Most American kids love Halloween treats, but a bucket of Halloween candy can be a dentist's nightmare. Some parents try to get rid of half of the candy after their children go to bed, but dentists say parents also need to separate the good kinds of treats from the bad.
It is not exactly what a child eats that truly matters, but how much time it stays in his mouth. According to pediatric dentist Dr. Kaneta Lott, the most damaging stuff is something that is sticky or very hard and thus stays in the mouth for a long time. This is because we all have bacteria in our mouths. When we eat, the bacteria take our food as their food and produce an acid that destroys the surface of the teeth, causing cavities to form. The longer the food stays in the mouth, the more likely cavities will develop. Therefore, potato chips are worse than candy because they get stuck between teeth. For the same reason, raisins and crackers are not the best choice. Hard candies take a long time to consume and are also a bad choice for Halloween treats.
If children really love candy, dentists recommend that they eat chocolate instead. Unlike hard candies, chocolate dissolves quickly in the mouth. Besides, chocolate contains tannins, which help to kill some of the bacteria in the mouth. But no matter what a child eats, brushing after eating is still the best way to fight cavities. What is the main purpose of this passage?
| A．To discuss how cavities can be treated. |
| B．To point out the problems with Halloween celebrations. |
| C．To tell parents what sweets are less damaging to their children's teeth. |
| D．To teach parents the meaning of Halloween candies for their children. |
Why are hard candies especially bad for teeth?
| A．They may break the child's teeth. |
| B．They contain too much sugar. |
| C．They help bacteria to produce tannins， |
| D．They stay in the mouth for a long time. |
According to the passage, which of the following is a better choice for Halloween treats?
A. Chocolate. B. Crackers.
C, Raisins. D. Potato chips. According to the passage, which of the following is true of tannins?
| A．They are produced when the bacteria digest the food. |
| B．They help to get rid of some bacteria in the mouth. |
| C．They help chocolate to dissolve more quickly. |
| D．They destroy the surface of the teeth. |
As the pace of life continues to increase, we are fast losing the art of relaxation. Once you are in the habit of rushing through lift, being on the go from morning till night, it is hard to slow down. But relaxation is essential for a healthy mind and body.
Stress is a natural part of everyday life and there is no way to avoid it. In fact, it is not the bad thing it is often supposed to be. A certain amount of stress is vital to provide motivation and give purpose to life. It is only when the stress gets out of control that it can lead to poor performance and ill health.
The amount of stress a person can withstand depends very much on the individual. Some people are not afraid of stress, and such characters are obviously prime material for managerial responsibilities. Others lose heart at the first signs of unusual difficulties. When exposed to stress, in whatever form, we react both chemically and physically. In fact we make choice between "fight" or "flight" and in more primitive days the choice made the difference between life or death. The crises we meet today are unlikely to be so extreme, but however little the stress is, it involves the same response. It is when such a reaction lasts long, through continued exposure to stress, that health becomes endangered. Such serious conditions as high blood pressure and heart disease have established links with stress. Since we cannot remove stress from our lives (it would be unwise to do so even if we could), we need to find ways to deal with it.People are finding less and less time for relaxing themselves because_____.
| A．they do not know how to enjoy themselves | |
| B．they do not believe that relaxation is important for health | C．they are travelling fast all the time |
| D．they are becoming busier with their work |
According to the writer, the most important character for a good manager is his ________.
| A．not fearing stress | B．knowing the art of relaxation |
| C．high sense of responsibility | D．having control over performance |
Which of the following statements is true?
| A．We can find some ways to avoid stress. |
| B．Stress is always harmful to people. |
| C．It is easy to change the habit of keeping oneself busy with work. |
| D．Different people can withstand different amounts of stress. |
In Paragraph 3, "such a reaction" refers back to_______.
| A．"making a choice between 'flight' or 'fight'" |
| B．"reaction to stress both chemically and physically" |
| C．"responding to crises quickly" |
| D．"losing heart at the signs difficulties" |
In the last sentence of the passage, "do so " refers to ______.
| A．"expose ourselves to stress" |
| B．"find ways to deal with stress" |
| C．"remove stress from our lives" |
| D．"established links between diseases and stress" |
One hot night last July, when our new baby wouldn’t or couldn’t sleep, I tried everything I could think of : a warm bottle, songs gentle rocking. Nothing would settle him down. Guessing that I would have a long night ahead of me, I brought a portable (便携式)TV into his room, figuring that watching the late movie was as good a way as any to kill off the hours till dawn. To my surprise, as soon as the TV lit up, the baby quieted right now, his little eyes focused brightly on the tube. Not to waste an opportunity for sleep, I then walked out of the room, leaving him to watch the actors celebrate John Bellushi's forty-fifth birthday.
My wife and I heard no more of the baby that night, and the next morning when I went into his room, I found him still watching TV himself. I found in my baby's a metaphor（启示）for the new generation. My wife and I had given him some books to examine, but he merely spit upon them. When we read to him, he did not feel comfortable. And so it is in the schools. We find that our students don't read , that they look down upon reading and scold those of us who teach it. All they want to do is watching TV.
After this experience with the baby, however, I have reached a conclusion: “Let them watch it!” If television is that much more attractive to children than books, why should we fight it? Let them watch it all they want! Father brought a TV set into his son's room____.
| A．to stop his son crying | B．to let him learn something |
| C．to make him frightened | D．to let his son spend a good night |
To the couple’s surprise the boy ___after they brought a TV set into his room.
| A．soon fell asleep | B．cried all that night |
| C．became quiet and silent | D．slept quite well that night |
Form the last paragraph we know that the writer thinks it____.
| A．terrible for children to watch so many TV programmes |
| B．useless for parents to blame their children |
| C．necessary for TV stations to improve their TV programmes |
| D．favorable for children to watch the programmes they like |
There are many commonly held beliefs about eyeglasses and eyesight that are not proved facts. For example, some people believe that wearing glasses too soon weaken the eyes. But there is nothing to show that the structure (结构) of eyes is changed by wearing galsses at a young age. Wearing the wrong galsses, however, can prove harmful. Studies show that only children can develop loss of sihgt if they have the wrong glasses. We have all heard some of the common myths(荒诞的说法)about how eyesight get bad. Too little light makes the eyes work harder, so they do get tired and strained (过劳). Eyestrain also resulsts from reading a lot, reading in bed, and watching too much television. But, although eyestrain may cause some pain or headaches, it does not harm eyesight all the time. Another myth about eyes is that they can be replaced from one person to another . It is quite difficult to connect aneyeball to a new brain.And it is impossible to replace a whole eyeball to a new person. Only certain parts of the eye can be replaced now. But if we keep clearing up the myths and learning more about the eyes, some day it may be possible to replace a full eyeball.One cause of eyestrain mentioned in the passage is ____. .
| A．wearing eyeglasses too long | B．going to the cinemas |
| C．reading a lot | D．not visiting your eye doctor |
From this passage one can conclude that ____. .
| A．doctors are still learning things about eyesight | B．headcaches are usually caused by eyestain |
| C．people should wear glasses as soon as possible | D．people only believe things that are proved facts |
"Commonly held beliefs" are ____. .
| A．ideas that only low class people believe | B．ideas that moet people believe |
| C．beliefs that have something in common | D．foolish beliefs |
This passage mainly tells us that ____.
| A．people have many wrong beliefs about eyes and sight. |
| B．there are many things about the body that are not completely understood |
| C．there are several cuases of eyestrain |
| D．eyes are very important to people |
Parents often believe that they have a good relationship with their teenagers (青少年). But last summer, Joanna and Henry noticed a change in their older son. Suddenly he seemed to be talking far more to his friends than to his parents. "The door to his room is always shut," Joanna noted.
Tina and Mark noticed similar changes in their 14-year-old daughter. "She used to cuddle up (蜷伏)with me on the sofa and talk," said Mark. "Now we joke that she does this only when she wants something. Sometimes she wants to be treated like a little girl and sometimes like a young lady. The problem is figuring out which time is which."
Before age 11, children like to tell their parents what's on their minds. "In fact, parents are first on the list," said Michael Riera, author of Uncommon Sense for Parents with Teenagers. "This completely changes during the teen years," Riera explained. "They talk to their friends first, then maybe their teachers, and their parents last."
Parents who know what's going on in their teenagers' lives are in the best position to help them. To break down the wall of silence, parents should create chances to understand what their children want to say, and try to find ways to talk and write to them. And they must give their children a mental break, for children also need freedom, though young. Another thing parents should remember is that to be a friend, not a manager, with their children is a better way to know them.. "The door to his room is always shut" suggests that the son ____.
| A．is always busy with his studies | B．doesn't want to be disturbed |
| C．keeps himself away from his parents | D．begins to dislike his parents |
What troubles Tina and Mark most is that .
| A．their daughter isn't as lovely as before |
| B．they can't read their daughter's mind exactly |
| C．they don't know what to say to their daughter |
| D．their daughter talks with them only when she needs help |
Which of the following best explains "the wall of silence" in the last paragraph?
| A．Teenagers talk a lot with their friends. |
| B．Teenagers do not want to understand their parents. |
| C．Teenagers do not talk much with their parents. |
| D．Teenagers talk little about their own lives. |
What can be learned from the passage?
| A．Parents are unhappy with their growing children. |
| B．Parents have suitable ways to talk with their teenagers. |
| C．Parents should be patient with their silent teenagers. |
| D．Parents should try to understand their teenagers. |
475 Riverside Drive
New York N.Y. 10027
Jan.15, 2011
Dear John,
I'm sorry you didn't get the part you tried out for in that play. I know how much you wanted to be in the play. Now you feel that maybe acting isn't the right future for you. I think you're wrong. You're a good actor. Do you remember when you played Caesar in your summer theatre group's play? You were excellent . People clapped(鼓掌)every time you walked on stage（舞台). Even the other actors loved you.
All actors have to get used to being turned down for a job. It's part of an actor's life. Even famouse actors don't get every part they want. I think you should give acting another chance. You love it so much, and you're good at it. Don't be discouraged because you lose one part in the play. Wait a bit, and try for another one. After all , you can always give up some other time.
Love,
JaneJane wrote this letter because____.
| A．she wanted John to get a part in the play he was trying out for |
| B．she wanted to tell John that he shouldn't give up acting. |
| C．she wanted to tell John how to become an actor. |
| D．she was unhappy with John. |
Jane talks about other actors to show Jon that ____.
| A．they are as bad as he is | B．acting is a hard life |
| C．they sometimes get turned down for parts they want | D．they are lucky enough |
What does Jane think of John?
| A．He is a good actor, and some day he will be successful. |
| B．He is too easily dicouraged to become a good actor. |
| C．He is a better actor than the person who has got the part. |
| D．He is as unlucky as the other actors. |
The person who wrote this letter probably ____.
| A．is an actress. | B．cares about John |
| C．wants to be an actress some day | D．envies at John's success. |