Most schools ban chewing gum,but in a few years they might consider changing that rule.Why? Scientists are finding evidence that gum chewing may be good for your health.It may even help boost(提高)your test scores.
This exciting research is just beginning.And in the meantime,companies are also experimenting with adding vitamins,minerals,medicines,and other substances that could give gum the power to cure headaches and fight everything from serious diseases to bad breath.
People have been chewing gum for thousands of years.Ancient Greeks,Mayas,and Native Americans,for example,chewed on the sap,or resin of certain types of trees.Today gum is a litde more complicated.Gum manufacturers start by mixing resin,wax,and a molecule called polyvinyl acetate to make a gum base.By varying the types and amounts of these ingredients,scientists can make thousands of formulations.
Just what can gum do for your health?Many studies show that chewing gum after meals fights cavities(洞)by stimulating the production of saliva.Saliva helps wash away bacteria that damage our teeth.An ingredient called xylitol,which is added to it,provides an extra dose of cavity-fighting power.This is good for more than just the teeth.Research suggests that good oral health decreases the risk of heart disease,and other serious diseases.
Chewing gum might also be good for your brain.Chewing gum boosts the flow of blood to participants’brains by 40 percent.
But too much chewing can damage the jaw joint.And chewing too much of gum that contains vitamins,caffeine,or a medicine could lead to an overdose.What’s a more,no matter how healthy gum chewing proves to be,it will never be a match for a healthy lifestyle.
Nothing like gum or a vitamin is going to cure a bad dietary habit or a bad exercise habit;it’s not a magic bullet.
64.Why are companies trying to put medicines into gum?
A.Because they want gum to cure some diseases.
B.Because they wish people to become addictive to it.
C.Because they plan to make gum more tasteful.
D.Because they hope to make gum good for teeth.
65.From the last two paragraphs,we can infer that .
A.chewing gum has a magic power to cure your bad lifestyle
B.chewing gum can’t replace the healthy lifestyle
C.chewing gum can lead to a bad exercise habit
D.too much gum chewing proves to be harmful to your teeth
66.How does chewing gum fight cavities?
A.By making people brush teeth immediately after meals.
B.By killing bacteria that are harmful to our teeth.
C.By making people produce more saliva.
D.By adding some more medicines to the gum.
67.The best title for the passage may be .
A.A Match for Exercise B.Gum Chewing is a Magic Bullet
C.No Gum Chewing at School D.Chewing Gum for Health
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科目:高中英語 來源: 題型:閱讀理解
In America, when the eighth graders leave the middle school, they are often worried about moving to the high school. It is a hard time for them,but it can be an exciting one as well. To make it easier, students need to get familiar with their school.
Even though they’ve done this already in the middle school, it’s still important to find where their classrooms are. Most schools take students to the high school for a visit at the end of their eighth grade year. And, most schools also have a freshman (新生) speech for parents and students before the first year begins. Sometimes the main office will give away a map of the school. This can help students and parents to find different places in the school.
One way to know your high school more and make new friends is to join a club or play a sport.Schools often offer chances to join different clubs and sports. Fall activities begin in August before the first day of school. If you are not interested in sports, there are clubs for any interest, such as drama, dance, chess, photography, community service, etc. These clubs allow students from different grades. By joining an activity, students can find new friendships, not to mention improving their chances in future college applications(申請). The school office will have a list of activities offered at the school and information on how to join them.
What’s more, to have a great start to a high school year, students can write down some of their worries, and ask for help from teachers and school workers.
According to the text, most students feel ________ when entering the high school.
A. unhappy B. nervous C. lonely D. disappointed
Which of the following is TRUE about the school clubs?
A. There are fewer students from higher grades in the school clubs.
B. The school clubs in high school mainly welcome sports fans.
C. Summer activities begin before school starts.
D. School officers can help new students join school clubs.
When do many schools take students to visit their new high school?
A. Before the eighth grade year starts.
B. Right after the high school year starts.
C. At the beginning of the new term in the high school.
D. By the end of the last year in the middle school.
What is the purpose of this text?
A. To describe high school life.
B. To introduce new schools.
C. To teach useful experience.
D. To give advice to new high school students.
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科目:高中英語 來源: 題型:閱讀理解
The strong fear of high school math is lost here among the blue light of computer screens and the sounds of typing keyboard.
A fanfare (喇叭聲) plays from a speaker as a student passes a chapter test.Nearby another student is watching a video lecture.Another works out a math problem in her notebook before clicking on a multiple-choice answer on her screen.
Their teacher at Agoura High School, US, Russell Stephans, sits at the back of the room, watching as scores pop up in real time on his computer grade sheet.One student has passed a level, the data shows; another is retaking a quiz.
"Whoever thought this up makes life so much easier," Stephans says.
This textbook-free classroom is by no means the norm(常態(tài)), but it may be someday.Slowly, but in increasing numbers, schools across the US are replacing the heavy and expensive textbook with its lighter and cheaper cousin: the digital textbook.
A digital textbook can be downloaded, projected and printed, and can range from simple text to a course filled with multimedia and links to Internet content.Some versions (版本) must be purchased; others are "open source" —free and available online to anyone.
Some praise the technology as a way to save schools' money, replace outdated books and better engage students.Others say most schools don't have the resources to join in, or they question the quality of open-source content.
Paper books still hold the highest percentage of the US textbook market, with digital textbooks making up less than 5 percent, according to analyst Kathy Mickey of Simba Information, a market research group.
But that is changing, as grade schools follow the lead of US universities and schools in other countries, including South Korea and Turkey.
California made the largest embrace (擁抱) of digital textbooks this summer when it approved 10 free high school math and science titles developed by college professors.The state left the choice to use them up to individual schools.
"The textbooks are outdated, as far as I'm concerned, and there's no reason why our schools should have our students pull around these old-fashioned and heavy and expensive books," Governor Arnold Schwarzenegger said this summer.
But some disagree with the idea that digital textbooks will improve education quality.
"Keep in mind that with open-source materials, you have to ask: 'Where are they coming from?'" said Jay Diskey, executive director of the Association of American Publishers' school division."Is it a trusted source? Is it based on real research?"
Diskey said traditional textbooks offer a comprehensive course, while some open-source texts provide only bits and pieces."There can be quite a difference of content and accuracy," he said."In many cases, you get what you pay for."
The writer's purpose in writing the passage is to ____ .
A.explain how to use digital textbooks
B.predict the future of paper textbooks
C.describe the current use of digital textbooks and present arguments about it
D.explain the difference between paper textbooks and digital ones
What is Schwarzenegger's opinion of traditional textbooks?
A.He is against getting rid of them.
B.He wants to have them replaced with digital ones.
C.Soon they will no longer be used.
D.He believes that they are to blame for the poor quality of education in California
Diskey holds the view that .
A.the government shouldn't strengthen the use of open-source digital texts
B.digital textbooks make up for the shortcomings of traditional textbooks.
C.paper textbooks and digital ones both have advantages
D.traditional textbooks have more reliable content
According to the text, which of the following is TRUE?
A.Math is easier with the use of computers.
B.It is believed that digital books will replace traditional ones.
C.Textbook-free classes are the main form of teaching in the US schools.
D.Not all people are in favor of replacing paper textbooks with digital ones.
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科目:高中英語 來源:2013屆山西省太原五中高三下學(xué)期5月月考英語卷(帶解析) 題型:閱讀理解
Moral science is taught as a subject in most schools but with little effect. Perhaps part of the problem lies in the fact that morality is not a science, strictly speaking. It is too much of a social phenomenon, and also has too much of the personal and subjective things mixed within. Besides, morality itself changes with generations. So it is impossible to be defined in a textbook.
I remember sitting through forty minutes of moral lessons, which told stories about little children who never told lies and were rewarded for their goodness. It had little effect and left no impression on me, though.
If moral science has to be taught as a subject in schools, it needs a participatory(參與其中的) approach. When you tell a child about morals, you also have to deal with social norms(規(guī)范)and cultural differences. You have to explain that morality can be subjective, and be able to co-exist in society. You will probably have to refer to the morals of the present time.
The best way to tell a child how to live is to show him what is valued. If a child likes his friend, you have to make the child think about why. Once the child notices and recognizes goodness in others, he or she is likely to develop it as well.
In fact, children learn most of their morals by watching people around them. They absorb behavior patterns from teachers and older students. They watch to see what is rewarded and who is punished. They learn on the sports field and through social work. Moral science lessons should simply consist of letting them live and interact, and watch you support correct values and reward good behavior.
【小題1】Which is NOT the reason that moral science is taught in schools but with little effect?
A.Morality doesn’t strictly belong to a science. |
B.Morality is more like a social phenomenon. |
C.Morality can’t be written down in textbooks. |
D.Different generations have different moral ideas. |
A.explain telling lies is not moral for little children |
B.a(chǎn)dvise people should be rewarded for their goodness |
C.show he has no opinions about moral science |
D.prove moral lessons in schools have little effect |
A.teach him to share personal moral ideas with others |
B.tell him about social norms and cultural differences |
C.explain that nobody can influence his moral ideas |
D.say that the present morals are likely to be changed |
A.The influence of people’s behavior on morals. |
B.The value of teachers’ setting a good example. |
C.The best way of teaching children about morals. |
D.The importance of rewarding good behavior. |
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科目:高中英語 來源:2014屆四川雙流縣三校高三上期第一次學(xué)生階段性學(xué)習(xí)情況評(píng)估檢測英語卷(解析版) 題型:閱讀理解
When Andrea Peterson landed her first teaching job, she faced the daunting task of creating a music program with almost no money for equipment or supplies in a climate where standards-based learning was the focus and music just provided a break for students and teachers.
For her drive and creativity in overcoming those challenges, she’s been named national teacher of the year.
Principal Waynes Kettler said he’s worked with many outstanding teachers in his 22 years as an educator, but Peterson is “just that one step above anybody I’ve ever worked with before.”
Kettler and others at Monte Cristo Elementary School talk about the ways she has introduced the learning from other classrooms into her music program and her creativity in working around things such as the lack of money for new music.
When students were reading S.E. Hinton’s novel The Outsiders in their regular classroom, Peterson helped them write a 30-minute play with scenes from the book. Then they chose three Broadway tunes that focused on race, equality and social justice, the themes of the book. Peterson composed two other songs herself after classroom discussions about the play and the book.
The honor means a lot to residents of Granite Falls. It’s inspiring to know that people from small towns can even win national honors.
As national teacher of the year, Peterson will spend the next year outside the classroom, as a national and international spokeswoman for education.
Not surpassingly, she is a big believe in the value of acts education. She said it’s essential for schools to offer classes such as act or music and physical education because for some kids one of those subjects is the only thing that motivates them to come back to school day after day.
1.The underlined word “daunting” in Paragraph 1 most probably means __________.
A.discouraging B.interesting
C.creative D.unbearable
2.When Peterson began her teaching career, ____________.
A.music was a focus of learning in most schools
B.the environment was favorable to music teaching
C.the school lacked teaching facilities for music
D.financial support for music programs was unavailable
3.What is the most important reason that Peterson won the award?
A.She concerned herself with current social problems.
B.She motivated students to learn music with her creativity.
C.She has taught music at the elementary school for 22 years.
D.She made great efforts to arouse students’ interest in literature.
4.Which of the following is an example of Peterson’s way of teaching music?
A.She wrote plays on themes of race, equality and social justice.
B.She made use of the contents of other classes in her teaching.
C.She organized classroom discussions of Broadway tunes.
D.She helped students compose songs by themselves.
5.In Peterson’s opinion, ____________.
A.a(chǎn)rt, music and PE classes are all important
B.more subjects should be offered to students
C.students should be motivated to attend art classes
D.a(chǎn)rts education is more important than other subjects
6.It can be inferred from the text that ________.
A.Peterson’s honor was a surprise for the local people
B.Peterson’s art classes attracted students back to school
C.Peterson aroused the local residents’ passion for music
D.Peterson will change her profession next year
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科目:高中英語 來源:2014屆安徽省高二第一次月考英語試卷(解析版) 題型:閱讀理解
Dr. Julie Coulton, a British psychologist, focuses her research on the extraordinary function of the play in the physical and spiritual development of children and Martti Bergson from the University of Helsinki shows that playing outside, in the open air, contributes to a better development of the brain.
Thus parents must encourage their children to spend as much time as possible in the open air, and at the same time, to ask schools and kindergartens to assure the small a playground outside. Recent statistics (數(shù)據(jù)) and studies show an alarming increase of the number of hours spent by children in front of the TV and the computer and a decrease of the time spent outside.
As a consequence more and more children suffer from eye problems and have to wear glasses. Also the problem of fatness among children concerns many parents who don't know what to do anymore to make their children eat healthy and balanced.
Children need a space where to develop their creativity mid parents should encourage them all the time. Too many rules hold back the child's personality and creativity and prevent them to develop the desire to know, to find out, to learn.
If you tell your child so many times: "Don't do that, don't mess the room, don't go there ...", he will lose the desire to do something, anything. Parents must watch their children without suffocating (窒息) them. Should you consider they mustn't do that or this, you have to logically explain them your reasons and they will understand.
Through playing a child learns how to communicate, how to take decisions. Playing is connected to the intellectual, emotional and social progress of the child. Playing lets your children learn how to express his feelings.
1.What is worrying the scientists is that ______.
A.most parents pay no attention to their children's playing |
B.most schools and kindergartens have no playgrounds |
C.most parents encourage their children to watch TV or go surfing |
D.most children spend more time on TV or tile Internet than on playing outside |
2.Children who watch TV or surf the Internet too much may suffer all the following EXCEPT .
A.eye problems |
B.weight problems |
C.lack of creativity |
D.lack of interest in their lessons |
3.The author advises us ______.
A.to allow children to do whatever we want them to do |
B.never to forbid children to do anything they want to do |
C.to explain why when you don't let children do something |
D.to watch children playing anytime to ensure their safety |
4.Which would be a best title for this passage?
A.How to develop the brain of your children better |
B.Playing is good for your children in many aspects |
C.Teaching your children what and how to play |
D.Don't forbid your children to do anything |
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