【文章內(nèi)容簡(jiǎn)介】 esWhy does cream go bad faster than butter? Some researchers think they have the answer, and it es down to the structure of the food, not its chemical position—a finding that could help rid some processed foods of chemical and butter contain pretty much the same substances, so why cream should sour much faster has been a are emulsions—tiny globules(小球體)of one liquid evenly distributed throughout difference lies in what’s in the globules and what’s in the surrounding liquid, says Brocklehurst, who led the cream, fatty globules drift about in a sea of butter, globules of a watery solution are locked away in a sea of bacteria which make the food go bad prefer to live in the watery regions of the mixture.“This means that in cream, the bacteria are free to grow throughout the mixture,” he the situation is reversed, the bacteria are locked away in partments(隔倉(cāng)室)buried deep in the sea of in this way, individual colonies cannot spread and rapidly run out of nutrients(養(yǎng)料).They also slowly poison themselves with their waste products.“In butter, you get a selflimiting system which stops the bacteria growing,” says researchers are already working with food panies keen to see if their products can be made resistant to bacterial attack through alterations to the food’s believes it will be possible to make the emulsions used in salad cream, for instance, more like that in key will be to do this while keeping the salad cream liquid and not turning it into a solid significance of Brocklehurst’s research is that it suggested a way to keep some foods fresh without preservatives B it discovered tiny globules in both cream and butter C it revealed the secret of how bacteria multiply in cream and butter D it found that cream and butter share the same chemical position 正確答案：A to the researchers, cream sours fast than butter because bacteria are more evenly distributed in cream B multiply more easily in cream than in butter C live on less fat in cream than in butter D produce less waste in cream than in butter 正確答案：B to Brocklehurst, we can keep cream fresh by removing its fat B killing the bacteria C reducing its water content D altering its structure 正確答案：D word “colonies”(Line 2, )refers to tiny globules B watery regions C bacteria munities D little partments 正確答案：C application of the research finding will be possible if salad cream can be made resistant to bacterial attack by varying its chemical position B by turning it into a solid lump C while keeping its structure unchanged D while retaining its liquid form 正確答案：D第2題（5分）Material cuMaterial culture refers to what can be seen, held, felt, used—what a culture a culture’s tools and technology can tell us about the group’s history and way of , research into the material culture of music can help us to understand the music most vivid body of material culture in it, of course, is musical 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 we have two kinds of evidence: instruments well preserved and instruments pictured in 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 music or printed music, too, is material 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 versions limit variety because they tend to standardize any song, yet they stimulate people to create new and different , the ability to read music notation has a farreaching effect on music and, when it bees widespread, on the music culture as a 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 puters and other is all part of the “information revolution”, a twentiethcentury phenomenon as important as the industrial revolution was in the electronic media are not just limited to modern nations。they have affected music cultures all over the into the material culture of a nation is of great importance because 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 正確答案：C can be learned from this passage that 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 正確答案：B to the author, music notation is important because it has a great effect on the music culture as more and more people are able to read it B it tends to standardize folk songs when it is used by folk musicians C it is the printed version of standardized folk music D it encourages people to popularize printed versions of songs 正確答案：A can be concluded from the passage that the introduction of electronic media into the world of music has brought about an information revolution B has speeded up the appearance of a new generation of puters C has given rise to new forms of music culture D has led to the transformation of traditional musical instruments 正確答案：C of the following best summarizes the main idea of the passage?A Musical instruments developed th