Practice Listening

Cám ơn Maroon nhé. Theo tớ thì khi Maroon post bài lên các bạn không nên type ngay trên website mà nên type bằng Word. Cũng đừng post bài ngay mà nên nghe đi nghe lại nhiều lần. Có nhiều chỗ chúng ta không thể nghe được ngay lần đầu nhưng sau một hai lần nghe thì lại nghe được. Nếu nghe kỹ các bạn cũng sẽ phân biệt được cho nào là "s" hay "ed". Các bạn cũng đừng dựa trên bài các bạn đã post trước để type tiếp mà nên tự mình type sau đó mới dựa vào các bài trước đó để check hoặc e***. Theo Chipe thì từ việc nghe hiểu đến type đúng được cũng là một vấn đề.
Bạn Maroon đã khuyến mại cho mấy cái tên riêng, các bạn đã post bài nên nghe lại để điền thêm.
Chipe có mấy lời góp ý như thế, mong mọi người tiếp tục ủng hộ và tích cực post bài để chúng ta cùng tiến bộ.
BTW, bác Maroon khuyến mãi nốt 2 từ "sơvia" & "scou" đi bác. Em nghi mãi không ra được cái spelling.

Hai từ mà bạn chipe nói vô cùng quen thuộc, Maroon bảo đảm các bạn ai cũng biết nhưng vì ít gặp nên các bạn chưa nghe ra.
Thôi thì khuyến mãi lun nha: Đó là severe và skull
Thực ra thì trong lúc nghe mình cũng phải đoán nữa; như với từ skull, ngay trước đó bài viết nói là ''from the top of the head'', trước đó nữa thì đang đề cập đến ''bone'', như vậy thì chắc chắn đó là ''xương sọ'' rùi.

Mọi người không nghe bổ sung tiếp sao? Nếu vậy thì đến thứ 2 Maroon sẽ e*** toàn bộ bài này và post bài nghe mới.
Have fun!

Hình như tại nóng quá nên mọi người cũng ngại onl hon Maroon ah. Đừng buồn nhá.

I?Tm Faith Lapidus with the VOA special English health report . Ludwig Van Beethoven is remembered as one of the most famous composers in history. He wrote some of the world greatest classical music. Beethoven lived only 57 years , he died in 1827. Recently, tests confirmed that Beethoven died of severe lead poisoning. The United States Department of Energy''''s Argonne National Laboratory supervised the testing. Bill Walsh directed the Beethoven research project. He is the chief scientist at Pfeiffer Treatment Center in Warrenville Illinois. Mr Walsh and his team examined in pieces of bone belonging to Beethoven, they found a lot amount of lead in the pieces or bone fragments. They said the lead levels would equal to those found in pieces of his hair in earlier studies. Genetic tests confirmed the bone fragments and hair came from Beethoven. The researchers also examined in bone fragments from someone else, who lived during the same period. Both were from the top of the head or skull. The fragments from Beethoven had more lead than those from the other person. The study found no measurable levels of ??? or mercury in the fragments from Beethoven''''''''''''''''s skull. Both elements have been thought to be possible causes of his health problems. Beethoven was sick for much of his life. He experienced stomach problems and a change of personality when he was around 20 years old. He also was easily angry and suffered from depression and hearing loss. His health problems became worse as Beethoven grew older. Mr Wash said severe stomach pain is the sign of lead poisoning. He said the lead levels found in Beethoven?Ts skull suggests the metal may have been present in his body for many years. Mr Wash said there is no strong evidence that lead poisoning was the cause of Beethoven?Ts hearing lost or deafness. He said there have been recognized cases of deafness caused by lead poisoning but he said it is very rare. Ludwig Van Beethoven visited many doctors throughout his life to find a curer for his health problems. Beethoven wrote a letter to a friend before he died. He urged researchers to examine in his body after he died so that other people would not have *****ffer as he did. This VOA special health report was written by Lawan Davis. This is Faith Lapidus
Chipe đã bổ sung thêm một số chỗ còn thiếu để ủng hộ Maroon. Bài hoàn chỉnh thì nhờ Maroon e*** cho moi người nhé.

A few missed words (in bold letters).
Iâ?Tm Faith Lapidus with the VOA special English health report . Ludwig Van Beethoven is remembered as one of the most famous composers in history. He wrote some of the world''s greatest classical music. Beethoven lived only 57 years. He died in 1827. Recently, tests confirmed that Beethoven died of severe lead poisoning. The United States Department of Energy''s Argonne National Laboratory supervised the testing. Bill Walsh directed the Beethoven research project. He is the chief scientist at Pfeiffer Treatment Center in Warrenville Illinois. Mr Walsh and his team examined in pieces of bone belonging to Beethoven. They found a large amount of lead in the pieces or bone fragments. They said the lead levels were equal to those found in pieces of his hair in earlier studies. Genetic tests confirmed the bone fragments and hair came from Beethoven. The researchers also examined in bone fragments from someone else, who lived during the same period. Both were from the top of the head or skull. The fragments from Beethoven had more lead than those from the other person. The study found no measurable levels of cadmium or mercury in the fragments from Beethoven''s skull. Both elements have been thought to be possible causes of his health problems. Beethoven was sick for much of his life. He experienced stomach problems and a change of personality when he was around 20 years old. He also was easily angered and suffered from depression and hearing loss. His health problems became worse as Beethoven grew older. Mr Wash said severe stomach pain is the sign of lead poisoning. He said the lead levels found in Beethovenâ?Ts skull suggest the metals may have been present in his body for many years. Mr Wash said there is no strong evidence that lead poisoning was the cause of Beethovenâ?Ts hearing loss or deafness. He said there have been recognized cases of deafness caused by lead poisoning but he said this is very rare. Ludwig Van Beethoven visited many doctors throughout his life to find a cure for his health problems. Beethoven wrote a letter to a friend before he died. He urged researchers to examine in his body after he died so that other people would not have *****ffer as he did. This VOA special English health report was written by Lawan Davis. This is Faith Lapidus

Vì bài này đã hoàn tất nên Maroon sẽ tổng kết lun.
E*** từ bài của hbae787
I?Tm Faith Lapidus with the VOA special English health report .
Ludwig Van Beethoven is remembered as one of the most famous composers in history. He wrote some of the world''''s greatest classical music. Beethoven lived only 57 years. He died in 1827.
Recently, tests confirmed that Beethoven died of severe lead poisoning. The United States Department of Energy''''s Argonne National Laboratory supervised the testing. Bill Walsh directed the Beethoven research project. He is the chief scientist at Pfeiffer Treatment Center in Warrenville, Illinois.
Mr Walsh and his team examined pieces of bone belonging to Beethoven. They found a large amount of lead in the pieces, or bone fragments. They said the lead levels were equal to those found in pieces of his hair in earlier studies.
Genetic tests confirmed the bone fragments and hair came from Beethoven. The researchers also examined bone fragments from someone else who lived during the same period. Both were from the top of the head, or skull. The fragments from Beethoven had more lead than those from the other person.
The study found no measurable levels of cadmium or mercury in the fragments from Beethoven''''s skull. Both elements had been thought to be possible causes of his health problems.
Beethoven was sick for much of his life. He experienced stomach problems and a change of personality when he was around 20 years old. He also was easily angered, and suffered from depression and hearing loss. His health problems became worse as Beethoven grew older.
Mr Walsh says severe stomach pain is the sign of lead poisoning. He said the lead levels found in Beethoven?Ts skull suggest the metals (kg có s) may have been present in his body for many years.
Mr Walsh said there is no strong evidence that lead poisoning was a cause of Beethoven?Ts hearing loss or deafness. He said there have been recognized cases of deafness caused by lead poisoning. But he said this is very rare.
Ludwig Van Beethoven visited many doctors throughout his life to find a cure for his health problems. Beethoven wrote a letter to a friend before he died. He urged researchers to examine in his body after he died so that other people would not have *****ffer as he did.
This VOA special English health report was written by Lawan Davis. This is Faith Lapidus

*****​

Các bạn thấy bài nghe này thế nào? Rất dễ phải kg? Tiếp theo đây là một bài viết về khoa học kỹ thuật. Hy vọng những bài mà Maroon chọn vừa giúp ích về kỹ năng nghe cũng như về kiến thức cho mọi người.
Nanotechnology: How the Science of the Very Small Is Getting Very Big
Một số tên riêng xuất hiện trong bài:
Steve Ember
Faith Lapidus
Richard Feynman
Gerd Binnig
Heinrich Rohrer
Robert Curl
Harold Kroto
Richard Smalley
Mario Ritter
Được Maroon_Opal sửa chữa / chuyển vào 23:55 ngày 09/06/2006

Iõ?Tm Steve Ember and Iõ?Tm Faith Lapidus with exploration in VOA special English. Today we tell about one of the most important research fields in technology. Itõ?Ts called nanotechnology. Itõ?Ts a science of making things un-imaginariness small but there is nothing small about the problems that scientists hope nanotechnology will solve.
Nanotechnology gets its name from a measure of distances. A nanometer or nano is 1/1000 mil of a meter. This is about the size of atoms and molecules. Nanotechnology work with materials this small. Many experts cre*** the idea to ??? ??? . In 1959, this Nobel Prize winner gave a speech. He called it õ?othe plenty of room at the bottomõ?. ??? discussed the ??? that scientists could make devices smaller and smaller, all the way down to the atomic level. Although he did not use the word nanotechnology, the speech got many scientists thinking about the word of the very small, but for years this idea remained only a ??? After time no way existed to record structure the size of molecules, not even electro microscope could do the job. But as the 1980s began, 2 researches found the way. Gerd Bennig and Heinrich Rohrer worked as laboratories in Zurich Switzerland. They worked for IBM, the American company international business machine. They invented what they called a scanning ??? microscope. This ??? scientist to observe molecules and even atoms in great detail than ever before. Once they can see the nano size structure the next step for scientists was to find the way to create their own. By the middle 1980s, scientists had increased their research on cobalt. They were interested in the ability to use this cobalt element to make nano size structure. Cobalt had already been engineered in chemical reaction to make long ??? cobalt chains. Today the result of cobalt chemical engineering is everywhere in the form of plastic. Scientists in the 1980s wanted to create nano structure from cobalt atom. In 1985, Robert Curl, Harold Kroto and Richard Smalley succeeded. They aimed a laser at cobalt. This powerful light caused some of the cobalt to become a ???. The scientists cooled the ??? to a stream low temperature. Then they looked at the cobalt material that remain. They found among several kinds of cobalt a molecule of 60 atoms Cobalt 60. Cobalt 60 is a group of tightly connected cobalt atoms that forms a ball. Itõ?Ts a very strong structure, this is because all the atoms share any loose electron that might take part in chemical reaction with other atoms. This kind of molecule cobalt can also appear with different number of cobalt atoms. There is also cobalt 70 for example. For their work Robert Curl, Harold Kroto and Richard Smalley received the Nobel prize in chemistry in 1996. Music õ?Ư
Bài này dài quĂ nên minh nghe tỏĂm 5 phút 'ỏĐu, phỏĐn sau sỏẵ nghe tiỏp.
Mong cĂc bỏĂn tiỏp tỏằƠc

Iõ?Tm Steve Ember and Iõ?Tm Faith Lapidus with exploration in VOA special English. Today we tell about one of the most important research fields in technology. Itõ?Ts called nanotechnology. Itõ?Ts the science of making things unimaginably small. But there is nothing small about the problems that scientists hope nanotechnology will solve.
Nanotechnology gets its name from a measure of distance. A nanometer, or nano is one thousand millionth of a meter. This is about the size of atoms and molecules. Nanotechnologies work with the theory this small. Many experts cre*** the ideal to õ?Ư with Richard Feynman. In 1959 this Nobel Prize winner gave a speech. He called it the plenty of room at the bottom. Dr Feynman discussed the theory that scientists could make devices smaller and smaller all the way down to the atomic level. Although he did not use the word nanotechnology the speech got many scientists thinking about the world of the very small. But for years this ideal remained only a theory.
At that time no way existed to record structures the size of molecule not even a electron microscope could do the job. But at the 1980s began two researchers found the way Gerd Binnig and Heinrich Rohrer worked at a laboratory in Zurich Switzerland. They worked for IBM, the American company international business machine. They invented what they called a scanning tunering microscope. This permitted scientists to observe molecules and even atoms in greater detail than ever before.
Once they can see nano size structures the next step for scientists was to find the way to create their own. By the middle of the 1980s, scientists had increased their research on carbon. They was interested in the ability to use this common element to make nano - size structures. Carbon had already been engineered in chemical reaction to make long hungry carbon chains. Today the result of carbon chemical engineering is every where in the form of plastic. Scientist in 1980s wanted to created nano structures from carbon atoms. In 1985, Robert Curl, Harold Kroto and Richard Smalley succeeded. They ended a laser at carbon. This powerful light caused some of the carbons to become a gas. The scientist cooled the gas to become extremmely low temperature. Then they looked at the carbon meterial that remain. They found among several kinds of carbon a molecule of sixty atoms carbon sixty.
Carbon sixty is a group of tightly connected carbon atoms that form a ball. It is a very strong structure. This is because all the atoms share any loosed electron that might take part in chemical reactions with other atoms. This kind of molecular carbon can also appear with different numbers of carbon atoms. There is also carbon 70 for example. For their work, Robart Curl, Harold Kroto and Richard Smalley received the Nobel Prize in chemistry in 1996.
The next nano structure development came in 1993, Japanese scientist Sumio Ezema of the company NEC developed carbon nanotubes. This nano sized objects are really six sized atomic structures connected to form a tube. They are extremely strong. Scientists believe that some day nanotubes could replace carbon phrase now used to airplant park. Soon after this discorvery researchers started to think about using nano tubes to build the extremmely small devices. In 2003 IBM announced that it made the world smallest light. Reseacher used the carbon nano tube attack to a silical deck. They send opposing electricalõ?Ư along the tube. The reaction between the õ?Ư partical produced an extremmely slow amount of light. IBM said the wave length of light produced could be used in communication.
Nanotube appeared to have many different usages. Scientists at university of Texas at Doughless have developed the way to make a flash material for film out of nanotubes. Researcher created a surper thin film by a chemically growing nano tubes on a piece of glass. They use another piece of sticky material to remove the film of nano tubes from the glass. When the film is finished it is only 50 nanometer thick. That is about 1/1000 the width of human hair. The material is extremmely strong and it carries electricity as well. Reseachers think the nano tube material could be use to make car window that can receive radio signals. They also believe it could be used to make solar electricity cells, lights or thin movable displays their show pictures like television.
Nano materials are already being used in some products. For example material using mix to the nano materials are being used to make sporting gurts like tennis balls and tennis rackets better. Soon nano material could be used to improve devices that reduce polution released by car. Similar technology could be used to one of a present of poisonned molecule in the air.
Computer scientists hope developments in the nanotechnology will help break barriers of sights and speeds. In 1965, electronic expert Golden Moor recognized that computer chips, the engine that drive computers with quickly grow impower. He even thought of a way to measure this progress. He said researchers with double the number of tiny transitor on a computer chip about every tube here. A transitor is a device that control electro concurence. That statement is known as Moorõ?Ts law. It have proved correct for more than forty years. Mr Moor was go on to help start the company intel one of the world leading computer chip makers. And Moorõ?Ts law is one of the most talked-about scientific barrier.
In 1971 intel created a computer chip cotaining 2300 transistors. In 2004 intel made a chip with 592 million transistors but common technology have reached its limit. The next jumpe to 1000 million transistors was required new discovery in nano technology. Researchers are trying to solve the problems of creating nano sized transistors. In 2002, IBM annouced that it has created the world smallest transistor based on the elemen silical. IBM said that the transistor was 4 to 8 nanometerd. In 2005 with researchers for the company õ?Ư wrote about a problem of creating nano transitors in a magazine scientific american. They said transitors are often measured by the distance between the meter of two common wire. Their nano wire transitor measure 30 nanometer inside. They said that smaller transitors commonly used in computer is 90 nanometer. But making nanometer transitor small enough to meet the demand of Moorõ?Ts law may be years in the future.
Although nano technology is exciting there are concerns about the safety of tube small structure. Scientists and environmental activists worry that nano material could part into the air and water causing health problem. There is reason for concern. A study by nasa researcher found that nano partical cause severe long dammage to laboratory minds. Other study suggest that nano partical could surpress the grow of õ?Ư group or could even harm the human bodyõ?Ts ability to fight infection.
The environment protection agency said there is not much known about the effects of nanostructures in the invironment. This is because the laws of physics do not work in the same way as the level of the extremmely small. The EPA recognized that this could mean that there are unknown health risk involve in nano technology. The government expected to expand about 39 million dolars on research men to investigate the health risk of the nano material but that is last than 4% of total government expanding which was beginning with million dolar this year. Many environmental groups say at least 10% of that totalõ?Ư
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Tui nghe xong thi cha hieu minh da nghe dc cai gi nua. Mong bac Maroon va cac bac sua dum nhe. Thanks nhieu.

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