[外语类试卷]雅思（阅读）模拟试卷81及答案与解析.doc

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1、雅思（阅读）模拟试卷 81及答案与解析 0 You should spend about 20 minutes on Questions 1-13, which are based on Reading Passage 1 below. A song on the brain Some songs just wont leave you alone. But this may give us clues about how our brain works. A Everyone knows the situation where you cant get a song out of your

2、head. You hear a pop song on the radio or even just read the songs title and it haunts you for hours, playing over and over in your mind until youre heartily sick of it. The condition now even has a medical name song-in-head syndrome. B But why does the mind annoy us like this? No one knows for sure

3、, but its probably because the brain is better at holding onto information than it is at knowing what information is important. Roger Chaffin, a psychologist at the University of Connecticut says, Its a manifestation of an aspect of memory which is normally an asset to us, but in this instance it ca

4、n be a nuisance. C This eager acquisitiveness of the brain may have helped our ancestors remember important information in the past. Today, students use it to learn new material, and musicians rely on it to memorise complicated pieces. But when this useful function goes awry it can get you stuck on

5、a tune. Unfortunately, superficial, repetitive pop tunes are, by their very nature, more likely to stick than something more inventive. D The annoying playback probably originates in the auditory cortex. Located at the front of the brain, this region handles both listening and playback of music and

6、other sounds. Neuroscientist Robert Zatorre of McGill University in Montreal proved this some years ago when he asked volunteers to replay the theme from the TV show Dallas in their heads. Brain imaging studies showed that this activated the same region of the auditory cortex as when the people actu

7、ally heard the song. E Not every stored musical memory emerges into consciousness, however. The frontal lobe of the brain gets to decide which thoughts become conscious and which ones are simply stored away. But it can become fatigued or depressed, which is when people most commonly suffer from song

8、-in-head syndrome and other intrusive thoughts, says Susan Ball, a clinical psychologist at Indiana University School of Medicine in Indianapolis. And once the unwanted song surfaces, its hard to stuff it back down into the subconscious. The more you try to suppress a thought, the more you get it, s

9、ays Ball. We call this the pink elephant phenomenon. Tell the brain not to think about pink elephants, and its guaranteed to do so, she says. F For those not severely afflicted, simply avoiding certain kinds of music can help. I know certain pieces that are kind of “sticky“ to me, so I will not play

10、 them in the early morning for fear that they will run around in my head all day, says Steven Brown, who trained as a classical pianist but is now a neuroscientist at the University of Texas Health Science Center at San Antonio. He says he always has a song in his head and, even more annoying, his m

11、ind never seems to make it all the way through. It tends to involve short fragments between, say, 5 or 15 seconds. They seem to get looped, for hours sometimes, he says. G Browns experience of repeated musical loops may represent a phenomenon called chunking, in which people remember musical phrases

12、 as a single unit of memory, says Caroline Palmer, a psychologist at Ohio State University in Columbus. Most listeners have little choice about what chunks they remember. Particular chunks may be especially sticky if you hear them often or if they follow certain predictable patterns, such as the chord progression of rock either order)D throughout text especially Paragraph 9 40 【正确答案】 D