Questions 62 to 66 are based on the following passage.

　　Material culture refers to what can be seen, held, felt, used—what a culture produces. Examining a culture’s tools and technology can tell us about the group’s history and way of life. Similarly, research into the material culture of music can help us to understand the music culture. The most vivid body of material culture in it, of course, is musical instruments. We cannot hear for ourselves the actual sound of any musical performance before the 1870s when the phonograph was invented, so we rely on instruments for important information about music cultures in the remote past and their development. Here we have two kinds of evidence: instruments well preserved and instruments pictured in art. Through the study of instruments, as well as paintings, written documents, and so on, we can explore the movement of music from the Near East to China over a thousand years ago, or we can outline the spread of Near Eastern influence to Europe that resulted in the development of most of the instruments in the symphony orchestra.

　　Sheet music or printed music, too, is material culture. Scholars once defined folk music cultures as those in which people learn and sing music by ear rather than from print, but research shows mutual influence among oral and written sources during the past few centuries in Europe, Britain, and America. Printed versions limit variety because they tend to standardize any song, yet they stimulate people to create new and different songs. Besides, the ability to read music notation has a far-reaching effect on music and, when it becomes widespread, on the music culture as a whole.

　　One more important part of music’s material culture should be singled out: the influence of the electronic media—radio, record player, tape recorder, television, and videocassette, with the future promising talking and singing computers and other developments. This is all part of the "information revolution", a twentieth-century phenomenon as important as the industrial revolution was in the nineteenth. These electronic media are not just limited to modern nations; they have affected music cultures all over the globe.

　　62. Research into the material culture of a nation is of great importance because ________ .

　　[A] it helps produce new cultural tools and technology

　　[B] it can reflect the development of the nation

　　[C] it helps understand the nation’s past and present

　　[D] it can demonstrate the nation’s civilization

　　63. It can be learned from this passage that ________ .

　　[A] the existence of the symphony was attributed to the spread of Near Eastern and Chinese music

　　[B] Near Eastern music had an influence on the development of the instruments in the symphony orchestra

　　[C] the development of the symphony shows the mutual influence of Eastern and Western music

　　[D] the musical instruments in the symphony orchestra were developed on the basis of Near Eastern music