birds know nothing about aerodynamics. C、Because birds could hardly create stable currents as planes. D、Because birds have to overcome great difficulties when flying.
(3)、What is the scientists' attitude toward the findings mentioned in the passage?

A、Cautious. B、Contradictory. C、Confident. D、Critical.
(4)、What would the researchers do in their future studies about the birds?

A、Calculate the birds' energy savings. B、Do research on more common birds. C、Find how the birds line themselves up. D、Apply the findings to smaller birds.
举一反三
阅读理解

    Parents who help their children with homework may actually be bringing down their school grades. Other forms of prenatal involvement, including volunteering at school and observing a child's class, also fail to help, according to the most recent study on the topic.

    The findings challenge a key principle of modern parenting(养育子女) where schools except them to act as partners in their children's education. Previous generations concentrated on getting children to school on time, fed, dressed and ready to learn.

    Kaith Robinson, the author of the study, said, "I really don't know if the public is ready for this but there are some ways parents can be involved in their kids' education that leads to declines in their academic performance. One of the things that was consistently negative was parents' help with homework." Robinson suggested that may be because parents themselves struggle to understand the task." They may either not remember the material their kids are studying now, or in some cases never learnt it themselves, but they're still offering advice."

    Robinson assessed parental involvement performance and found one of the most damaging things a parent could do was to punish their children for poor marks. In general, about 20% of parental involvement was positive, about 45% negative and the rest statistically insignificant.

    Common sense suggests it was a good thing for parents to get involved because "children with good academic success do have involved parents ", admitted Robinson. But he argued that this did not prove parental involvement was the root cause of that success." A big surprise was that Asian-American parents whose kids are doing so well in school hardly involved. They took a more reasonable approach, conveying to their children how success at school could improve their lives."

阅读理解

    "BANG! " the door caused a reverberation(回声). It was just standing there, with father standing on one side, and me on the other side.

    We were both in great anger. "Never set foot in this house again! "father stormed. With tears welling up in my eyes, I rushed out of the flat and ran along the street.

    The street lights were shining, causing rather sad feelings. I walked aimlessly.

    A young father who held a child in his arms walked past me. I felt as if I saw childhood from another space: happy and carefree(无忧无虑的).

    But now... I don t know whether it is because I have grown up or because dad is getting old. We differ in our ways of thinking. We are just like two people coming from two different worlds. It feels like there is an iron door between us that can never be opened.

    I wandered the streets, without a destination in mind. My heart was frozen on this hot summer night. As I walked on, there were fewer and fewer people on the streets, until I had only the street lights to keep me company. When I finally reached the high-rise apartment block in which I lived, I saw that the light was still on.

    I thought to myself: "Is father waiting for me, or is he still angry with me?"

    In fact, it was nothing. Perhaps, dad was throwing away some of his old stamps. Perhaps thought they were useless. I never had the courage to tell him that I liked collecting stamps.

    All the lights were off except father's.

    Dad was always like this. Maybe he didn't know how to express himself. After shouting at me, he never showed any pity or any moments of regret. This was how he always was. He has been a leader for so long that telling everyone else what to do has become his second nature.

    The light was still on. "Am I wrong?"I whispered, maybe... With the key in my hand, I was as nervous as I had ever been. At last, I decided to open the door. As soon as I opened the door, tears ran down my cheeks. I suddenly realized that the iron door that I had imagined between us did not exist at all. love-it's second to none.

阅读理解

For:

Boys & Girls aged 7-10

Dates:

3 Sundays

● Sunday, April3

● Sunday, April24

● Sunday, May15

Time:

Sundays: 10 am--3:15 pm

Cost:

$80 per day, per kid

Instructors:

Jonathan Gonzalez, Stephanie Giesel, Paul Tobin, teen instructors

and other visiting elders.

Location:

Stony Kill Road in Accord, NY

Additional Questions and  Information:

Please contact Simon Abram-son with questions about

the content of this program.

Simon is reachable at(845)

256-9830 or simon@wilderth.org.

Spring Discovery

This spring, we will gather in the forest to play games, tell stories around the fire, explore the nature and so much more!

Join us for any of the Kestrel Sundays!

Together, we will safely explore the nature and build lasting friendships with each other and stay in the village where the children have enriched each summer at camp.

Children walk away from Kestrel feeling at home in nature and at home in themselves.

Each day begins with a morning circle where thanksgiving, songs and games bring us further into our bodies. The days are filled with nature-based games that expand our awareness, storytelling from skilled instructors and visiting elders, songs inspired by nature's beauty, exploring the forest and looking for mysteries, sculpting clay, and wandering the caves. At the end of the day, with leaf and flower on our heads,our faces painted and smiles on our faces, we'll return!

Kestrel is where your child will:

Play and explore the beautiful outdoors.

Experience and practice a variety of wilderness skills and native technology.

Practice awareness, quiet-mind, animal forms, curiosity, exploration, telling the story of the day, and gratitude.

Face personal and group challenges tailored to build awareness, self-confidence and group unity.

Our Kestrel instructors are experts in guiding children to safety and freely move in the direction of their own curiosity.

阅读理解

    Last Thursday, Michael and Linda stood behind large food trucks distributing meals to 4,000 homeless people for their wedding reception on the border town of Kilis. The couple had decided that instead of hosting their friends and family for a traditional feast reception, they would feed the victims from an earthquake-stricken area.

    The idea came from the bridegroom's father, Ted, who volunteers for a Turkish relief organization. For the past few years, the organization has distributed daily meals to thousands of people who have suffered from natural disasters. He approached a representative of the organization and suggested that the family cover part of the costs of feeding them for the day.

    Then he told his son, who was surprised by the suggestion, but soon won over. When he told that to the bride, she was really shocked but finally accepted because in southeastern Turkey there is a real culture of sharing with people in need. They love to share their food, their table and everything they have. And afterwards she was quite amazed about it. So, they arrived at the distribution center on Thursday to spend the day serving food and taking photographs with their grateful recipients(接受者).

    On Tuesday evening, the newly married couple were still pleased with their decision to quit a personal celebration for one with a greater good. "It's like sharing a dinner with your friends and family who have this kind of thing on a daily basis or sharing something with people who don't even have the most basic things," Michael said. "Hopefully, this will also give the start for other wedding dinners to be held here with our brothers and sisters in need."

阅读理解

    Twenty-five years ago, most young Britons wanted a career in law, to be a doctor, or, if they were creative enough, to take up singing. But today, things stand differently.

    According to a survey by Tesco Mobile, a UK company, the "dream job" of young people aged between 16 and 25 in the UK is a video blogger, or "vlogger". The survey, carried out among 1,002 people, found that as much as 40 percent of them put vlogger as their number one choice on a list of ideal careers.

    This change is undoubtedly as a result of the Internet and social media. They have made it so much easier to reach audience of the world, without having to enter a career in show business in the traditional way.

    In the past, the biggest stars were trained by the Hollywood studios; now, anyone with a computer camera can become a star. Vloggers are the big stars of today because they are normal people interacting with their fans about everyday life."

    However, what people see is only the bright side of being a vlogger and they fail to notice the fact that only those who are successful earn fame and fortune. For every success there are hundreds of others who never get off the starting line. There are the dreams that come true and the dreams that remain dreams forever.

    Although being vloggers is popular, some young people choose to follow careers that don't necessarily earn them fame, but allow them to make good use of the Internet to share their hobbies. Young Israeli David Leshaw, for example, runs a business called the Finishers Club. It's an online platform for runners to keep a record of their races. His job allows him to express his enthusiasm, and is always a learning experience. And that's enough for him.

阅读理解

Where am I? What am I doing? If you're one of my 500 friends online, you'll always be the first to know. My phone and laptop are never out of touching distance, so I'm endlessly checking through all my social networking apps - whether I'm having a coffee, on my way to school, watching TV. . even when I'm in the shower. I have a never - ending flow of messages and updates from all the people I associate with online. Yet the truth of the matter is: I feel lonely

I'm not the only person who feels this way. According to research, over two-thirds of young people find it easier to make friends online than it is "in real life". I'm a shy person, but I'm wired up (上线) every day, like most of my friends. On the surface, phones bring us closer together. But in reality, my mind is always a million miles away.

I often feel depressed, dissatisfied and alone. Since I spend so much time socializing online, I even become a procrastinator (拖延者). I keep postponing things that are important in my real life: homework, tasks, connecting with my friends and family members in a meaningful way. It's funny that my friends and I chatter away online so much, but we end up having nothing to say when we meet.

What is rally worrying is that no one I know, including myself. could go cold turkey. I can't even imagine going without social networking for a week - think of all the important appointments, invitations and news updates you would miss! Alcoholics (酗酒者) who want to quit drinking can avoid drinks, but how do we give up our phones? After all, I need it for my studies because my teachers and classmates need to contact me at any time. So, that's the problem with social networking. We're hard-wired in, but we're more disconnected than ever.

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