题目内容
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
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(参与其中的) approach. When you tell a child about morals, you also have to deal with social norms（规范）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.
【小题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．advise 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. |
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 (数据) 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 |