Bad teeth can be painful and even be deadly. Infections of the gums(牙齦) and teeth can release bacteria into the blood system. Those bacteria can increase the chance of a heart attack or stroke and worsen the effects of other diseases. And adults are not the only ones at risk. For example, a 12­year­old boy died when a tooth infection spread to his brain in 2007 in Washington. Experts said it might have been prevented had he received the dental care he needed.
Experts say good dental care starts at birth. Breast milk, they say, is the best food for the healthy development of teeth. Breast milk can help slow bacterial growth and acid production in the mouth. But dentists say a baby's gums and early teeth should be cleaned after each feeding by using a cloth with a little warm water. Experts say if you decide to put your baby to sleep with a bottle, give only water.
When baby teeth begin to appear, you can clean them with a wet toothbrush. Dentists say it is important to find soft toothbrushes made especially for babies and to use them very gently. The use of fluoride(氟化物) to protect teeth is common in many parts of the world. For example, it is often added to drinking water supplies. The fluoride mixes with enamel(釉質(zhì)), the hard surface on teeth, to help prevent holes from forming.
But young children often swallow toothpaste when they brush their teeth. The American Academy of Pediatric Dentistry notes that swallowing fluoridated toothpaste can cause problems. So young children should be carefully watched when they brush their teeth. And only a small amount of fluoridated toothpaste, the size of a pea, should be used.
Parents often wonder what effect finger sucking might have on their baby's teeth. Dental experts generally agree that this is fine early in life. Most children stop sucking their fingers by the age of four. If it continues, experts advise parents to talk to their children's dentists or doctors. Because it could interfere_with the correct development of permanent teeth.
Dentists say children should have their first dental visit at least by the time they are one year old. They say babies should be examined when their first teeth appear—usually at around six months.
小題1:According to the passage，what is the function of fluoride?
A．Making the surface on teeth much cleaner.
B．Protecting gums from being infected.
C．Keeping holes on teeth from forming.
D．Slowing down bacterial growth and acid production.
小題2:The underlined phrase “interfere with” in Para.5 probably means “________”．
A．do harm toB．a(chǎn)ccount for
C．contribute toD．stand for
小題3:What is the purpose of the author in writing the passage?
A．To warn us of the deadly infections of gums and teeth.
B．To introduce the advantages of fluoridated toothpaste.
C．To draw our attention to the dental care of young children.
D．To present the research results about dental care.

小題1:C
小題2:A
小題3:C

小題1:答案：C　細(xì)節(jié)理解題。根據(jù)第三段最后一句“The fluoride mixes with enamel(釉質(zhì))，the hard surface on teeth，to help prevent holes from forming.”可知，答案為C項(xiàng)。
小題2:答案：A　詞義猜測(cè)題。根據(jù)上文中“大多數(shù)孩子到四歲就不吮吸手指了。但如果繼續(xù)的話，專家建議父母要去和孩子的牙醫(yī)或兒科醫(yī)生談一談”，以及該短語(yǔ)所在句的內(nèi)容可推知，do harm to“損害”與該短語(yǔ)的意思最為接近。
小題3:答案：C　推理判斷題。根據(jù)最后一段的內(nèi)容可推知作者寫這篇文章旨在提醒父母要關(guān)注小孩子的牙齒健康。故選C項(xiàng)。
疑難詞匯解讀
1．bacteria n．細(xì)菌
bacterial contamination細(xì)菌感染
2．suck vt.吮吸，嘬
suck milk through a straw用吸管吸牛奶喝
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科目：高中英語(yǔ) 來(lái)源：不詳 題型：閱讀理解

The triathlon(鐵人三項(xiàng)運(yùn)動(dòng)) promises to be one of the most popular Olympic sports.Recently it has drawn huge crowds attracted by athletes swimming 1,500m，cycling 40km，then running 10km without stopping.But what makes an attractive 17­year­old girl give up everything for the doubtful pleasure it offers?
Melanie Sears has not yet learnt those often­repeated phrases about personal satisfaction，mental challenge and higher targets that most athletes use when asked similar questions.“You swim for 1,500m，then run out of the water and jump on your bike，still wet.Of course，then you freeze.When the 40km cycle ride is over，you have to run 10km，which is a long way when you’re feeling exhausted.But it’s great fun，and all worth it in the end，” she says.
Melanie entered her first triathlon at 14 and she won the junior section.Full of confidence，she entered the National Championships，and although she had the second fastest swim and the fastest run，she came nowhere.“I was following this man and suddenly we came to the sea.We realised then that we had gone wrong.I ended up cycling 20 kilometres too far.I cried all the way through the running.”
But she did not give up and was determined that she never will.“Sometimes I wish I could stop，because then the pain would be over，but I am afraid that if I let myself stop just once，I would be tempted(誘惑) to do it again.”Such doggedness draws admiration from Steve Trew，the sport’s director of coaching.“I’ve just been testing her fitness，” he says, “and she worked so hard on the running machine that it finally threw her off and into a wall.She had given it everything，and she just kept on.”
Melanie was top junior in this year’s European Triathlon Championships，finishing 13th.“I was almost as good as the top three in swimming and running，but much slower in cycling.That’s why I’m working very hard at it.” She is trying to talk her long­suffering parents，who will carry the ￡1,300 cost of her trip to New Zealand for this year’s world championships，into buying a ￡2,000 bike，so she can try 25km and 100km races later this year.
But there is another price to pay.“I don’t have a social life，”she says.“After two hours’ hard swimming on Friday night，I just want to go to sleep.But I phone and write to the other girls in the team.” What does she talk about？Boys？Clothes？“No，what sort of times they are achieving.”
小題1:How does Melanie differ from other athletes，according to the writer?
A．She worries less than they do.
B．She expresses herself differently.
C．Her family background is not like theirs.
D．Her aims are different from theirs.
小題2:What upset Melanie during the National Championships?
A．She was tricked by another competitor.
B．She felt she had let her team­mates down.
C．She made a mistake during part of the race.
D．She realized she couldn’t cycle as fast as she thought.
小題3:What is Melanie trying to persuade her parents to do?
A．Buy an expensive bike for her.
B．Give her half the cost of a bike.
C．Let her compete in longer races.
D．Pay for her to go to New Zealand.
小題4:What does Melanie say about her relationships with her team­mates?
A．She would like to see them more often.
B．She only discusses the triathlon with them.
C．She thinks they find her way of life strange.
D．She dislikes discussing boys or clothes with them.

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科目：高中英語(yǔ) 來(lái)源：不詳 題型：閱讀理解

The Healthy Habits Survey(調(diào)查)shows that only about one third of American seniors have correct habits. Here are some findings and expert advice.
1．How many times did you brush your teeth yesterday?
·Finding：A full 33% of seniors brush their teeth only once a day.
·Step：Remove the 300 types of bacteria in your mouth each morning with a battery－operated toothbrush. Brush gently for 2 minutes, at least twice a day.
2．How many times did you wash your hands or bathe yesterday?
·Finding：Seniors, on average, bathe fewer than 3 days a week. And nearly 30%wash their hands only 4 times a day—half of the number doctors recommend.
·Step：We touch our faces around 3,000 times a day－often inviting germs(病菌)to enter our mouth, nose, and eyes.Use toilet paper to avoid touching the door handle. And, most important, wash your hands often with hot running water and soap for 20 seconds.
3．How often do you think about fighting germs?
·Finding：Seniors are not fighting germs as well as they should.
·Step：Be aware of germs. Do you know it is not your toilet but your kitchen sponge(海綿)that can carry more germs than anything else? To kill these germs, keep your sponge in the microwave for 10 seconds.
小題1:What is found out about American seniors?
A．Most of them have good habits.
B．Nearly 30%of them bathe three days a week.
C．All of them are fighting germs better than expected.
D．About one third of them brush their teeth only once a day.
小題2:Doctors suggest that people should wash their hands ________.
A．twice a dayB．three times a day
C．four times a dayD．eight times a day
小題3:Which of the following is true according to the text?
A．We should keep from touching our faces.
B．There are less than 300 types of bacteria in the mouth.
C．A kitchen sponge can carry more germs than a toilet.
D．We should wash our hands before touching a door handle.
小題4:The text probably comes from________.
A．a(chǎn) guide bookB．a(chǎn) popular magazine
C．a(chǎn) book reviewD．a(chǎn)n official document

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科目：高中英語(yǔ) 來(lái)源：不詳 題型：閱讀理解

閱讀理解: 閱讀下列短文，從每題所給的四個(gè)選項(xiàng)（A、B、C和D）中，選出最佳選項(xiàng)。
It was the summer of 1965. DeLuca, then 17, visited Peter Buck, a family friend. Buck asked DeLuca about his plans for the future. “I’m going to college, but I need a way to pay for it,” DeLuca recalls saying. “Buck said, ‘You should open a sandwich shop.’”
That afternoon, they agreed to be partners. And they set a goal: to open 32 stores in ten years. After doing some research, Buck wrote a check for $1000. DeLuca rented a storefront (店面) in Connecticut, and when they couldn’t cover their start-up costs, Buck kicked in another $1000.
But business didn’t go smoothly as they expected. DeLuca says, “After six months, we were doing poorly, but we didn’t know how badly, because we didn’t have any financial controls.” All he and Buck knew was that their sales were lower than their costs.
DeLuca was managing the store and going to the University of Bridgeport at the same time. Buck was working at his day job as a nuclear physicist in New York. They’d meet Monday evenings and brainstorm ideas for keeping the business running. “We convinced ourselves to open a second store. We figured we could tell the public, ‘We are so successful, we are opening a second store.’” And they did—in the spring of 1966. Still, it was a lot of learning by trial and error.
But the partners’ learn-as-you-go approach turned out to be their greatest strength. Every Friday, DeLuca would drive around and hand-deliver the checks to pay their suppliers. “It probably took me two and a half hours and it wasn’t necessary, but as a result, the suppliers got to know me very well, and the personal relationships established really helped out,” DeLuca says.
And having a goal was also important. “There are so many problems that can get you down. You just have to keep working toward your goal,” DeLuca adds.
DeLuca ended up founding Subway Sandwich, the multimillion-dollar restaurant chain.
1. DeLuca opened the first sandwich shop in order to ____.
A. support his family
B. pay for his college education
C. help his partner expand business
D. do some research
2. Which of the following is true of Buck?
A. He put money into the sandwich business.
B. He was a professor of business administration.
C. He was studying at the University of Bridgeport.
D. He rented a storefront for DeLuca.
3. What can we learn about their first shop?
A. It stood at an unfavorable palce.
B. It lowered the prices to promote sales.
C. It made no profits due to poor management
D. It lacked control over the quality of sandwiches
4. They decided to open a second store because they ___.
A. had enough money to do it.
B. had succeeded in their business
C. wished to meet the increasing demand of customers
D. wanted to make believe that they were successful
5. What contribute most to their success according to the author?
A. Learning by trial and error.
B. Making friends with suppliers.
C. Finding a good partner.
D. Opening chain stores.

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科目：高中英語(yǔ) 來(lái)源：不詳 題型：閱讀理解

Do you love holidays but hate the increase weight that follows? You are not alone.
But every day I went to see the doctor, I had to wait about 50 minutes. He would see two or three patients at the same time, and often stop treating one so as to see another. Yet he charged me $115 each time .The final examination report consisted of ten lines, and it cost me $215.
With proper planning, though, it is possible to control your weight. The idea is to enjoy the holidays but not to eat too much. You don't have to turn away from the foods that you enjoy. The following suggestions may be of some help to you.
Do not miss meals. Before yon leave home for a feast(宴會(huì)),have a small, low-fat snack(小吃). This may help to keep you from getting too excited before delicious foods. Begin with clear soup and fruit or vegetables. A large glass of water before you eat may help you feel full. Use a small plate; a large plate will encourage you to have more than enough.
Better not have high-fat foods. Dishes that look oily or creamy have much fat in them.
Choose lean meat(瘦肉 ).Fill your plate with salad and green vegetables.
If you have a sweet tooth, try mints (薄荷) and fruits. They don’t have fat content as cream and chocolate.
Don’t let exercise take a break during the holidays. A 20-minute walk after a meal can help burn off excess(過(guò)多的) calories.
小題1:Holidays are happy days with pleasure but they may ______
A．bring weight problems
B．bring you much trouble in your life
C．make you worried about your foods
D．make you hate delicious foods
小題2:In order to really enjoy your holidays without putting on weight, you'd better__
A．drink much water and have vegetables only
B．not eat the food in high fat
C．not accept invitations to feasts
D．turn away from delicious foods
小題3:According to the passage, ___ is a necessary part to stop you from putting on weight.
A．VegetablesB．WaterC．calories of energyD．physical exercise
小題4:Many people can't help putting on weight after the holidays because they _______ .
A．can't control themselves
B．go to too many feasts
C．enjoy delicious foods
D．can't help turning away from the foods

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科目：高中英語(yǔ) 來(lái)源：不詳 題型：閱讀理解

Recently a study, led by Pedro Hallal of the Federal University, suggests that nearly a third of adults, 31%, are not getting enough exercise. That rates of exercise have declined is hardly a new discovery. Since the beginning of the industrial revolution, technology and economic growth have helped to create a world in which taking exercise is more and more an option rather than a necessity. But only recently have enough good data been collected from enough places to carry out the sort of analysis Dr Hallal and his colleagues have engaged in.
There are common themes in different places. Unsurprisingly, people in rich countries are less active than those in poor ones, and old people are less active than young ones. Less obviously, women tend to exercise less than men—34% are inactive, compared with 28% of men. But there are exceptions. The women of Croatia, Finland, Iraq and Luxembourg, for example, move more than their male countrymen.
Malta wins the race for most slothful country, with 72% of adults getting too little exercise, and Swaziland and Saudi Arabia are in close behind, with 69%. In Bangladesh, just 5% of adults fail to exercise enough. Surprisingly, six Americans in ten are active enough according to Dr Hallal’s study, compared with fewer than four in ten British.
These high rates of inactivity are worrying. Human beings seem to have evolved(進(jìn)化) to benefit from exercise while deliberately avoiding it whenever they can. In a state of nature it would be impossible to live a life that did not provide enough of it. But that is no longer the case. Actually lack of enough activity these days has nearly the same effect on life span(壽命) as smoking.
小題1:We may learn from Paragraph 1 that_________.
A．the decline of exercise rates is newly discovered
B．the study suggests 31% of female adults get too little exercise
C．the good enough data has been collected from only one country
D．the industrial revolution has changed the way people live to some degree
小題2:According to the study, women of Luxembourg_________. 
A．have little time to exercise
B．hate to get regular exercise
C．take more exercise to lose weight
D．exercise more than men in their country
小題3:The underlined word “slothful” in Paragraph 3 most probably means_________.
A．powerfulB．richC．lazyD．unpopular
小題4:What can be the best title for the text?
A．Worldwide Lack of Enough Exercise
B．New Health Discovery
C．Evolvement of Human Beings
D．Benefits of Taking Exercise

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科目：高中英語(yǔ) 來(lái)源：不詳 題型：閱讀理解

People born in winter are more likely to suffer mental health disorders, according to a recent study carried out by researchers at Vanderbilt University in Tennessee.
Researchers raised baby mice from birth to weaning (斷奶) in either “summer” light cycles of 16 hours of light and 8 hours of dark or “winter” cycles of 8 hours of light and 16 hours of dark. A third group experienced 12 hours of light and 12 hours of dark a day.
Then half the winter mice stayed in a winter cycle, while half switched to a summer schedule. The summer mice were similarly split. The mice raised in equal periods of light and dark were split into three groups, one of which stayed on the 12­hour schedule, one of which joined the winter group, and one of which joined the summer group.
After 28 days, it turns out the summer­born mice behaved the same whether they stayed on the summer cycle or switched to winter. But among the winter­born mice, those stayed in winter kept their previous schedule, while those that switched to summer stayed active for an extra hour and a half, which indicates that mice born and weaned in a winter light cycle showed dramatic disruptions in their biological clocks.
The finding is the first of its kind in mammals, and it could explain why people born in winter are at higher risk for mental health disorders including bipolar depression, schizophrenia and seasonal affective disorder.
“We know that the biological clock regulates mood in humans，”said study researcher McMahon. “If the mechanism (機(jī)制) similar to the one that we found in mice operates in humans, then it could not only have an effect on a number of behavioral disorders, but also have a more general effect on personality.”
小題1:How many groups of mice are there finally in all in the experiment?
A．Four.B．Five.C．Six. D．Seven.
小題2:What's the main idea of the text?
A．The biological clock regulates mood in humans.
B．People born in winter are at higher risk for physical health disorders.
C．Being born in winter has a negative effect on people's mental health.
D．The length of light will influence the behavior of the mice.
小題3:The underlined word “split”(Paragraph 3) can be replaced by ________.
A．endedB．tornC．hitD．divided
小題4:Who is the appropriate reader of the passage?
A．A job­hunter.B．A student in the university.
C．A newly­married couple.D．An experienced dentist.

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科目：高中英語(yǔ) 來(lái)源：不詳 題型：閱讀理解

Having one of those days or weeks when everything seems to annoy you? Even if you do nothing about it, your bad mood(心情) will probably go away after some time. But with a little effort, you can forget it much faster—often within a day or two.
Walk it off
Exercise is the most popular bad ­mood buster. A person who's in a bad mood has low energy and high tension. Taking a fast ten­-minute walk, or doing some quick exercises can do wonders towards changing the bad mood.
Tune it out
Listening to your favorite music for a while can also make tension go away quickly, because music starts connection with past positive experiences we've had.
Give yourself a paper talk
Stop and listen to what's on your mind. Bad moods are often started by too many negative thoughts. Write them all down on paper, the pessimistic(悲觀的) messages you've been giving yourself, and then give optimistic answers. (“I still don't have a job.” vs “I have two interviews next week.”)
Reduce your stress
Relaxation techniques are wonderful mood­lifters. These include deep breathing, stretching and visualizing(想像), all of which sound complicated(復(fù)雜的) but aren't. One easy way to visualize: close your eyes and picture a favorite place, such as the beach. Another simple way to distress is to make a to­do list. One reason for being in a bad mood is feeling you have no options. By taking control over certain areas,  you realize you're not helpless. You can make changes in your mood and life.
Avoid things that won't improve your mood
TV may not help much: you need to increase your energy level and stimulate(刺激) your mind—something that the TV show “Neighbors” won't do. And before you reach for that piece of cake and coffee, think about how mood and food are linked. Sugar and caffeine contribute to depressed moods. The better choice? Research shows that carbohydrates, such as potatoes and pasta(面食), produce calming effects in people who have a desire for them.
小題1:Which of the following may help us stop a bad mood?
A．Doing nothing about it
B．Exercising and enjoying music.
C．Writing down negative thoughts
D．Talking about it with neighbors.
小題2:Why is it suggested that you close your eyes and picture the beach?
A．It helps remove bad mood.
B．It brings us a new technique.
C．It is not complicated to do so.
D．It is an area to be easily controlled.
小題3:TV may not improve your mood because it ________.
A．shows what happens around youB．does not energize you
C．reminds you of eating and drinkingD．produces a calming effect
小題4:Which would be the best title for this passage?
A．Energy Level and StressB．How to Beat a Bad Mood
C．Bad Mood and Our LifeD．How to Control Your Feeling

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科目：高中英語(yǔ) 來(lái)源：不詳 題型：閱讀理解

The World Health Organization (WHO) planned to study the relationship between the eating habits of the people and the disease. Two doctors were chosen to make the study. They flew to Africa south of the Sahara and during the next two months visited ten countries. They found that serious diseases of poor eating, often mistaken for other diseases, existed in all parts of Africa. The diseases were similar and could therefore all be named kwashiorkor. The diseased children are usually from one to four years old. As the illness progresses, the child’s stomach becomes swollen by liquid collecting in the body. The skin changes color and may break out in open sores（疼痛）. The hair changes color and starts to fall out. The patient loses all interest in his surroundings and even in food, and becomes so weak that he wants to lie down all the time. Stomach liquids are no longer produced.
The doctors reasoned that kwashiorkor was found in the young children of this age in many parts of Africa because of lack of milk or meat. Their mothers, after stopping their breastfeeding, gave them foods full of starches（淀粉）instead of greatly needed proteins. They found that the addition of milk to the food of the children suffering from kwashiorkor saved many lives.
The unbelievable thing about kwashiorkor is that the very existence of the disease—which has been killing thousands of children for centuries—was not even recognized in Latin America as recently as ten years ago. The deaths of those children were mistakenly listed as due to other diseases. It was the WHO’s work in Africa that led to the discovery of the problem in Central America.
小題1:From the passage we learn that kwashiorkor is a disease caused by __________ .
A．poor living conditionsB．lack of proteins in food
C．breastfeedingD．lack of food
小題2: It is difficult to discover kwashiorkor because ____________________ .
A．it has no symptoms at all
B．it is hard to identify signs of it
C．it doesn’t last long enough for careful observation
D．it is hardly different from other diseases
小題3:What is mentioned as a simple but reasonable way of curing this disease?
A．Taking a special medicine.
B．Avoiding any food containing starch.
C．Having more meat or milk.
D．Taking medicine full of proteins.
小題4:What’s the best title for the article?
A．Milk and Meat Are Daily Necessities
B．Kwashiorkor and Improper Eating Habits
C．A New Form of Illness in Africa and Latin America
D．A Case of Eating Habits

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