题目内容

If a computer crashes，you will lose the file you _____ on if you don’t save it early enough.


  1. A.
    are working
  2. B.
    work
  3. C.
    will work
  4. D.
    worked
A
根据题意如果一台电脑崩溃，如果你不能尽早的保存他们，你将要丢失正在工作的文件。故选A。
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People appear to be born to compute. The numerical skills of children develop so early and so inexorably that it is easy to imagine an internal clock of mathematical maturity guiding their growth. Not long after learning to walk and talk, they can set the table with impressive accuracy—one plate, one knife, one spoon, one fork, for each of the five chairs.  Soon they are capable of noting that they have placed five knives, spoons and forks on the table and, a bit later, which this amounts to fifteen pieces of silverware. Having thus mastered addition, they move on to subtraction. It seems almost reasonable to expect that if a child were secluded on a desert island at birth and received seven years later, he or she could enter a second grade mathematics class without any serious problems of intellectual adjustment.

Of course, the truth is not so simple. This century, the work of cognitive psychologists has illuminated the subtle forms of daily learning on which intellectual progress depends. Children were observed as they slowly grasped or, as the case might be bumped into concepts that adults take for granted, as they refused, for instance, to concede that quantity is unchanged as water pours from a short stout glass into a tall thin one.

Psychologists have since demonstrated that young children, asked to count the pencils in a pile, readily report the number of blue or red pencils, but must be coaxed into finding the total. Such studies have suggested that the rudiments of mathematics are mastered gradually, and with effort. They have also suggested that the very concept of abstract numbers--the idea of aloneness, a prerequisite for doing anything more mathematically demanding than setting a table—is itself far from innate.

　　 1. What's the main idea about this passage?

　　　　 A. The use of mathematics in child psychology.

　　　　 B. Trends in teaching mathematics to children.

　　　　 C. The development of mathematical ability in children.

　　　　 D. The fundamental concepts of mathematics that children must learn.

　　 2. It can be inferred from the passage that children normally learn simple counting——.

　　　　 A. soon after they learn to talk 

B. after they reach second grade in school

　　　　 C. by looking at the clock

　　　　 D. when they begin to be mathematically mature

　　 3. According to the passage, when small children were asked to count a pile of red and blue pencils they——.

　　　　 A. counted the number of pencils of each color

　　　　 B. counted only the pencils of their favorite color

　　　　 C. guessed at the total number of pencils

　　　　 D. subtracted the number of red pencils from the number of blue pencils

　　 4. What does the word “They” (Para. 3, Line 5) refer?

　　　　 A. Children　　    B. Pencils　　    C. Mathematicians  　　 D. Studies

 

People appear to be born to compute. The numerical skills of children develop so early and so inexorably that it is easy to imagine an internal clock of mathematical maturity guiding their growth. Not long after learning to walk and talk, they can set the table with impressive accuracy—one plate, one knife, one spoon, one fork, for each of the five chairs.  Soon they are capable of noting that they have placed five knives, spoons and forks on the table and, a bit later, which this amounts to fifteen pieces of silverware. Having thus mastered addition, they move on to subtraction. It seems almost reasonable to expect that if a child were secluded on a desert island at birth and received seven years later, he or she could enter a second grade mathematics class without any serious problems of intellectual adjustment.

Of course, the truth is not so simple. This century, the work of cognitive psychologists has illuminated the subtle forms of daily learning on which intellectual progress depends. Children were observed as they slowly grasped or, as the case might be bumped into concepts that adults take for granted, as they refused, for instance, to concede that quantity is unchanged as water pours from a short stout glass into a tall thin one.

Psychologists have since demonstrated that young children, asked to count the pencils in a pile, readily report the number of blue or red pencils, but must be coaxed into finding the total. Such studies have suggested that the rudiments of mathematics are mastered gradually, and with effort. They have also suggested that the very concept of abstract numbers--the idea of aloneness, a prerequisite for doing anything more mathematically demanding than setting a table—is itself far from innate.

　　 1. What's the main idea about this passage?

　　　　 A. The use of mathematics in child psychology.

　　　　 B. Trends in teaching mathematics to children.

　　　　 C. The development of mathematical ability in children.

　　　　 D. The fundamental concepts of mathematics that children must learn.

　　 2. It can be inferred from the passage that children normally learn simple counting——.

　　　　 A. soon after they learn to talk 

B. after they reach second grade in school

　　　　 C. by looking at the clock

　　　　 D. when they begin to be mathematically mature

　　 3. According to the passage, when small children were asked to count a pile of red and blue pencils they——.

　　　　 A. counted the number of pencils of each color

　　　　 B. counted only the pencils of their favorite color

　　　　 C. guessed at the total number of pencils

　　　　 D. subtracted the number of red pencils from the number of blue pencils

　　 4. What does the word “They” (Para. 3, Line 5) refer?

　　　　 A. Children　　    B. Pencils　　    C. Mathematicians  　　 D. Studies

 

London: What could possibly he wrong with planting trees? The benefits are obvious: they firm the soil, absorb extra water and take carbon dioxide out of the atmosphere.
However, it now turns out that planting trees could add to global warming. Tree roots do a great job of keeping soil firmly on the ground and out of the wind's power. The problem is that some of those dust clouds play an important part in taking in carbon dioxide.
Huge dust storms blow out over the oceans from dry parts of North Africa and central Asia. Tons of dust are lifted and left as a thin film over the ocean surface.
Dust from China is carried east and left in the Pacific Ocean. If a tree-planting program there is successful and the dust supply reduced, the final result may be that less carbon dioxide gets locked away in the ocean.
Andy Ridgwell, an environmental scientist from the University of East Anglia, has spent the past few years studying dust and says his work shows clearly the complexity of the system and the importance of not working uselessly with it without understanding the results. For this reason the need is to focus on cutting carbon dioxide giving off rather than dealing with the land surface aimlessly.
An American scientist, Robert Jackson, has shown that when native grassland areas are occupied by trees, carbon is lost from the soil. "We are studying why the soil carbon disappears, but one theory is that trees do a lot more of their growing above ground compared to grasses, so less carbon goes directly into the soil from trees. " said Jackson.
In wet areas of the world, the gain from trees absorbing carbon dioxide above ground seems to be outweighed by the loss of carbon from the soil below ground.
Countries that plan to combat global warming by planting trees may have to think again. Solutions to environmental problems are often more complex than they first appear, and understanding the Earth's climate is a very great challenge.
64. People usually hold the opinion that _______.
A. huge dust storms can destroy carbon dioxide
B. huge dust storms can destroy the oceans on the earth
C. planting trees could reduce global warming
D. planting trees is the only way to control huge dust storms
65. Andy Ridgwell, the environmental scientist, believes that _______.
A. environmental problems are more complex than expected
B. trees shouldn't have been planted in dry places
C. dust plays a more important part than trees
D. carbon dioxide is harmful to everything
66. Robert Jackson's experiment proves that _______.
A. carbon can turn grass into dust
B. trees hold more carbon than grass
C. less carbon can make trees grow faster
D. grassland areas should be covered by forests
67. The underlined word "combat" in the last paragraph means _______.
A. learn about        B. give up              C. live with          D. fight against

Battle of the Books
Each year in April, the “Battle of the Books” teams from each school meet for the Semi-Battle competition. The top three teams from each division go on to the Final Battle to compete for gold, silver and bronze medals. The gold medal winners go on to compete in the Regional Championship.
Battle of the Books Rules and Goals
Goals:
Students: Have fun reading good books from a wide variety of authors and genres(体裁).
Educators: Encourage reading, foster friendly competition, and nurture the love of books in young people.
Rules:
One team of six students from grades 7 or 8 will represent each school.
1. Each team will have a spokesperson. While the team is encouraged to discuss possible answers, team answers will only be accepted from the spokesperson.
2. The Semi-Finals will consist of three rounds of play, and the Finals will have one round. Each round features a Regular Battle and a Lightning Battle.
3. Regular Battle questions will be addressed to teams alternately(轮流地), regardless of the last correct answer. There will be 12 Regular Battle questions per round. When asked a question, teams will have 20 seconds to provide the book’s title and author.
4. Five points will be given if the team correctly identifies the exact title, and three points will be awarded for correctly identifying the author’s surname. The author’s first name does not need to be identified.
5. The Lightning Battles will be featured at the end of each round. Lightning Battles consist of a 2 minutes, 30 seconds time period during which each team is asked up to 12 questions. These questions concern details of the books and will not require teams to identify titles or authors. Each correctly answered Lightning Battle question will be worth three points.
PLEASE NOTE:
A warm-up practice question will be given to each team at the beginning of its first Semi-Battle and at the beginning of the Final and Regional Final Battles.
There may be no assistance from the coordinators and audience members.
Teams will not be punished for incorrect answers.
Any team demonstrating poor sportsmanship will not be invited back.
【小题1】According to the text, “Battle of the Books” is an activity ______.

A．where students are inspired to write books
B．where books are used as arms in the battle
C．where friends compete with each other
D．where readers are motivated to love books
【小题2】How many questions will be asked in the Semi-Finals?
A．72B．24C．36D．12
【小题3】What information can we get from the text?
A．Teams are given 20 minutes to answer a question.
B．A competitor gets 18 points for 6 correct titles.
C．Each round ends with the Lightning Battles.
D．A correct first name will be given 5 points.
【小题4】If a team doesn’t compete fairly, it ______.
A．won’t be given a warm-up practiceB．won’t get help from audience members
C．will be reduced in its pointsD．won’t be allowed to compete next time

Sitting on a chair all day in school can make anyone want to move around. So, more and more teachers are letting students have a ball. By sitting on exercise balls instead of chairs , teachers find students’ posture(姿势) and attention improve.
Dottie Pownall, a fifth-grade teacher in West Virginia, USA, has been using balls as chairs since December 2008. “The students love them”, she says. Pownall took a survey(调查) of her students. She found that 80% of the students thought sitting on the balls helped them pay more attention to what they were learning.
The teacher, Pisa Witt, felt so strongly about the use of balls as chairs, she started Witt Fitt. This company encourages the use of the balls. And the company educates not only teachers but also students on how to use them. “Our products are used in 24 states, three provinces in Canada, Puerto Rico (波多黎各) and Japan,” says Witt, “ Research shows that sitting on the balls makes them sit up straighter（直的）. You can slouch(低头垂肩地坐)on a ball,” says Witt, “but it feels bad.” Because the students are moving, their blood (血液) increases. That carries more oxygen( 氧气) to the brain , so the kids have more energy and can pay attention longer.
“Besides, they’re fun.” says Pownall.
【小题1】What will happen if a student sits on a chair all day in school? The student will_________.

A．pay more attention to his lessonsB．be fun
C．like to move aroundD．sit up straighter
【小题2】How long has Dottie Pownall used the balls?
A．About four years.B．Only one year.
C．In 2008.D．Since he was a fifth-grade teacher.
【小题3】In how many countries are the balls used as the students’ chairs?
A．Four.B．Three.C．Two.D．One.
【小题4】Teachers choose balls instead of chairs because sitting on balls helps the kids _________.
A．improve the students’ posture and attention
B．slouch on the chairs
C．have fun
D．Both A and C are correct answers
【小题5】Which is better for kids to study in class, sitting on a chair or sitting on a ball?
A．Sitting on a chair.B．Sitting on a ball.
C．They are the same.D．We don’t know.

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