填空题If you ask me: What got you interested in science? I would say. When I don"t 1 how things work, I"m 2 . Then what got me into 3 biology, 4 ? I"d like to understand how biology works, how living 5 work. How would you 6 synthetic biology? What does it 7 ? My interest is to 8 and reliably, quickly, easily, cheaply put 9 the bits and 10 of biology to make new and useful things. The 11 of synthetic biology is to make routine the 12 , the programming of living 13 . And the last seventy years of biology has been a success at taking things 14 and reading out the 15 , but we"ve never put things 16 together. Seventy years ago, the 17 came into biology and really shook things up. What"s happening now is that the engineers are coming into biology and going to 18 things up in a 19 , different way. The last thing to say is that we"ve developed some technologies that make it easy. DNA synthesis is getting better, which means that the cost and time to 20 one of your designs isn"t six years, but six weeks, perhaps.

填空题Today's lecture is about the mass (1) of the world's population. There are two major (2) why people are moving to cities. The first reason is (3) . People are moving to the cities because that's where they can find (4) and earn money. The second reason for the move to cities has to do with (5) of life issues: comfort and (6) . Cities often offer better (7) . And then for many, city life is just more (8) . An interesting consequence of urbanization is that the average (9) of people in the countryside is increasing, while that of the cities is (10) . Three key (11) can be identified in our cities. First of all, they're getting bigger. Most cities are bigger now than ever before. Cities are also changing shape. They're getting (12) , because land is getting more and more expensive. (13) have become a symbol of modern cities. Cities are also changing shape in other ways. The (14) Model and the (15) Nuclei Model are probably more typical of the cities we know today. They show the urban (16) that's occurring in contemporary cities. The third change is that our cities are breaking up into (17) communities, often by (18) group or (19) level. This often means that people stay within their community and do not come into contact with others from different (20) .

填空题Scientists are looking at ways to 1 the global temperature by removing greenhouse gases from the air. Carbon dioxide has a 2 effect on the Earth"s temperature. Since the industrial revolution, humans have been burning 3 amounts of fossil fuels, releasing large amounts of carbon dioxide. The gas is changing the climate, warming the 4 for plants and animals and raising sea 5 . Even if we stopped burning fossil fuels today, there is enough carbon dioxide in the atmosphere. Hence, we have the idea of finding ways of 6 carbon dioxide. In recent years there have been 7 to remove the carbon dioxide from its 8 in power plants. 9 have been fitted to the 10 , so the carbon dioxide produced during fuel burning can be removed from the 11 emissions. The carbon dioxide can be cooled and pumped for 12 in underground rock chambers, which is a useful way of preventing carbon dioxide from entering the 13 . But what about the 14 that is already out there? The problem with removing carbon dioxide from the atmosphere is that it"s 15 at such a 16 concentration. Removing the gas takes lots of energy. Though it is expensive, it"s 17 . Extracting the 18 of carbon dioxide in the atmosphere would require enormous volumes of 19 to be processed. Therefore, most scientists have 20 at the idea.

填空题Today I"m going to look at the sense of hearing. In general, we tend to assume that we all hear the same thing. But, in fact, this seems to be a 1 because men and women are increasingly claiming that there are 2 in what they hear. So are they right? Do men and women have different 3 experience? The most fascinating thing about the 4 of the ear is that a part that measures three millimeters in a child often will also measure three millimeters in a very tall 5 . But can men and women"s hearing vary despite this 6 ? An Australian 7 Alan Treece is adamant that they can. He believes that men are better at discerning the 8 of a sound than women. Treece is also convinced that women are 9 programmed to hear crying babies. He puts it down to the fact that women hear better than men in terms of distinguishing 10 sounds. He links this to the fact that women as the child bearers need the ability to hear if there is any 11 coming from the child. But it does seem that when the role of carer is 12 , men are mysteriously equally good at hearing their 13 . So what"s the scientific truth behind such ideas? An ongoing study shows that women"s hearing is slightly better than men"s. And this difference is observable from the moment of 14 . One mysterious difference between the sexes was 15 recently when a number of women in 16 started hearing strange sounds, which their husbands simply couldn"t. The local council has 17 to work out what the sounds can be. What is really intriguing is that all the 18 sent in to the Council offices so far have been from 19 . No man seems to be able to hear it. This might give us a 20 insight into the mysterious world of sound.

填空题You might think that hamburgers were invented in the United States, but that is not totally true. These 1 , or patties, actually came from Germany in the middle of the nineteenth century. They were brought to the United States by 2 who came from the city of Hamburg. That is why 3 was "hamburger steak" However, people in other place 4 that they invented the hamburger. Perhaps we"ll never have a 5 . There"s no question that the hamburger was a 6 . Why? Perhaps because at that time, industry was growing and a kind of food was need 7 for workers. The hamburger became even more popular 8 when the first chain of fast food restaurants was started. This chain was called "White Castle". It served tiny hamburgers that were sold for only 9 . Then, in the 1930s there came the 10 where customers were served in their cars by waiters in uniform. And the hamburger was one of the most 11 . By now, the hamburger was ready to 12 the world. And this happened with McDonald"s, which was actually a 13 at first. But by the early 1950s the hot dog was replaced by the hamburger. McDonald"s and other fast food restaurants 14 around the world throughout the rest of the twentieth century. McDonald"s alone has 15 for everyone person in the world. The importance of the hamburger to 16 remains significant. About 17 of all sandwiches that are eaten are hamburgers. According to some sources, 18 of current workers in the United States had their first job at McDonald"s. But the face of the hamburger is changing 19 . Nowadays it is possible to buy a chicken burger, a turkey burger, 20 , or veggie burger.

填空题Good morning. The discussion topic for today"s seminar is "Homelessness in America." In the United States, homelessness has 1 during the last decade. Estimates of the number of Americans currently without 2 vary wildly. Advocacy groups like the National Coalition for the Homeless say that 3 Americans live on the streets or in emergency and temporary shelters. The US Department concerned puts the figure at 4 . Yet both bureaucrats and advocates agree on one point, that is, the face of homelessness 5 in the past 10 years, as more and more low-income housing is mowed down 6 . Some 20 years ago, the typical "street person" was a white male who suffered from a mental illness or 7 . Today"s homeless, however, are a more eclectic group. 8 of the homeless today are Black, mostly 9 . More than half of them have never been homeless before. In many cases, they have been evicted from their homes, or the 10 in which they lived was demolished or burned down. About 60 percent of all homeless people live on 11 with an average monthly income of 450 dollars. About 20 percent are mentally ill. All sorts of people have been pushed out of 12 because of the critical shortage of affordable places to live. As a result, homelessness has climbed to the top of the 13 of social concerns. But there is a great gap between concern and active involvement 14 this growing problem. For many people, the inaction is 15 , not indifference. The fact is that there are many ways in which individuals can 16 . Yet for those people 17 , one of the first steps is to get to know the homeless and understand how they 18 . Many advocates believe that it is important for 19 to get to know and reach out to the homeless and 20 .

填空题 If you find you spend more than you make, there are only two things to do: decrease your spending or{{U}} (1) {{/U}}. It's often easiest to decrease expenditures, because your expenses tend to be more{{U}} (2) {{/U}}. There are as many ways to{{U}} (3) {{/U}}as there are people looking to save it. For example, you may pool your resources with friends, or{{U}} (4) {{/U}}only during sales, or even live more simply. But{{U}} (5) {{/U}}that saving money should not necessarily be an end in itself. Don't{{U}} (6) {{/U}}of ways to save a dime, and don't get upset about situations where{{U}} (7) {{/U}}to spend money. The goal is to bring your budget into balance, not to become a tightwad who keeps{{U}} (8) {{/U}}of every penny and feels that spending money is a{{U}} (9) {{/U}}. It is important to remember that budgets may be{{U}} (10) {{/U}}not only by decreasing expenditures, but also by increasing income.{{U}} (11) {{/U}}to increase income is to get a{{U}} (12) {{/U}}if you don't already have one. Many students work during college. Although working adds to the{{U}} (13) {{/U}}you will face, it does not mean that your grades will necessarily suffer. In fact, many students who work{{U}} (14) {{/U}}than those who don't work, because those with jobs need to be{{U}} (15) {{/U}}. Considering part-time work is often a better{{U}} (16) {{/U}}for dealing with budget shortfalls, than taking out a loan. Because student loans are{{U}} (17) {{/U}}, it's easy to use them as a crutch. Loans can be of help{{U}} (18) {{/U}}or if you couldn't afford to attend a college without them. If you do{{U}} (19) {{/U}}, remind yourself: one day soon you'll have to{{U}} (20) {{/U}}with interest.

填空题For years we have been talking about addiction to the Internet, and then to the mobile phone. A recent survey in UK found that 1 would rather live without their own children for a week than give up their mobile phone, while 2 admitted they were addicted to their handsets. Now we are putting together a support group for those who 3 . By speaking of the group, I mean, what we offer as some of the treatments are 4 for those people. The group itself becomes a therapeutic tool, because people are getting out of their rooms where they 5 or the mobile phone for many hours and even days, surfing the Internet or the WeChat. People are 6 and are dealing with other people face-to-face. They are getting 7 . They realize that it is not just them, that there are other people who are engaged in the same behavior and 8 , and also they can help each other strategize about what is the best way for them to 9 , to figure out other things to do. And also we 10 . it is important to figure out what is going on in the person"s life that is contributing to 11 . Why is the person spending so much time on 12 ? Are they avoiding something? Or are they trying to 13 ? As far as how many people are actually addicted to the Internet or the Wechat, there was one study which said 14 . I would say at least 5 percent of people who are 15 . The thing is, though, it is very easy to slip into and you don"t realize it, 16 . For instance, we have 17 where people can just go in, they may be doing 18 on the computer, and then they just 19 and see what is going on, and then before they know it, 20 .

填空题{{B}}Part A Note-taking And Gap-filling{{/B}} Directions: In this part of the test you will hear a short talk. You will hear the talk ONLY ONCE. While listening to the talk, you may take notes on the important points so that you can have enough information to complete a gap-filling task on a separate ANSWER BOOKLET. You will not get your ANSWER BOOKLET until after you have listened to the talk. What separates the average person from Edison, Picasso or even Shakespeare isn't {{U}}(1) {{/U}} capacity. It's the ability to use that capacity by {{U}}(2) {{/U}} creative impulses and then acting upon them. Most of us seldom achieve our creative {{U}}(3) {{/U}} but the reservoir of ideas hiding within every one of us can be {{U}}(4) {{/U}} The following {{U}}(5) {{/U}} suggest concrete ways of increasing creativity. {{U}} (6) {{/U}} the fleeting. A good idea is like a rabbit. It runs by so fast, sometimes you see only its ears or tail. Creative people are always ready to {{U}}(7) {{/U}}—possibly the only difference between us and them. {{U}} (8) {{/U}}. Everyone experiences this strange state and can take {{U}}(9) {{/U}} of it. Often, the "three bs"—bed, bath and bus—are {{U}}(10) {{/U}}. Anywhere you can he with your thoughts undisturbed, you'll find ideas {{U}}(11) {{/U}} freely. Seek {{U}}(12) {{/U}}. Try inviting friends and business associates from different {{U}}(13) {{/U}} of your life to a party. {{U}}(14) {{/U}} people of different ages and social status together may help you think in new ways. {{U}} (15) {{/U}} your world. This principle works elsewhere as well. To {{U}}(16) {{/U}} your creativity, learn something new. If you' re a banker, take up tap dancing; if you're a nurse, try a course in vitamin therapy. Read a book on a new {{U}}(17) {{/U}} Change your daily newspaper. The new will {{U}}(18) {{/U}} with the old in novel and potentially {{U}}(19) {{/U}} ways. Becoming more creative means paying {{U}}(20) {{/U}} to that endless flow of ideas you produce, and learning to capture and act upon the new that's within you.

填空题Everyone experiences 1 on some level every day. Stress, broadly defined, is our 2 to events we perceive as 3 or challenging. Of course, not everyone perceives the same events or circumstances as 4 ; we don"t always react the same way to the same stressors. In fact, something that is extremely stressful for one person may be exciting and 5 for another. In general, stressful events can be classified into three main 6 : cataclysmic events, personal stressors, and background stressors. Cataclysmic events are 7 events that cause stress suddenly and immediately. Their examples are earthquakes, fires, or other 8 . Personal stressors are major life events that create stress. They can include the death of a loved one, a job loss, a divorce, a financial 9 , or a 10 move. Finally, background stressors, which we can also think of as day-to-day 11 , or minor 12 . Examples of background stressors are waiting in a long line, getting 13 in a traffic jam, being 14 to noise, experiencing a delay, or dealing with broken equipment. Repeated exposure to stressors has both 15 and biological 16 . When we are exposed to stressors, our adrenal glands secrete certain 17 , and our heart rate and blood pressure rise. And when the body is preparing for emergencies, body 18 such as the heart and blood 19 can begin to 20 .

填空题The biggest mistake in life is to think that you work for someone else. True, you may have a boss and you may 1 from a company but, ultimately, you are master of 2 . You decide what potential you reach in your career and what you will 3 in your life. Regardless of your circumstances, you can 4 . This is particularly true at your current workplace. Every day you have 5 , to stand out, and to be exceptional. You can make a suggestion to improve a product or service or to 6 . You can identify an opportunity to save money or 7 . You can help a coworker do his or her job better or learn a new skill that you can use for the rest of your life. It all 8 , that is, taking action to get some thing done at work without waiting for your boss to tell you what to do or when and how to do it. To be able to take initiative in your job you first need to see how you and your position 9 of things at work. In most jobs this role is not 10 , so you need to investigate how you fit into 11 . Ask yourself: Why was my job created? Most jobs are created to help with 12 of the organization. If you can understand the initial needs for your position, you will be better able to 13 and go beyond them. How does my job relate to others in the organization? Whom do you 14 ? Questions like these help you to see the contribution you make in your position and 15 . What opportunities to contribute to the organization exist in my job? Every job 16 for the employee who looks for them. Knowing how you contribute to your organization can 17 even more to help. How is my job linked to the organization"s objectives? By defining your position 18 the goals and objectives of the organizations, you can 19 . Once you see your role in the big picture, you are better able to take the initiative 20 .

填空题Extinction is{{U}} (1) {{/U}}speed. The world's rain forests are being{{U}} (2) {{/U}}at an alarming rate. Oceans are being{{U}} (3) {{/U}}of fish. Pastures are turned into{{U}} (4) {{/U}}jungles. To support biodiversity, we need to eat{{U}} (5) {{/U}}. What we eat{{U}} (6) {{/U}}our relationship with nature. Fast food is an ecological{{U}} (7) {{/U}}. Fast food chains{{U}} (8) {{/U}}rain forests for cattle grazing. The land beneath rain forests has to be{{U}} (9) {{/U}}within a few years. Fast food chains serve the{{U}} (10) {{/U}}food all over the world. Local farmers abandon their{{U}} (11) {{/U}}crops and try to grow the{{U}} (12) {{/U}}needed for the very limited international{{U}} (13) {{/U}}. In supermarkets, the diversity is only in the{{U}} (14) {{/U}}, while the{{U}} (15) {{/U}}is always the same. Food choices are being dangerously{{U}} (16) {{/U}}. Multinational corporations have already succeeded in{{U}} (17) {{/U}}many plants and animals. To preserve biodiversity, we can choose to eat in{{U}} (18) {{/U}}restaurants rather than fast food chains, buy local{{U}} (19) {{/U}}produce and avoid buying{{U}} (20) {{/U}}fruits and vegetables.

填空题What's in a surname? You may ask

填空题 Can we save the world's {{U}} {{U}} 1 {{/U}} {{/U}}languages? The Hadza community lives in Tanzania. Their language—Hadza—is unique. However the language may not be {{U}} {{U}} 2 {{/U}} {{/U}}for long. There are now fewer than 1,000 Hadza {{U}} {{U}} 3 {{/U}} {{/U}}. The number will continue to {{U}} {{U}} 4 {{/U}} {{/U}}and their sing-song tongue, {{U}} {{U}} 5 {{/U}} {{/U}}with clicks and glottal stops, is no longer being learned by all Hadza children. The language is in danger of being {{U}} {{U}} 6 {{/U}} {{/U}}. The Hadza are not alone in facing the loss of their {{U}} {{U}} 7 {{/U}} {{/U}}tongue. Every {{U}} {{U}} 8 {{/U}} {{/U}}days a language dies. Over half of the approximately 7,000 languages spoken on the planet may {{U}} {{U}} 9 {{/U}} {{/U}}by the end of the 20th century. Eighty percent of the {{U}} {{U}} 10 {{/U}} {{/U}}languages have no {{U}} {{U}} 11 {{/U}} {{/U}}form. {{U}} {{U}} 12 {{/U}} {{/U}}the last speaker dies, so does the language. But eighty percent of the world's population now speak just {{U}} {{U}} 13 {{/U}} {{/U}}of its languages. So, will the languages on the {{U}} {{U}} 14 {{/U}} {{/U}}be reduced to a {{U}} {{U}} 15 {{/U}} {{/U}}of tongues? Not if some people have their way, who are fighting back to {{U}} {{U}} 16 {{/U}} {{/U}}rarer tongues successfully. Perhaps the most successful example is {{U}} {{U}} 17 {{/U}} {{/U}}, which was dead two centuries ago but is a living language now. Other languages have also been brought back from the brink of {{U}} {{U}} 18 {{/U}} {{/U}}through the sheer will and determination of their communities. Language preservation works best when the language, culture and {{U}} {{U}} 19 {{/U}} {{/U}}of minority-speaker communities are {{U}} {{U}} 20 {{/U}} {{/U}}by national governments.

填空题When Americans think about hunger

填空题 The human brain is only about three pounds in {{U}} {{U}} 1 {{/U}} {{/U}}. The brain is {{U}} {{U}} 2 {{/U}} {{/U}}white in colour and is {{U}} {{U}} 3 {{/U}} {{/U}}. Each working part of the brain is a {{U}} {{U}} 4 {{/U}} {{/U}}cell known as a neurone. The neurones both conduct electrical {{U}} {{U}} 5 {{/U}} {{/U}}and {{U}} {{U}} 6 {{/U}} {{/U}}the power to send {{U}} {{U}} 7 {{/U}} {{/U}}through the nervous system. The brain can be divided into {{U}} {{U}} 8 {{/U}} {{/U}}main parts—the hindbrain, the midbrain and the cerebrum. Each area of the brain has its own particular function. The hindbrain consists of the brain stem and the cerebellum. The brain stem connects the brain with the spinal {{U}} {{U}} 9 {{/U}} {{/U}}. The brain stem also controls the main {{U}} {{U}} 10 {{/U}} {{/U}}functions of the brain, such as heartbeat, breathing and {{U}} {{U}} 11 {{/U}} {{/U}}. The cerebellum controls balance and {{U}} {{U}} 12 {{/U}} {{/U}}. The midbrain {{U}} {{U}} 13 {{/U}} {{/U}}the hindbrain to the cerebrum. The cerebrum is the largest and most developed part of the brain and consists of two hemispheres. The left hemisphere controls the {{U}} {{U}} 14 {{/U}} {{/U}}side and the right hemisphere controls the left side of the body. It seems that the {{U}} {{U}} 15 {{/U}} {{/U}}brain has a greater responsibility for such things as words, logic, numbers, {{U}} {{U}} 16 {{/U}} {{/U}}and analysis. The right brain deals more with {{U}} {{U}} 17 {{/U}} {{/U}}, spatial awareness, imagination, daydreaming and {{U}} {{U}} 18 {{/U}} {{/U}}. Psychologist Tony Buzan argues that people who are particularly gifted actually use both sides of their brain and that we need to {{U}} {{U}} 19 {{/U}} {{/U}}both sides of our brain in order to achieve our full {{U}} {{U}} 20 {{/U}} {{/U}}.

填空题{{B}}A: Spot Dictation{{/B}}{{B}}Directions:{{/B}} In this part of the test, you will hear a passage and read the same passage with blanks in it. Fill in each of the blanks with the word or words you have heard on the tape. Write your answer in the corresponding space in your {{B}}ANSWER BOOKLET.{{/B}} Remember you will hear the passage{{B}} ONLY ONCE.{{/B}} In size, Canada is the second largest country on earth. In terms of{{U}} (1) {{/U}}, it is a member of Big Seven, the world's leading industrial nations,{{U}} (2) {{/U}}the United States, France, the United Kingdom,{{U}} (3) {{/U}}Canada plays an active role{{U}} (4) {{/U}}, often taking part in peacekeeping and humanitarian missions and spearheading{{U}} (5) {{/U}}. Its scenery of mountains, oceans, forests and prairies is{{U}} (6) {{/U}}. It has a lively and rich culture, with many world famous actors, pop stars and writers. In annual "quality of life", Canada regularly is rated as having{{U}} (7) {{/U}}of living in the world because of its health care, education,{{U}} (8) {{/U}}, social welfare, and so on. {{U}} (9) {{/U}}its physical size, economic power and international prestige, Canada's population is very small. The current population is{{U}} (10) {{/U}}. This paradox of having a small number of people in a very large, resource-rich area gives rise to some of{{U}} (11) {{/U}}people have about Canada. Most people do not know very much about Canada. Mention the country and usually{{U}} (12) {{/U}}will spring to mind. On the one hand, you might picture{{U}} (13) {{/U}}, frozen country where people live in igloos, eat fish, hunt bears and{{U}} (14) {{/U}}snow and cold. On the other, you might think Canada is a country that is "just like America." Even Americans{{U}} (15) {{/U}}Canada as the 51st state, a part of America that through some quirk of history is not one of the United States. It is easy to understand how such{{U}} (16) {{/U}}of Canada have become engrained. It is true that most of Canada lies very far north. Large areas of the country are wild, virtually unpopulated{{U}} (17) {{/U}}, full of dangerous animals and freezing temperatures. But most Canadians live in the south of the country: about{{U}} (18) {{/U}}of the population is estimated to live within{{U}} (19) {{/U}}of the Canadian-American border, in a climate that is much{{U}} (20) {{/U}}.

填空题Alcoholism and 1 addiction has already spread at alarming rate in the 21st Century. One of the biggest 2 about it is that only 3 people and ethnic minorities are more likely to get addicted. But the truth is that addiction is 4 to 5 , color and socio-economic background. People take drugs and alcohol because of the 6 or relaxing effects they have on the body. But as the person develops a habit, the 7 of the brain starts to change and adapt, 8 more and more of the drug as it resists the discomfort of 9 . The brain controls behavior by 10 actions that will ensure survival of the species. But the problem lies in the fact that some chemicals, like caffeine, alcohol and 11 can 12 brain reward systems directly, 13 the sensory receptors mediating natural rewards. But other more 14 drugs, such as heroine and cocaine, can produce a far more 15 effect, so the addiction would be more 16 . Addictions are lifelong 17 that are very hard to get rid of. Even some of the most skilled and 18 people might become addicts even though they are fully 19 of their harmful nature. The biggest killer is the person"s 20 of his or her condition of getting slowly addicted.

填空题 British people are far more sophisticated about beverages than they were 50 years ago. Witness the Starbucks revolution and you'll know where{{U}} (1) {{/U}}goes. However, spurred on by recent studies suggesting that it can cut the risk of{{U}} (2) {{/U}}and retard the aging process, tea is enjoying a{{U}} (3) {{/U}}. Although tea is available in more places than ever, it remains to be{{U}} (4) {{/U}}of a typical British family. If you are invited to an English home,{{U}} (5) {{/U}}in the morning you get a cup of tea. It is either brought in by a heartily{{U}} (6) {{/U}}or an almost malevolently silent maid. When you are{{U}} (7) {{/U}}in your sweetest morning sleep you must not say: "Go away, you{{U}} (8) {{/U}}." On the contrary, you have to declare with your best five o'clock smile. "Thank you very much. I{{U}} (9) {{/U}}a cup of tea, especially in the morning." If they leave you alone with the liquid you may pour it{{U}} (10) {{/U}}! Then you have{{U}} (11) {{/U}}; then you have tea at 11 o'clock in the morning;{{U}} (12) {{/U}}; then you have tea for tea; then after supper; and again at eleven o'clock{{U}} (13) {{/U}}. You must not refuse any additional cups of tea under the{{U}} (14) {{/U}}if it is hot; if it is cold; if you are{{U}} (15) {{/U}}; if you are nervous; if you are watching TV;{{U}} (16) {{/U}}; if you have just returned home; if you feel like it; if you do not feel like it; if you have had no tea{{U}} (17) {{/U}}; if you have just had a cup. You definitely must not{{U}} (18) {{/U}}. I sleep at five o'clock in the morning; I have coffee for breakfast; I drink innumerable{{U}} (19) {{/U}}during the day; I have the{{U}} (20) {{/U}}even at tea-time!

填空题Music can be divided into several categories, or groups. Some of them are. classical music, traditional music, rock music, and jazz music. The first group is classical music, which refers to 1 music that originated in Europe a few 2 years ago. Beethoven and Bach were two famous 3 of classical music. Classical music is usually played by a variety of 4 instruments, such as the violin and the cello, and by a variety of 5 instruments such as the flute and the saxophone. The second type is traditional music. Traditional music comes from a particular 6 . For example, "blues" music is one kind of 7 in the United States and "enka" music is one kind of traditional music in 8 Each culture has its own special instruments for 9 its traditional music. In some places, traditional music is also referred to as " 10 music". The third kind is rock music. Rock is generally a 11 kind of music and it is played with a strong 12 Rock musicians often use 13 instruments, such as electric guitars and electric pianos. Beginning in 14 about 60 or 80 years ago, rock music became very popular, especially among 15 people, during the 1960"s and 1970"s. Today, rock music still remains a 16 of the younger generation. The fourth kind of music is jazz. Jazz music is said to have originated in 17 It has a different kind of 18 from other kinds of music. A variety of musical instruments are used to play jazz music, such as the trumpet, the saxophone and the piano, as well as 19 instruments. You may find that many kinds of music nowadays are 20 of classical and traditional, or classical and jazz, or rock and jazz, and so on.