高级口译0703听力原文汇总合集（2）

2010-09-07 00:00:00来源：网络

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　　备战口译：原创双语时事汇总
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　　高级口译0703听力原文汇总合集（2）

　　Q1-5

　　M: Teenagers, when allowed to, sleep nearly nine and half hours every night, as much as young children. But unlike young children, even when teens do get their full sleep, they still have waves of sleepiness in the daytime and then surges of energies in the evening, make them wild awake late at the night, but not for the reasons most of us assume.

　　W: We kind of always thought that adolescents stayed up late because they like to, and because there’s plenty of things to do.

　　M: But there’s also a big push from biology that makes teenagers such night owls. It’s comes from the mighty sleep hormone—Melatonin.

　　W: Melatonin is a wonderfully simple signal that turns on in the evening. You’re getting sleepy. And it turns off in the morning.

　　M: And you are awaken. During adolescence, Melatonin isn’t secreted until around 11 p.m., several hours later than it is in childhood. So a typical teenager doesn’t even get sleepy until that Melatonin surgesignals the brain that it’s night. Now matter how early the teen goes to bed. And the Melatonin doesn’t shut up until 9 hours later, around 8 a.m. But of course, most high schools start around 7:30. The result is all too evident. A teenager’s body may be in the classroom, but his brain is still asleep on the pillow.

　　W: One student says, “I’ll wake up, and I’ll just feel miserable!”

　　M: An adolescent, and particularly the adolescent in high school, is almost bound to get severely sleep-deprived.

　　W: I know a scientist, that’s William DeMint of Stanford University. Bill DeMint is Doctor Sleep, captivated by the mystery of sleep for decades, creating the specialty of sleep medicine.

　　M: He’s been accepting every invitation that he gets to speak to high school students. So he goes to a high school, and it’ll be 10:30 in the morning or 2 o’clock in the afternoon. Whenever it is, several hundred students in an auditorium, and he’ll just watch them as he’s talking.

　　W: Doing a little spontaneous field research.

　　M: And after 10 minutes of sitting, particularly as the lights are dim, almost without exception, they are all struggling to stay awake. 10 minutes!

　　W: This shows up in lab studies, too. The typical teenager, when monitored in a quiet environment during morning hours, will fall asleep in less than three and half minutes.

　　M: It’s just like magic! It’s like somebody turned on some kind of gas in the auditorium. And they all looked gassed.

　　W: Not gassed. Just severely sleep-deprived, short of about 2 hours of sleep every school night. Accumulation into what DeMint calls “sleep debt”. An estimated 85% of high school students are chronically sleep-deprived, unable to stay fully awake throughout the school day. And it’s not just following a sleeping class.It’s also riding a bike, playing sports, using tools, driving. A high school student hit a tree one night when he was driving.

　　M: Is it true?

　　W: Yes! He told me he fell asleep for a couple of seconds. And the next thing he knew, he hit a tree!

　　M: You can have a second when your eyelid blinks, and you’re not taking information or making judgment.

　　W: That occurs when you’re at the wheel. You travel 60 feet in that second. The report was that if he would have hit 3 inches to the left, he would have probably been dead. You know, 3 inches could have changed everything.

　　M: Reaction time, alertness, concentration, all slow down by insufficient sleep. The Federal Department of Transportation estimates teenage drivers cost more than half of all fall-asleep crashes.

　　Question 1: What is the general topic of this conversation?

　　Question 2:What is Melatonin?

　　Question 3: Which of the following statements is true about Melatonin?

　　Question 4: According to the conversation, what problem do adolescents have in high school?

　　Question 5: Several things are mentioned in the conversation that are affected by insufficient sleep. Which of the following is NOT one of them?

　　本文选自新东方口译名师裴晓栋的blog,blog链接地址：http://blog.hjenglish.com/peixiaodong