It is very important to have healthy teeth. Good teeth help us to chew our food
题型：不详难度：来源：
It is very important to have healthy teeth. Good teeth help us to chew our food .They also help us to look nice.
How does a tooth go bad? The __51begins in a little crack in the enamel(珐琅) covering of the tooth. This happens after germs and bits of food have__52 there. Then the decay slowly spreads inside the tooth. In the end, poison goes into the blood, and we may feel quite ill.
How can we keep our teeth__53 ? First, we ought to visit our dentist twice a year. He can fill the small holes in our teeth before they destroy the teeth. He can__53 __54 our teeth to check that they are growing in the right way. __55 , many people wait until they have toothache before they see a dentist. Secondly, we should brush our teeth with a toothbrush and fluoride(氟化物) toothpaste at least__56 a day—once after breakfast and once before we go to bed. We can also use wooden toothpicks to__57between our teeth after a meal. Thirdly, we should eat food that is__58 to our teeth and our body: milk, cheese, fish, brown bread, potatoes, red rice, raw vegetables and fresh fruit. Chocolate, sweets, biscuits and cakes are bad, especially__59 we eat them between meals. They are harmful because they__60 our teeth and cause decay.
51. A. destruction B. decay C. fault D. hurt
52. A. stored B. collected C. laid D. piled
53. A. healthy B. complete C. effective D. painless
54. A. observe B. skim C. watch D. examine
55. A. Unexpectedly B. Certainly small C.Unfortunately D. Generally
56. A. once B. twice C. three times D. four times
57. A. drill B. dig C. clean D. explore
58. A. delicious B. valuable C. beneficial D. meaningful
59. A. what B. how C. whether D. when
60. A. stick to B. attach to C. fix on D. keep to |
答案
51---60 BBADC BCCDA |
解析
51.decay的意思是“腐烂”。(牙齿)的腐烂开始于覆盖在牙齿上的珐琅层上的小裂纹。destruction的意思是“破坏”；fault的意思是“缺点”；hurt的意思是“受伤”。答案为B。
52.collected在此为不及物动词，意思是“聚集；堆积”。细菌和食物聚集在牙缝后，就会引起牙齿珐琅层的破裂。store作不及物动词的意思是“贮藏”；laid是及物动词，意思是“放”；pile常和up连用，意思是“堆积”。答案为B。
53.healthy“健康的”，本篇短文讨论的是保持牙齿健康的问题。B为“完全的”；C为“有效的”；D为“无痛苦的”，均不合文意。答案为A。
54.“examine”表示医生检查身体(某一神经)，看牙医的目的是让他检查我们的牙齿是否生长正常。observe的意思是“观察”；skim的意思是“掠过”；watch的意思是“注视”。答案为D。
55. 每年至少看两次牙医可以保证我们牙齿的健康。他们可以为我们补牙，检查我们的牙龄是否生长正常。但是，不幸的是人们只在牙痛时才去看牙医。而A表示“出乎意料地”；B表示“肯定小”；D表示“一般地”，均不合题意。答案为C。
56.从后句once after breakfast and once before we go to bed可知。答案为B。
57.clean为“使……干净”。饭后使用牙签的目的是清除牙齿之间的食物。drill的意思是“钻”；dig的意思是“挖”；explore的意思是“探险”。答案为C。
58.beneficial的意思是“有益的”。为了保持我们牙齿的健康，我们必须吃有益于牙齿健康的食物。delicious的意思是“好吃的；美味的”；valuable的意思是“有价值的”；meaningful的意思是“意味深长的”。答案为C。
59.巧克力、糖果、饼干和蛋糕对牙齿有害，特别是我们在两顿饭之间吃这些东西。注意这四个选项的语法功能：what, how和whether只能引导名词性从句；而when既可以引导名词性从句，也可以引导时间状语从句。从句子的结构和意思都可判断出是时间状语从句，而不会是名词性从句。答案为D。
60.stick to的意思是“粘住”。巧克力、糖果、饼干和蛋糕会粘在我们的牙齿上，造成牙齿破裂，所以它们是有害的。attach to的意思是“附属于”；fix on的意思是“固定在”；keep一般不和介词to连用。答案为A。 |
举一反三
Many people find that regular physical activity gives them an unexpected benefit.They sleep better and wake up feeling more__61 ,in part due to increased
amounts of deep sleep. Deep sleep may play a role in the body restoring(恢)itself__62,as opposed to REM(rapid eye movement) or dreaming sleep. Researchers have found that physical exercise, especially__63 in the afternoon orearly evening,produces more__64 early in the night.
__65can also help you get a better night"s sleep in a number of indirect ways. The relaxation and tiredness __66by exercise can improve sleep.
Exercise encourages weight loss and also may __67 depression. Exercising later in the day can also help delay the __68 drop in your body"s temperature. The __69 of exercise are especially important for older people, __70 exercise has been shown to increase the amount of sleep senior adults get in a night and reduce the time it takes to fall asleep. But be sure you finish exercising at least 4 hours before bedtime—working out later than that could leave you too excited to fall asleep easily.
61.A. conscious B. peaceful C. effective D. refreshed
62.A. physically B. mentally C. emotionally D. regularly
63.A. made B. done C. functioned D. conducted
64.A. night"s sleep B. dreaming sleep C. deep sleep D. REM
65.A. Exercise B. Dreams C. Researchers D. Doctors
66.A. recovered B. strengthened C. caused D. reduced
67.A. increase B. relieve C. release D. arouse
68.A. nighttime B. daytime C. dinnertime D. lifetime
69.A. disadvantages B. benefits C. ways D. places
70.A. yet B. if C. when D. Since |
There are thousands of products of all colors and shapes in a supermarket, making you believe that they are worth a try. How? Packaging （包装）is the silent but persuading salesman.
There on the shelves, each bottle, can, box, and jar has been carefully designed and measured to speak to the inner self of the consumer（消费者）, so that is buying not only a product but also his belief in life. Scientists have studied consumer behavior recently and found that the look of the package has a great effect on the “quality” of the product and on how well it sells, because “Consumers generally cannot tell between a product and its package. Many products are packages and many packages are products,” as Louis Cheskin, the first social scientist studying consumers’ feeling for packaging, noticed.
Colors are one of the best tools in packaging. Studies of eye movement have shown that colors draw human attention quickly. Take V8 for example. For many years, the bright red color of tomatoes and carrots on the thin bottle makes you feel that it is very good for your body. And the word “green” today can keep food prices going up.
Shapes are another attraction. Circles often suggest happiness and peacefulness, because these shapes are pleasing to both the eye and the heart. That’s why the round yellow M signs of McDonald’s are inviting to both young and old.
This new consumer response（反应）to the colors and shapes of packages reminds producers and sellers that people buy to satisfy both body and soul.
60．According to the passage, ______ seems to be able to persuade a consumer to buy the product.
A．the pleasing color of the package B．the special taste of the product
C．the strange shape of the package D．the belief in the product
61．If a package or a product is round in shape, it can ________.
A．bring excitement to the consumers B．attract the consumers’ attention
C．catch the eye movement of the consumers D．produce a happy and peaceful feeling
62． “And the word ‘green’ today can keep food prices going up.” This sentence suggests that consumers today are ________.
A．starting to notice the importance of new food
B．enjoying the beauty of nature more than before
C．beginning to like green vegetables
D．paying more attention to their healthy
63．It can be inferred from the passage that V8 is a kind of ________.
A．vegetable dish B．healthy juice C．iced drink D．red vegetable |
LONDON（Reuters）-Organic fruit, delivered right to the doorstep. That is what Gabriel Gold prefers, and he is willing to pay for it. If this is not possible, the 26-year-old computer technician will spend the extra money at the supermarket to buy organic food.
"Organic produce is always better," Gold said. "The food is free of pesticides（农药）, and you are generally supporting family farms instead of large farms. And more often than not it is locally（本地）grown and seasonal, so it is more tasty. "Gold is one of a growing number of shoppers buying into the organic trend, and supermarkets across Britain are counting on more like him as they grow their organic food business. But how many shoppers really know what they are getting, and why are they willing to pay a higher price for organic produce? Market research shows that Gold and others who buy organic food can generally give clear reasons for their preferences-but their knowledge of organic food is far from complete. For example, small amounts of pesticides can be used on organic products. And about three quarters of organic food in Britain is not local but imported（进口）to meet growing demand. "The demand for organic food is increasing by about one third every year, so it is a very fast-growing market," said Sue Flock, a specialist in this line of business.
60. More and more people in Britain are buying organic food because ____.
A. they are getting richer
B. they can get the food anywhere
C. they consider the food free of pollution
D. they like home-grown fruit
61.Which of the following statements is true to the facts about most organic produce sold in Britain？
A. It grows indoors all year round.
B. It is produced outside Britain.
C. It is grown on family farms.
D. It is produced on large farms.
62.What is the meaning of "the organic trend" as the words are used in the text？
A. growing interest in organic food
B. better quality of organic food
C. rising market for organic food
D. higher prices of organic food
63.What is the best title for this news story？
A. Organic food-healthy, or just for the wealthy？
B. The making of organic food in Britain
C. Organic food-to import or not？
D. Good qualities of organic food |
Northern Europeans spend a lot of time in their cold and cloudy winters planning their summer holidays. They are proud of their healthy color when they return home after the holiday. But they also know that a certain amount of sunshine is good for their bodies and general health.
In ancient Greece people knew about the healing(治疗) powers of the sun, but this knowledge was lost. At the end of the nineteenth century a Danish doctor, Niels Finsen, began to study the effect of sunlight on certain diseases, especially diseases of the skin. He was interested not only in natural sunlight but also in artificially (人造地) produced rays. Sunlight began to play a more important part in curing sick people.
A Swiss doctor, Auguste Rollier, made full use of the sun in his hospital at Lysine. Lysine is a small village high up in the Alps. The position is important: the rays of the sun with the greatest healing power are the infra-red (红外线的) and ultra-violet (紫外线的) rays; but ultra-violet rays are too easily lost in fog and the polluted air near industrial towns. Dr. Roller found that sunlight, fresh air and good food cure a great many diseases. He was particularly successful in curing certain forms of tuberculosis with his “sun-cure”.
There were a large number of children in Dr. Roller’s hospital. He decided to start a school where sick children could be cured and at the same time continue to learn. It was not long before his school was full.
In winter, wearing only shorts, socks and boots, the children put on their skis after breakfast and left the hospital. They carried small desks and chairs as well as their school books. Their teacher led them over the snow until they reached a slope which faced the sun and was free from cold winds. There they set out their desks and chairs, and school began.
Although they wore hardly any clothes, Roller’s pupils were very seldom cold. That was because their bodies were full of energy which they got from the sun. But the doctor knew that sunshine can also be dangerous. If, for example, tuberculosis is attacking the lungs, unwise sunbathing may do great harm.
Today there is not just one school in the sun. There are several in Switzerland, and since Switzerland is not the only country which has the right conditions, there are similar schools in other places.
1. According to the passage, when did sunlight begin to play a more important part in the treatment of disease?
A. From ancient times. B. At the end of the nineteenth century.
C. Not until this century. D. Only very recently.
2. Why are a Danish doctor and a Swiss doctor mentioned in the second and third paragraphs?
A. Because they both made use of sunlight to treat illness.
B. Because they were the first people who used sunlight for treatment.
C. Because they were both famous European doctors.
D. Because they used sunlight in very different ways.
3. Dr Roller set up a “sun-cure” school probably for the reason that _______.
A. most children could stay in his hospital
B. children could study while being treated
C. the school was expected to be full of pupils
D. the school was high up in the mountains
4. What can be inferred from the last paragraph of the passage?
A. “Sun-cure” schools are becoming popular everywhere.
B. Switzerland is the only country where “sun-cure” schools are popular.
C. Proper conditions are necessary for the running of a “sun-cure” school.
D. “Sun-cure” schools are found in countries where there is a lot of sunshine. |
Most of us think that when we step under a shower we’re getting clean．We are, but we’re also giving a home to lots of tiny little creatures we didn’t even know about．
A showerhead carries thousands of bacteria (细菌) called Mycobacterium．These can cause problems like coughs and tiredness, and a general feeling of poorliness (身体不舒服)．When you turn on the water, the bacteria go from the showerhead onto and into your body．
This is a finding of Norman R．Pace and his team at the University of Colorado, in the US．The scientists investigated bacteria in all kinds of human environment, including showers．
Pace"s team looked at 45 showerheads in nine American cities．They discovered that 30 percent of them had large amounts of flying Mycobacterium．
But Pace said that they pose few threats to the health．Only those with a frail (脆弱的) immune (免疫的) system might need to worry．
He told the New York Times that the bactertia are not as unpleasant as might be thought．He said that having a shower is no more dangerous than anything else we do in the morning．
But for those who feel sick about the idea of all those microorganisms (微生物), he had some advice．
Let the water run for 30 seconds before getting into the shower．Why? The number of bacteria is smaller than when the water is just turned on．If that seems like a waste of water, he added that you could also change your showerhead every few months．
But Pace had good news too．He has also been testing the air in US subways．Apart from iron particles (粒子), which are ground off the track by the wheels of trains, subway air is fresh．The reason is that a train’s movement pumps fresh outdoor air into the tunnels(隧道)．
Pace explained that he wanted to understand the natural microbial(微生物的) environments of public places．This kind of knowledge might help detect the microbes to be used in a bioterrorist (生物恐怖分子) attack．
49．According to the finding of Norman R．Pace, after taking a shower, we might ______．
A．get much dirtier B．be covered by bacteria
C．get a frail immune system D．catch a cough or feel tired
50．Pace’s research into showers shows that ______．
A．there is no reason to fear microorganism
B．shower water contains much less bacteria after being left to run for 30 second
C．having a shower in the morning is more dangerous than at other time
D．of 45 showerheads surveyed in nine cities, 30 carried large amounts of Mycobacterium
51．According to the research of Pace’s team, which of the following contributes to fresh air in US subways?
A．Train wheels． B．Iron particles．
C．The movement of the trains． D．Air conditioners on the trains．
52．The word “detect” in the last paragraph probably means “______”．
A．to discover B．to protect C．to make D．to prevent |
最新试题
热门考点